Report of the Committee on Water Extinguishing …WES-3 VOTE STATEMENT The report of the Committee...

WES-1 C O M M I T T E E P E I I S O N N E L

Report of the Committee on Water Extinguishing Systems

Correlating C o m m i t t e e

P a u l D. S m i t h , Chairman Gage-Babcock & Associates, Inc.

1440 Broadway, Oakland, CA 94612

R o b e r t M. t I odne t t , ~ Secretary National Fire Protection Association

470 Atlantic Avenue, Boston, MA 02210

K e n n e t h J . Car l , Standpipes & Outside Protection Sectional Committee

R o b e r t H. Merz , Water Tanks Sectional Committee

C h a r l e s B. Mil ler , Fire Pumps Sectional Committee

C h e s t e r W. S c h i r m e r , Automatic Sprinklers Sectional Committee

J . S a m u e l Slicer, Public \Vater Supplies for Private Fire Protection Sectional Com-

. mittee

T. A. Ven t rone , Foam-\Vater Sprinklers Sectional Committee

J. J . Walker , Water Spray Fixed Systems Sectional Committee

~Nonvo~ng.

Sect ional C o m m i t t e e on Fire P u m p s

C h a r l e s B. Mil ler , Chairman 4288 Stratford Road, Youngstown, OH 44512

N o r m a n E. G a t s c h , J r . , Secretary Insurance Services Office of Ohio

P.O. Box 1290, Columbus, OH 43216

T. J . Brown, Factory Mutual Research Cor- poration

W. Carey , Underwriters Laboratories Inc. R o b e r t C. Ca r t e r , Stone & Webster Engi-

neering Corporation S. P. Crosby, West Georgetown, ME W a l t e r A. D a m o n , Illinois Fire Prevention

Association�9 S. K, Goodwin , Industrial Risk Insurers Dona ld D. H e n d e r e r , Engine Manufac-

turers Association George W. H orne r , National Electrical

Manufacturers Association Dona ld L. J o h n s o n , American Mutual In-

surance Alliance J . D. J enson , N F P A Industrial Fire Pro-

teetion Section

R. E. K u m m e r , Hydraulic Institute R a y m o n d Koss, Port Authority of New

York and New Jersey J a m e s W. Nolan , James W. Nolan Company Gera ld W. O ' R o u r k e , Schirmer Engineer-

ing Corporation M a r i o n J . P a t e r s o n , San Diego, CA R i c h a r d J a m e s Rosleky, Fred S . . l ames

& Company W i l l i a m L. S te l te r , Master Control Sys-

tems, Inc. W i l l i a m Tes ta , National Automatic S'prin-

kler and Fire Control Association R. J . W i l l i a m s , National Water Well As-

sociation R. J . W r i g h t , Underwriters' Laboratories of

Canada

C O M M I T T E E ON \ V A T E R E X T I N G U I S H I N G S Y S T E M S WES-2

Al t e rna t e s

J o h n R. Anderson , Insurance Services Office (Alternate to N. E. Gatsch)

M. E. Cox, Underwriters I~aboratories Inc. (Alternate to W. Carey)

R. D. Elder, Aurora Pump (Alternate to R. E. Kummer)

M a n u e l J. DeLerno , Illinois Fire Preven- tion Association (Alternate to W. A. Damon)

J o h n Gerdels , Underwriters' Laboratories of Canada (Alternate to R. J. Wright)

Paul Kah lenbeck , Cummins Engine Co., lnc. (Alternate to D. D. Henderer)

Roland Russo , National Electrical Manu- facturers Association (Alternate to G. W. Horner)

W i l l i a m F. S c h a c h t , Industrial Risk In- surers (Alternate to ~. K. Goodwin)

W. E. S i m m o n s , American Mutual Insur- ance Alliance (Alternate to D. L. Johnson)

Sect ional C o m m i t t e e on Standpipes and Outside Protect ion

K e n n e t h J . Carl , Chairman Public Protection Grading, Insurance Services Office

160 Water Street, New York, NY 10038

R i c h a r d H. C h a m b e r l a i n , Secretary Fire Protection Engineering, Rowell and Associates

North Star Building, Northern Lights Circle, North Syracuse, NY 13212

Wil l i s C. Beard, National Association of Fire Equipment Distributors, Inc.

G r a h a m Clarke , Factory Mutual Research Corporation

J o s e p h G. Cou tu , Industrial Risk Insurers Chief Rober t Ely, California Fire Chiefs

Association E. E. Hindere r , Caterpillar Tractor Com-

pany T. C. Jes ter , Manufacturers Standardiza-

tion Society of the Valve & Fitting In- dustry

K e r r y B. Keen , Memphis Fire Department~ Bruno Joseph Lukes , Canadian Auto-

rustic Sprinkler Association Allan R. M a r s h a l l , Badger-Powhatan

Company R icha rd M a r t i n e a u , National Automatic

Sprinkler and Fire Control Association M u r v a n M. Maxwell , American. Institute

of Architects G u i d o Moccio, Fire Marshals Association

of North America ' J a m e s W. Nolan , James W. Nolan Co.

Wi l l i am D. Nesbe i t t , Uni-Bell Plastic Pipe Association

C o m m i s s i o n e r J o h n O ' H a ~ a n , New York City Fire Department

J o h n E. P l a n t i n g s , Meyer, Strong & Jones D a v i d O. Rogers , Alexander and Alexander P e t e r K. S c h o n t a g , NFPA Industrial Fire

Protection Section Wli la rd R. Seipt , Asbestos Cement Pipe

Products Association Ray A. S i m p s o n , Maryland Fire & Rescue

Insti tute W. H a r r y S m i t h , Cast Iron Pipe Research

Association Miles S u c h o m e l , Underwriters Laboratories

inc. W i l l i a m S tan ley T h o m p s o n , Fire Equip-

ment Manufacturers Association W i l l i a m T. T r l n k e r , Mill Mutual Fire Pre-

vention Bureau Fred S. W i n t e r s , American Mutual Insur-

ance Alliance J o h n E. Woycheese , Standard Fire Protec-

tion Company J. Mi l ton W r i g h t , Naples, FL Pe t e r Y u r k o n i s , Rolf Jensen & Associates,

"Inc. J o s e p h A. Zot t , Johnson & Higgins

A l t e r n a t e s

W'. Carey, Underwriters Laboratories Inc'. (Alternate to M. Suchomel)

Russe l l P. F l e m i n g , National Automatic Sprinkler & Fire Control Assn. (Alternate to R. Martineau)

Robe r t Jo seph Ma dde n , Fire Equipment Manufacturers Assn. (Alternate to W. S. Thompson)

S tan ley W. Mul le r , American Institute of Architects (Alternate to M. M. Maxwell)

A. P. Sc t t t lne , NFPA Industrial Fire Pro- tection Section (Alternate to P. K. Schon- tag)

Eldon A. Steen, Industrial Risk Insurers (Alternate to J. G. Coutu)

H a r r y W e s t h a u s , Insurance Services Office (Alternate to K. J. Carl)

WES-3 VOTE STATEMENT

The report of the Committee on Water Extinguishing Systems is in three parts.

Par t I has been prepared by the Sectional Committee on Fire Pumps, and proposes for official adoption amendments to NFPA 20-1976, Standard for the Installation of Centrifugal Fire Pumps.

NFPA 20 is published in the 1977 National Fire Codes, Volume 2, and in separate pamphlet form.

Part I has been submitted to letter ballot of the Sectional Committee on Fire Pumps which consists .of 22 voting members, of whom ld have voted affirmatively, 3 negatively (Messrs. Damon, Nolan and Stelter), one has not voted (Mr. O'Rourke) and 4 have not returned ballots (Messrs. Crosby, Henderer, Rosicky and I'J"right).

Par t I has also been submitted to letter ballot of the Correlating Com- mittee which consists of 8 voting members, of whom all 8 have voted affirmatively.

Part II has been prepared by the Sectional Committee on Stand- pipes and Outside Protection, and proposes for official adoption amendments to N F ~ 9 7 3 , Recommendations for Fire Depart- ment Operations in P r o ~ s Protected by Sprinkler and Standpipe Systems. The document has been rewritten according to NFPA's Manual of Style and equivalent SI units have been added to the customary units. The substantive changes to the standard are indicated by a vertical line and these are the only parts that are open to public comment�9

NFPA 13E is published in the 1977 National Fire Codes, Volume 12, and in separate pamphlet form.

Part I I has been '- "" ~ to of the ~..,.~ Committee suutmtleu letter ballot 0 6 b b t e l l g ~

on Standpipes and Outside Protection which conszsts of ~ members, of whom a ~ h&,e voted affirmativeO, , . . . . . . . . ~;,,,/,' ~ ~n,~ not voted ~ " o ~ . . . . . . . 5 . . . . . ' - ~ , . ~ v ~ . . ~

(Messrs. Nesbeitt and Seipt) and 5 have not returned ballots (Messrs. El),, Marshall, O'Hagan, Simpson and Smith).

Part I I has also been submitted to letter ballot of the Correlating Com- mittee which consists of 8 voting members, of whom all 8 have voted affirmatively.

Part I I I has been prepared by the Sectional Committee on Stand- . pipes and Outside Protection and proposes for official adoption amendments to NFPA 14-1976, &andard for the Installation of Stand- pipe and Hose Systems.

COMMITTEE ON WATER EXTINGUISHING SYSTEMS W E N - 4

NFPA 14 is published in the 1977 National Fire Codes, Volume 2, and in separate pamphlet form.

Part I I ! has been submitted to letter ballot of the Sectional Committee on Standpipes and Outside Proteotion which consists of 30 voting members, of whom 21 have voted affirmatively, one has voted negatively (Mr. Yur- konis), 3 have not voted (Messrs. Clarke, Nesbeitt, and Seipt), and 5 have not returned ballots (Messrs. Ely, Marshall, O'Hagan, Simpson and Smith).

Par t I I I ha~ also been submitted to letter ballot of the Correlating Com- mittee which consists of 8 voting members, of whom 6 have voted q[firma- tire O, and 2 have voted negatively (Messrs. Schirmer and Slicer).

20-1 R E V I S I O N S T O N F P A 2 0

Part I

Revisions to the Standard for the Installation of

Centrifugal Fire Pumps

NFPA 2 0 - 1 9 7 6

I. Section I- I. Add a new sentence at the end to read as follows:

This standard does not contain system water supply capacity and pressure requirements. (See A-2- 1.1.)

2. Section 1-2. Revise to read as follows:

1-2 Purpose . The purpose of this standard is to provide a reasonable degree of protection for life and property from fire through installation requirements for centrifugal fire pumps based upon sound engineering principles, test data and field experience. I t includes single stage and multi-stage pumps of horizontal or vertical shaft design and the proper selection, coordination, as- sembly, installation and maintenance of these pumps, pump drivers and associated equipment. The standard endeavors to continue the excellent record t h a t has been established by centrifugal pump installations and meet the needs of changing' tech- nology.

3. Section I-4. 1. In the fourth line after "approved" add "by the authority having jurisdiction."

d. Section 1-d. 3. Renumber section I-6. l as 1-4.3 to read as follows:

1-4.3 Prior to shipment of new equipment or alteration of existing equipment, a complete plan and detailed data describing pump, driver, controller, power supply, fittings, suction and discharge connections, and water supply conditions shall be prepared by the engineer or contractor for approval.

5. Section 7-5. 1. In the first line after "purchased" add " f rom the pump manufacturer" and at the end add "(For replacement components see Chapter 12)."

C O M M I T T E E O N W A T E R E X T I N G U I S H I N G S Y S T E M S 2 0 - - 2

6. Section ?-6. Delete 1-6 and 1-6. 1 and renumber and revise 1-6.2 as I -6 to read as follows:

1-6 Certified Shop Test. Certified shop test curves shok~ing head-capacity, efficiency, and brake-horsepower of the pump shall be furnished by the manufacturer.

7. Section l-& 1.2. "Revise to read as follows:

1'-8.1.2 Isolating M e a n s is a switch intended for isolating an electric circuit from its source of power.

8. Section 1-8. 1.3. Change the third word "means" to "is."

9. Section 1-8.2. Revise as follows: Establish a new subheading "1-8.2 Electric Motors . " Section 1-8.2 is renumbered 1-8.2. 1, but otherwise unchanged. Change successive section numbers 1-8.2. 1, 1-8.2.2, 1-8.2.5, 1-8.2.d, and 7-8.2.5 to numbers 1-8.2,2, 1-8.2.3, 1-8.2.4, /-8.2.5.

a n d / - 8 . 2 . 6 respectively.

10. Section .I-8.5. Change title from "Head and Velocity" t o " H e a d . " Change the section to the following:

1-8.5.1 Head . The unit for measuring head shall be the foot (metre). The relation between a pressure expressed in pounds per square inch (bars) and a pressure expressed in feet (metres) of head is:

Pressure in psi Head in Feet =

0.433

Pressure in bars Head in Metres =

0.098

1-8.5.2 Velocity H e a d (Symbol h,). The velocity head shall be figured from the average velocity (v), obtained by di- viding the flow in cubic feet per second (m3/s) by the actual area of pipe cross' section in square feet (m 2) and determined at the point of the gauge connection.

Velocity head is expressed by the formula:

V2 "

2g

Where g = the acceleration due to gravity and is 32.17 feet per second per second (9.807 m/s 2) at sea level "and 45 degrees latitude.

V = Velocity in the pipe in feet per second (m/s)

20-3 REVISIONS TO NFPA 20

1-8.5.3 Flooded Suction means water flowing from an atmospheric vented source to the pump without the average pressure at the pump inlet flange dropping below atmospheric pressure with the pump operating at 150 percent of its rated capacity.

1-8.5.4 Total Suction Lift (Symbol h~). Suction lift exists where the total suction head is below atmospheric pressure. Total suctiem lift, as determined on test, is the reading of a liquid ma- nometer at the suction nozzle o f the pump, converted to feet of liquid, and referred to datum, minus the velocity head at the point of gauge attachment.

1-8.5.5 Total" Suction Head (Symbol hs). Suction head exists w h e n t h e total suction head is above atmospheric pressure. Total suction head, as determined on test, is the reading of a gauge at the suction of the pump converted to feet of liquid and referred to datum, plus the velocity head at the point of gauge attachment.

1o8.5.6 Total Discharge Head (Symbol hd). Total discharge head is the refiding of a pressure gauge at the discharge of the .pump, converted to feet of liquid and referred to datum plus the velocity head at the point of gauge attachment.

-1-8.5.7 Total Head (Symbol H), Horizontal Pumps. Total head is the measure of the work increase per pound (kg) of liquid, imparted to the liquid by th~ :pump, and is therefore the algebraic difference between the total discharge head and the total suction head. Total head as determined on test where suction l if t exists is the sum of the total;discharge head and total suction lift. Where positive suction head exists, the total head is the total discharge head minus the total suction head.

1-8.5.8 Total Head (Symbol H), Vertical Turbine Pumps. Total head is the distance from the water level to the center of the discharge gauge, plus the discharge pressure gauge reading measure just beyond the discharge elbow and referred to datum, plus the velocity head at point of gauge attachment.

1-8.5.9' Total Rated Head means the total head, defined above, developed at rated capacity for either a horizontal split- case or a vertical shaft turbine-type pump.

1-8.5.10 Net Positive Suction Head - - NPSH (Symbol hsv). The net positive suction head is the total suction head in feet (metres) of liquid absolute determined at the suction nozzle and referred to datum less the vapor pressure of the liquid in feet (metres) absolute.

COMMITTEE ON WATER EXTINGUISHING SYSTEMS 20--4

11. Section 1-8. 7. Delete the present 1-8. 7 and revise as follows:

Renumber 1-8.8as 1-8.7 1-8.8. I as 1-8.7.1 l-~].8.2 as I-8.7.2 I-8.8.3 as 1-8.7.3 1-8.8.4 as 1-8.7.4 I-8.8.5 as 1-8.7.5 1-8.8. 6 as 1-8.7.6 (Change reference in the last line to 1-6'. 7.5.) 1-8.8.7 as 1-8.7.7.

12. Section 1-8.8. Add a new section to read as follows:

178.8 Additional Definitions. Additional applicable definitions may be found in the latest edition of Hydraulic Institute Standards for Centrifugal, Rotary and Reciprocating Pumps. (See Appendix C.)

13. Section *2- 1.1. At the end add (See A-2- 1.1.). Section *2- 1.2. Revise and relocate *3-3.1 to read as Jollows:

"2-1.2 Sources. Any source of water that is adequate in quality a n d quantity may provide the supply for fire pumps.

�9 Where the water supply is from a public service main, pump operation shall not reduce the suction head, at the pump, below 20 psi (1.4 bars) or below the minimum pressure allowed by the local regulatory authority.

ld. Section: 2- 1.3. Renumber present 2- 1.2 as 2- 1.3.

15. Section *2- 1.4.- Renumber present *2- 1.3 as *2- I.d.


.~-x.J xnv tlcata avall~tule from a water sup y ~nad be .g- ured on the basis of a flow of 150 percent of rated capacity of the pump. This.head shall be as indicated by a flow test.

17. Section 2-3. 1. At the end of the pump capacity table, add one more pump 5000 G P M column - - 18 925 l /min column.

18. Section 2-4. Renumber present 2-5 as 2-4.

19. Section 2-5. Renumber present 2-6, 2-6. 1 and 2-6.2 as 2-5, 2-5. 1 and 2-5.2 respectively. In the exception to 2-5.2, add as follows:

"taking suction from a well or open wet pit."

20. Section 2-6. Renumber 2-7 as 2-6.


21. Section 2-7. Renumber 2-8, *2-8. 1, *2-8.2; 2-8.3, 2-8.4, 2-8.5, *2-8.6 and 2-8.7 as 2-7, *2-7. l, *2-7.2, 2-7..3, 2-7.4, 2-7.5, *2-7.6 and 2- 7.7 respectively.

21a. Section 2-8. Add a new 2-8 (a new section with 3 subsections re- arranged from 2-9) to read as follows:

2-8 Pipe and Fittings.

"2-8.1 Steel pipe slaall be used aboveground except for connection to underground suction and underground discharge piping. To prevent tuberculation suction pipe shall be galvanized or painted on the inside prior to installation, with a paint recommended for submerged surfaces. Thick bituminous linings shall not be used.

2-8.2 Sections of steel piping shall be joined by means of screwed, flanged (flanges welded to pipe are preferred), mechanical grooved joints or other approved fittings.

Exception: Slip-type fittings may be used when installed as required by 2 -9 .6 ( f ) and when the piping is mechanically secured to prevent slippage.

2-8.3 All provisions for welded pipe shall be in accordance with NFPA 13 (see Appendix C).

2-8.4 Torch cutting or welding shall not be permitted as a means of modifying or repairing pump house piping.

22. Section 2-9. Revise 2-9 to read as follows:

2-9 Suction P ipe and Fittings.

Renumber present 3-3.5. l(a) as 2-9. 1 and add in the second sentence "and tested" after "installed."

2-9.1 Suction pipe shall have a pressure rating not less than that of yard piping. I t shall be installed and tested in accordance with NFPA 24 (see Appendix C).

Renumber present 3-3.5. 1(c) as 2-9.2 and add "except aboveground" after "acceptable ," to read as follows:

2-9.2 Cement asbestos suction pipe shall be acceptable, except aboveground, when the pump takes suction under a positive head at all times.

Renumber 3-3.5.2 as 2-9.3 and delete "symmetr ical" and add "ar - ranged" to read as follows:

2-9.3 Mul t lp le Pumps . Where a single suction pipe supplies more than one pump, the suction piping layout at the pumps shall be arranged so that each pump will receive its proportional supply.

COMMITTEE ON VCATER EXTINGUISHING SYSTEMS 20--1)

Renumber 3-3.4 as 2-9.4 and revise as follows: 2-9.4 Suction Size. The size of the suction pipe for single

and /o r multiple pumps (arranged to operate simultaneously) shall be such that with all pumps operating at 150 percent of rated capacity the net positive suction head (NPSH) available at the pump suction flange shall be at least 19 feet (5.8 m) absolute for horizontal split-case and end suction pumps. The NPSH available shall be decreased 1 foot (0.305 m) for each 1000 feet "(305 m) above sea level a t the pump installation. The suction pipe size shall not be less than shown in Table 2-20.

Renumber present 3-3.5.4 as *2-9.5. Change " in" to "with" in title and at end change "(See Fig. A-3-3.5.4.)" to "(See Fig. A-2-9.5.)."

Renumber present * 3- 3. 5. 5 as *2- 9. 6 with the following changes: (a) Change "(See Fig. A-3-3.5.5.)" to "(See Fig. A-2-9.6.)." (c) Add "a horizontal split-ease" after "to ." ( f ) Change "(See Fig. A-3-4. 1.)" to "(See Fig. A-3-2. 1.)."

Renumber * 3- 3. 5. 6 as * 2- 9. 7 with "indicator-type" deleted.

Renumber 3-3.5.7 as 2-9.8. In the first line change "suction supply comes under a positive head" to "water supply is obtained" and at the end change "[See screen details in Fig. A-d-2.2.2(a).]" to "(See screen details in Fig. A-2-9.8.)."

Renumber 3-3.5.8 as 2-9.9. Change the Exception at the end of (a) to. read as follows: Exception." Except as specified in 2-9. 7.

Revise (b) to read as follows: (b) Suitable devices may be installed in the suction supply

piping or stored water supply and arranged to activate an alarm if the pump suction pressure or water level falls below a prede- termined minimum.

23. Section 2-10. Revise as follows:

Renumber 2-9 as 2-10.

Renumber 2-9. 1 as 2- 10. 1.

Renumber *2-9.2 as *2- 10.2 and rev#e second sentence by deleting "in the pump room or pump house" and adding "above ground."

Renumber 2-9.3 as 2-10.3 and change "Tab le 2-16" to "Table 2-20."

Renumber *2-9.4 as *2- 70.4.

Renumber 2-9.5 as 2-70.5. In the first line delete "indicating" after "or" and delete entire second sentence.

0

20-7 REVISIONS TO NFPA 2 0 COMMITTEE ON VCATER E X T I N G U I S H I N G SYSTEMS 2 0 - - 8

2d. Section "2- I I.

Renumber *2-9. 7 as *2- I I.

Renumber *2-9. 7. l as *2- 1 I. I.

25. Section 2- 12:

Renumber 2-9.6 as 2- 12.

Renumber 2-9. 6. 1 as 2- i2. I.

Renumber 2-9.6.2 as 2-12.2.

Renumber 2-9.6.3 as 2- 12.3. Revise references from Table 2- 16, 2-9.6.9 and A-2-9.6.9 to Table 2-20, 2-12.9 and A-2-12.9 respectively.

Renumber 2-9.6.d as 2- 12.4. 2-9 .6 .5as 2-72.5. *2-9.6.6 as *2-72.6. 2-9.6.7 as 2-12.7.

Renumber 2-9.6.8 as 2-12,~ and in the second line change " T a b l e 2-16" to " T a b l e 2-201'

Renumber *2-9.6.9 as "2-12.9, 2-9.6.10 as 2-12.10. Add a new 2- 12. 11 to read as follows:

2-12.11 A shutoff valve s h a l l not be installed in the relief valve supply or discharge piping.

26. Section 2- 13.

Renumber 2- 10 as 2- 13. 2-10.1 as 2-73. I. 2- 10.2 as 2- 13.2, *2-10.2. 1 as *2-13.2. I. 2- 10.2.2 as 2- 13.2.2 and revise to read as follows:

2-13.2.2 All of the meter system p ip ing shall be sized as specified by the meter manu fac tu r e r but not less than the mete r device sizes shown in T a b l e 2-20.

Renumber 2- 10.2.3 as 2- 13,2.3 and revise to read as follows:

2-13.2.3 The m i n i m u m size mete r for a given p u m p capac i ty m a y be used where the meter system piping does not ex-, ceed 100 feet (30 m) equiva len t length. Where meter system p ip ing exceeds 100 feet (30 m) (length of s t ra ight pipe plus equivalent length in fittings, elevation, and .loss through meter) , the next l a rge r size of meter and p ip ing shall be used to min imize fr ict ion loss. The p r ima ry e lement shall be suitable for that p ipe size and p u m p rating. T h e r eadou t ins t rument shall be sized for the p u m p ra ted capaci ty. (See Table 2-20.)

27. Section 2-13.3.

Renumber 2-10.3 as 2-13.3.

Renumber *2- 10.3. 1 as *2- 13.3. 1 and revise to read as follows:

"2-13.3.1 Hose valves shall be listed. T h e n u m b e r and size of hose valves used for p u m p testing shall be as specified in Tab le 2-20,

The exception remains the same. Renumber 2-I0 .3 .2 as 2-13.3.2 and revise to read as follows:

2-13.3.2 Hose valve shall be th readed to conform to the Amer ican N a t i o n a l Fire Hose Connect ion Screw Thread , as specified in N F P A 194, Screw Threads and Gaskets for Fire Hose Connections (see Appendix C).

Exception. 14Tzere local hose coupling threads do not conform to the American National Fire Hose Connection Thread, the authorit~ having jurisdiction shall designate the threads to be used.

Renumber 2-10.3.3 as 2-73.3.3 and add " o r but ter f ly" after " ind i - ca t ing" in the third line. At the end change "(See Fig. A-3-4. 1.)" to "(See Fig. A-3-2. I.)2'

2X Section 2- 14. Renumber 2- 11 as 2- ld and revise to read as follows.

2-14 Power Supply Dependability.

2-14.1 E lec t r i c S u p p l y . Careful considerat ion shall be given in each case to the dependab i l i t y of the electric supply system and the wiring system. This shall include the possible effect of fire on transmission lines ei ther in the p rope r ty or in adjoining, bui ldings which might threaten the p roper ty .

2-14.2 S t eam S u p p l y . Careful considera t ion shall be given . ^~^L pp ly ~- -~ .u^ in cat.li case to the ucpcl-iuaulutya--- .a_u-~:~._ of the s team su anu mc steam supply system. This shall inc lude the possible effect of fire

t on transmission t--P~--~ ~'; "n,, e i ther . . . . . ;,, ~h~ p rope r ty or in - ,~o i n ; , ~ ` . , ..... bui ldings which might threaten the p rope r ty .

29. Section 2- 15. Renumber 2- 12, 2- 12. I and 2- 12.2 as 2- 15, 2- 15. 1 and 2-15.2 respectively. In 2-15.2, in the fourth line delete " m a x i m u m design working pressure of the p u m p " and add " h e a d capabi l i t ies of the m a x i m u m d iame te r impeller , for the casing, a t shut off, plus the manufac tu re r ' s m a x i m u m al lowable suction head . "

30. Section *2- 16. Renumber *2- 1,3 as *2- 16.

31. Section *2- 17. Renumber *2- ld as *2- 17.


32. Section 2- 18. Renumber 2-15 as 2-18 and revise to read as follows:

2-18 Gear Drive. All gear drives shall be rated by the manufacturer at a load equal to the maximum horsepower and thrust of the pump for which the gear drive is intended.

33. Section *2- 19.

l~enumber *2-4 as *2-19. 2-4. 1 as 2-19. 1. 2-4.2 as 2- 79.2. *2-4.3 as *2- 79.3. In the first line add "or butterfly" after

"Indicat ing," in the last line change "(See Fig. A-2-4.3.)" to "(See Fig. A-2-19.3 . ) ."

Renumber *2-4.4 as *2- 19.4, 2-4.5 as 2- 19.5.

34. Section 2-20. Renumber 2-16 as 2-20 including Table. In Table 2-20 add a complete new line of figures from left to right as follows: 5000, (18 925), 16, (406), 14, (356), 8, (20,~), 14, (356), 10, (254), 2 0 - - 2 x/'~2, (63), 12 and (305).

35. Section 3-1.1. Revise the first sentence as follows:

Horizontal pumps shall be of Split-Case or End Suction design.

36. Section3-1.2. rn the second line "after "where a" add "static."

37. Section3-3. Renumber ,3-4 as 32,3; *,3-4. 1 is revised to read as follows:

"3-3.1 Where necessary, the following fittings for the pump shall be provided by the pump manufacturer. (See Fig. A-3-3. 1.)

(a) Automatic air release. (Split-Case pumps only.)

(b) Circulation relief valve.

(c) Pressure gages.

*3-3.2 Where necessary, the following fittings shall be provided :

(a)

(b)

(c)

(d)

(e)

Eccentric tapered reducer at suction inlet.

Hose valve manifold with hose valves.

Flow measuring device.

Relief valve and discharge cone.

Splash shield between pump and motor.

COMMITTEE ON WATIi)R EXTINGUISHING SYSTEMS 20--10

Section 3-3.3 Renumber 3-4.2 as 3-3.3.

The present 3-3. 7 is.now 2-7.2, 3-3.2 is now 2-1.5, 3-3.3 is deleted, 3-3.4 is now 2-9.4, 3-3.5 is now 2-8. 1.

38. Section ,~-4, 3-4. 1,

39. Section A-3-6.)" to

3-5. Renumber 3-5, 3-5. 1, 3-5.2, *3-5.3 and 3-5.4 as 3-4.2, *3-4. 3 and 3-4.4 respectively.

*3-5. Renumber *3-6 as-*3-5 and at the end change "(See "(See A-3.5 . ) ."

40. Section 4-&2.2. In the second line delete everything after "below- ground" and add "oil lubricated type pumps shall be used."

41. Section 4-5. 1.3. In the first line after "drives" add "and flexible connecting shafts."

42. Section 5-2. Revise to read as follows:

5-2 Water Supplies.

5-2.1 Installation of special fire service-pumps shall conform to the applicable provisions of Section 2-1, Water Supplies, and 3-1.2, Application.

5-2.2 Wells. Wells developed in unconsolidated formations without an artificial gravel pack (tubular wells) are acceptable sources of water supply for special service fire pumps. They shall comply with all requirements of 4-2.3 and all of 4-2.4 except 4-2.4.4 and 4-2.4.5.

43. Section*6-1. Add a new sentence to read as follows:

Sections specially referring to installations of electric motor driven pumps are: Section 230-2, Exception 1; Section 230-82, Exception 5, and Section 9.30-44.

44. Sections 6-2. 1 and 6-2.2. Change the first word from "When" to "Where."

45. Section 6-3.3. 1. Revise to read as follows:

6-3.3.1 Each line between the power supply circuits at utility plants, substations or plant load distribution centers and ahead of fire pump feeder circuits shall be sized in accordance With the National Electrical Code, NFPA 70, Article 430, Part B, Motor Circuit Conductors; Section 230-2, Exception 1; Section 230-44; and Section 230-82, Exception 5. (See Appendix C.)

2 0 - 1 1 REVISIONS TO NFP)x 20

46. Section "6-3.3.21 Add a new section as follows:

*6-3.3.2 E a c h line installed in the fire pump feeder circuit shall be sized at 125 percent of the sum of the full load current(s) of the fire p u m p and jockey p u m p motor(s) plus the current of the necessary associated fire p u m p installation electrical acces- sories, (See the National Electrical Code, NFPA 70, Section 230-90(a), Exception 5 [see Appendix C].)

47. Section *6-3.3.3. Renumber *6-3.3.2 as *6-3.3.3.

48. Section 6-3.3.4. Renumber 6-3.3.3 as 6-3.3.4.

49. Section 6-3.4.2. Add a reference at'the end to read as,follows:

(See also N F P A 70, the National Electrical Code, Section 230-90(a), Exception 5 [see Appendix C].)

50. Section *6.5. 1. Change from *6.5. 1 to *6-5. 1.

51. Section 6-6. Add a new section with four subsections as -follows:

6-6 Emergency Generators.

6-6.1 Where emergency generators are used to supply emergency power to fire pumps, they shall be of sufficient capaci ty to allow normal starting and running of a motor(s) driving a fire pump(s) while supp ly ing all other loads connected to the generator.

6-6.2 Transfer of power .shall take place within the p u m p room.

Exception: With permission from the authority ha~dng jurisdiction transfer may be made at the location of the" power supply protective devices -for the fire pumt) room -feeder conduc'tors.

6-6.3 Conductors between transfer switch and emergency source shall comply with 6-3.3.

6-6.4 Protective devices in the emergency power source circuits at the generator shall allow instantaneous pick-up of the full p u m p r o o m electric load. '

52. Section 7-1. 1.1. Add subsections as follows:

(a) Any controller selected shall have a short circuit current withstand rating at least equal to the available short circuit current for the circuit in which it is used.

COMMITTEE ON WATER EXTINGUISHING SYSTEMS 20-12

(b) Short circuit current at the controller shall be determined by using Table 7-4.2.9 when the installation meets the criteria established in the notes to the table. Otherwise a short circuit study must be made to establish the available short circuit current at the controller in accordance with I E E E No. 141, Elec- tric Power Distribution for Industrial Plants or I E E E No. 241, Electric Systems,for Commercial Buildings. (See Appendix C.)

53. Section *7-2. 1. Add an asterisk to read *7-2. 1.

54. Section 7-2. 3. Revise to. read as follows:

7-2.3 For controllers which require rear access for servicing, a clearance of not less than 31/~ feet (1.1 m) shall be provided at the rear of the controller and not less than 2 feet (0.61 m) on at least one side of the controller.

55. Section 7-4. 1. Revise to read as-follows.:

7-'t.1 I so la t ing Means . The isolating means shall be a manual ly operable motor circuit switch or a molded case switch, either having a horsepower rating equal to the motor horsepower.

Exception No. 7. A molded case switch having an ampere rating not less than 115 percent o9: the motor ,full load current, and also suitable -for interrupting the motor locked rotor current shall be permitted.

Exception No. 2: This isolating means is not required on limited service controllers.

56. Section 7-4. 7.2. In the first line change "swi tch" to "isolating means."

57. Section 7-4.2.7. Revise 7-4.2.7(a) as follows:

(a) For a squirrel cage induct ion motor, the circuit breaker shall be :

1. Of the time delay type having a tr ipping time between 8 and 20 seconds at locked rotor current (this is approximately 600 percent of rated full load current for a squirrel cage indue- tion motor) .

2. Calibrated in amperes up to and set at 300 percent of the motor full load current.

58. Section 7-4.2.8. Add a new section to read as follows:

7-4.2.8 ~ The overcurrent sensing elements of the circuit breaker shall be of the nonthermal type.

Exception: Ambient temperature compensated thermal elements may be used.

20-13 R E V I S I O N S TO N F P A 2 0

59. Section *7-4.2.9. Renumber *7-4.2.8 as *7-4.2.9 and revise as follows: In the first sentence, change the words "short-circuit" to "interrupting." In the second sentence, in the fourth line, change the words "short-circuit current" to "interrupting." In the fourth sentence, change the words "short-circuit current" to "interrupting." In the fifth sentence, change the words "short-circuit current" to "interrupting." In the sixth sentence, change the word "switch" to "means" and change the reference to "(See Fig. A-7-4.2.9.) . In the eleventh line change 7-2.4.7 to 7-4.2.7.

60. Section 7-4.2.10. Renumber 7-4.2.9 as 7-4.2.10. In the first line change "short-circuit c~rrent" to "interrupting." In the second line change "Tab le 7-4.2.9" to "Table 7-4.2.10." Renumber Table 7-4.2.9 as Table 7-4.2. 10 and revise as follows:

Change the words "Short-Circuit Current" in the title to "Inter - rupting." In the third column heading of both the Table and the Table (cont.), change the words "Short-Circuit Current" to "Inter rupt ing." In the notes to this Table, under (a), change the words "short-circuit" to "interrupting."

61. Section 7-4.2.77. Renumber 7 -4 .2 .10as7 -4 .2 .11 .

62. Section *7-5.2. 7. Revise as follows:

In the first sentence, add the word " independent" between the words "having" and "high." Add a new second sentence to read as follows:

The pressure sensing element of the switch shall be capable of withstanding continuously, without losing its accuracy, a minin~um pressure of 500 pounds per square inch (34.5 bars). The present second sentence becomes the third sentence and is changed as follows:

Suitable provision shall be made for relieving pressure to the pressure-actuated switch, to test the operation of the controller and the pumping unit. (See Fig. A-7.5.2. 1.)

Add a new item under this subsectionto read as follows:

(a) Each controller for multiple pump installations shall have is own individual pressure sensing line.



C O M M I T T E E ON W A T E R E X T I N G U I S H I N G SYSTEMS 20-14

65. Section 7-5.2.5. Renumber 7-5.2.4 as 7-5.2.5 and revise as follows:

Add a new title as follows: "External Circuits Connected to Con- trollers," in the fourth line after "circuits" add " m a y cause continuous running of the fire pump but shall not prevent the controller(s) from starting the fire pump(s) due to causes other than these external circuits."



68. Section 7-6.8. Revise to read as follows:

7-6.8 When the contactor also performs the functions of a circuit breaker, it shall comply with the requirements of 7-4.2, 7-4.3 and 7-5.3.2.

Exception No. 7: In addition to the overcurrent devices providing protection according to 7-4.2.7, current limiting fuses shall be mounted in the controller enclosure, connected between the isolating means and the contactor, and shall not open under locked rotor current of the motor and shall open the circuit safely under the short circuit current available at the fuses.

Exception No. 2: When the contactor is latched-in according to 7-5. 3.2, the overcurrent protection for a locked rotor condition as specified in 7-d.2.7(a) is not required.

Exception No. 3: The fuses referred to in 7-4.2.9 shall be high voltage current limiting motor starting type.

69. Section 7-7.1. Revise the last sentence to read as follows:

Requirements in Sections 7-1 through 7-5 shall apply except as indicated in the following:

70. Section 7-7.4.2. In the first line change "short-circuit current" to "interrupting."

71. Section 7-8. Add a new section to read as follows:

7-11 Transfer Switches for Emergency Power Supply.

7-8,1 Electrical ratings of manually or automatically operated transfer switches shall comply with 7-4.1.

7-8.2 Automatic transfer switches shall also be capable of manual operation, but only after disabling the automatic operation.

Qt~

20-15 R E V I S I O N S T O N F P A 2 0

7-8.3 An automatic transfer switch shall be in a separate enclosure.

7-8.4 An isolating means, complying with 7-4.1, located within the automatic transfer switch enclosures, shall be provided

, ahead of the emergency input terminals of the transfer switch.

7-8.5 The transfer switch shall be listed for fire pump service.

7-8.6 Auxiliary contacts, installed on the isolating means of the t ransfer switch and controller, shall be arranged in the generator control circuit (from the fire pump room) to prever~t starting of the generator when the controller is being serviced.

(

72. Section 8-2.2. Revise to read as follows:

8-2.2 Engine Ratings.

8-2.2.1 Engines shall be rated at standard SAE conditions for 500 feet (152.4 m) above sea level (29.38 inches or 0.746 m Hg at 85~ [29.4~ by the testing laboratory. (SAE Standard J:816 B, see Appendix C.)

8-2.2.2 Engines shall be acceptable for horsepower ratings listed by the testing laboratory for standard SAE conditions.

8-2.2.3 Engines outside the range and type of listed engines shall=have a bare engine brake horsepower not less than 20 percent greater than the rating established by the testing laboratory at the listed speed.

8-2.2.4 A deduction of three percent from engine horsepower rating at standard SAE conditions shall be made for diesel engines for each !,000 feet (305 m) altitude above sea level.

8-2.2.5 A'deduction of one percent from engine horsepower rating as corrected to standard SAE conditions shall be made for diesel engines for every 10~ (5.6~ above 85~ (29.4~ ambient temperature.

8-2.2.6 W h e r e gear drives (see 8-2.3. 1 below) are used between the pump and its driver, the horsepower requirement of the pump shall be increased to allow for power loss in the gear drive.

8-2.2.7 Engines after complying with the requirements of 8-2.2.1 through 8-2.2.6 shall have a four-hour minimum horsepower rating equal to or greater than the maximum brake horsepower required to drive the pump at its rated speed.

C O M M I T T E E O N W A T E R E X T I N G U I S H I N G S Y S T E M S 20-16

73. Section 8-2.3.1. Add a new sentence at the end to read as follows:

The angle of deflectioii for the flexible connecting shaft shall not exceed the maximum recommended by the manufacturer for the speed and horsepower transmitted.

74. Section 8-2.7.2. Revise as-follows:

Change the third sentence of this subsection to read."

The pipe connection shall include a manual shutoff valve, an approved flushing type strainer in addition to the one that may be a part of the pressure regulator, a pressure regulator, an automatic electric solenoid valve listed for fire protection service, and a second manual shutoff valve in the order shown in Fig. A-8-2.7.2.

Also add an item under this subsection to read as-follows:

(a) Pressure Regulator . The pressure regulator shall be of such size a n d t y p e that it is capable of, and adjusted for, passing approximately 120 percent of the cooling water required when the engine is operating at maximum brake horsepower, and when the regulator is supplied with water at the pressure of the pump when it is pumping at 150 percent of its rated capacity.

75. Section 9-2. 1. Add an asterisk to read *9-2. 1.

76. Section 9-2..3. Revise to read as-follows:

9-2.3 For controllers which require rear access for servicing, a clearance of not less than 21/~ feet (0.76 m) shall be provided at the rear of controller and not less than 2 feet (0.61 m) on at least

__-j_ o n e , ~ u ~ .

77. Section 9-3.6. 1. Revise to read as-follows:

93.6.1 A wiring diagram shall be provided and per- manently attached to the inside of the enclosure showing exact wiring for the cofitroller, including a legend of identifying numbers of individual components. All wiring terminals shall be plainly and commonly marked and numbered to correspond with the wiring diagram furnished. For external eflgine connections, the ter- minal strips shall be commonly numbered.

7~. Section 9-3.6.2. Delete.

lm


79. Section 9-4. 1.2. Revise asjrollows:

Separate pilot lamps and a common audible alarm shall be provided to indicate trouble caused by:

(a) add "eritically':.before "low," (b), (c), (d), and (e) are unchanged.

80. Section 9-4.2. 1. Revise to read asJollows:

9-4.2.1 Engine running (seParate signal).

81. Section 9-4.2.4. In the third line delete "current ."

82. Section 9-4.4. Add a new section to read as jrollows:

9-4.4 Pressure Recorder. When a pressure recorder is used (see A-9-5.2.7), its chart drive shall b e spring wound or A.C. electric with spring driven back-up and shall opera te for at least seven days.

83. Section 9-5.2. 1 . Revise to read as follows:

9-5.2.1 Water Pressure Control. In the controller circuit there shall be provided a pressure-actuated switch having independent high and low calibrated adjustments, and responsive to water pressure in the fire protection system. The pressure sensing element of the swifch shall be capable of withstanding continuously, without losing its accuracy, a minimum pressure of 500 pounds per square inch (34.5 bars). Suitable provision shall be made for relieving pressure to the pressure-actuated "switch, to test the operation of the controller and the pumping unit. (See Fig. A-7-5.2. 1.)

Add a new item under this subsection reading:

(a) Each controller for multiple pump installations shall have its own individual pressure sensing line.



86. Section 9-5.2.5. Renumber 9-5.2.4 as 9-5.2.5 and revise as follows:

9-5.2.5 External Circuits Connected to Controllers. With pumping units operating singly, or in parallel, the control circuits entering or leaving the fire pump controller shall be so arranged that breakage, disconnecting, shorting of the wires, or loss of


power to these circuits may cause continuous running Of the fire pump, but shall not prevent the controller(s) from starting the fire pump(s) due to causes other than these external circuits .


88. Section *9-5.2.7. Renumber *9-5.2.6 as *9-5.2.7.'

69. Section 9-5.3.2. Delete present 9-5.3.2 because it is renumbered 9-5.2. 3.

90. Section 9-5.3.2. Renumber present 9-5.3.3 as 9-5.3.2 and revise the second sentence o) r item (b) to read as follows:

The "a t t empt to start" cycle shall be fixed and shall consist of six crank periods of approximately 15 seconds duration.separated by five rest periods of approximately 15 seconds duration.

91. Section 9-5. 5. In the second line add" and running" after "starting."

92. Section 12-1.4.2(e). Add a new subsection as follows:

(e) The gear drive shall operate without objectionable noise, vibration or excessive heating. (See 4-5. 1.3.)


12-3.4 Replacement Components. Replacement components are not restricted by the unit contract provision of 1-5.1 and may be ordered as needed.

94. Section A-1-8.5. Add a.new section to read as follows:

A-1-8.5 Head . Head is a quantity used to express a form (or combination of forms) of the energy content of water per unit weight of the water referred to any arbitrary datum. In terms of foot-pounds (m-kg) of energy per pound (kg) of water, all head quantities have the dimensions of feet (m) of water. All pressure readings are converted into feet (m) of the water being pumped. The Datum Elevation is defined as follows: For horizontal units it is the centerline of the pump shaft (see Fig. A-1-8.5,"'Horizontal Unit"). For vertical single suction.pumps, it is the entrance eye to the first stage impeller (see Fig. A-1-8.5, "Vertical Single Suction Pump"). For vertical double suction pumps, it is the impeller discharge horizbntal centerline (see Fig. A-1-8.5, "Vertical Double Suction Pump").

2 0 - 1 9 REVISIONS TO NFPA 2 0

HORIZONTAL UNIT

VERTICAL SINGLE SUCTION PUMP

VERTICAL DOUBLE SUCTION PUMP

Fig. A-1-8.5 Datum Elevation of Various Pump Designs.

COMMITTEE ON W A T E R E X T I N G U I S H I N G SYSTEMS 2 0 - 2 0

95. Section A-2- 1.2. Renumber A-3-3. 7 as A-2- 1.2.

96. Section A-2- 1.d. Renumber A-2- 1.3 as A~ I.d.

97. Section A-2-7.1. Renumber A-2-8. 1 as A-2-7.1.

98. Section A-2-7.2. Renumber A-2-8.2. as A-2-7.2.

99. Section A-2-7.6. Renumber A-2-8.6 as A-2-7.6.

100. Section A-2-8. 1. Renumber A-2-9.2 as A-2-8. 1 and delete the second and third sentences, and add " a b o v e g r o u n d " before " s t e e l . "

101. F ig . A-2-9.5. Renumber Fig. A-3-3 .5 .d as Fig. A-2-9.5. and revise Note 2 to read as follows:

N O T E 2 : If testing facilities are to be provided, also refer to Fig. A-2-13.2.1 (a) and Fig. A-2-13.2.1 (b).

102. Fig. A-2-9.6. Renumber Fig. A-3-3 .5 .5 as Fig. A-2-9 .6 and revise as follows:

Delete 4 illustrations to leave 3 as shown, also revise the reference note under the Figure to read as shown:

R I G H T W R O N G

Fig. A-2-9.6 Right and Wrong Pump Suctions.

See Hydraulic Institute Standards for Centrifugal, Rotary and Reciprocating Pumps, Thir teenth Edition, for additional information (see Appendix C).

t lt

20-21 REVISIONS TO NFPA 20 COMMITTEE ON WATER EXTINGUISHING SYSTEMS 20-22 W O0

10,3. Section A-2-9.7. Renumber A-3-3 .5 .6 as A-2-9.7.

104. Section A-2-10.4. Renumber A-2-9.4 as A-2- I0.4.

705. Section A-2-72.6. Renumber ,'1-2-9.6.5 as A-2-12.6.

706. Section A-2- 12.9. Renumber A-2-9 .6 .9 as A-2- 12.9.

707. Section A-2-77. Renumber A-2-9.7 as A-2-71.

706'. Section A-2-77.7. Renumber A-2-9.7.1 as A-2-17. I.

109. Section A-2- 13.2. 1. Renumber A-2- 10.2. / as A-2- 13.2. I including Figures A-2- 70.2. 1 (a) and (b) and revise asJollows:

In Note 6change the reference from Fig. A-2- 10.2. 1 (b ) to Fig. A-2- 7,3.2. 7 (b).

Hose header (if needed for hose streams)

Note 6 to ~ N o t e 2 ~ N o t e 1 ~ "al" ~ ~ f - ' ~ drain or ..--I ~-~ [ Wl k pump wa,;r q-" UZJ I . . ; - - N source Note5 'ifBYf~:;Sue' > 1 ~ J f ' l

system

Flow @ Jockey _ _ ~ O.S. N Y. Gate Valve Meter Pump or Indmating Butterfly

- Valve Check _ < v vo

Fire Hose O.S. & Y. Pump Header Gate Valve

Fig. A-2-13.2.t(a) Diagram of Preferred Arrangement for Measuring Fire Pump Water Flow with Meter. Water Discharge to Drain or to Pump

Water Source.

Frorn supply

Hose header (if needed for hose stre,nns) Note 4

-Note 2 - ~ N o t e 1

Note 61 By-pass

(if of value) ~) ~r ,

~)P ~ ~ TO -~-- N system

- - [ Z ] >

--E}- Flow I--.i Jockey - ~ O.S. & Y. Gate Valve Meter ~ P u m p ~ - - or Indi.catingButterfly

Check Valve "-~ Valve

Fire ~ Hose _ ~ O.S.&Y. Pump Header Gate Valve

Fig. A-2-13.2.1(b) Diagram of Arrangement for Measuring Fire P u m p Water Flow with Meter. Discharge Water Return to Pump Suction. (Not

Recommended)

170. Section A-2- 13.3. !. Renumber A-2- 70.3. 7 as A-2- 13.3. 1.

171. Section A-2- 76. Renumber A-2- 13(a), A-2- 13(b), A-2- 73(c), Fig. A-2- 13(b) and Fig. A-2- 13(c) to A-2- 16(a), A-2- 16(b), A-2- 16(c), Fig. A-2- 16(b) and Fig. A-2- 16(c) respectively.

112. Section A-2-17. Renumber A-2-74 as A-2-77 and in (a) add "Low" before "Pump."

173. Section A-2- 19. Renumber A-2-4 as A-2- 19.

174. Section A-2- 19.4. Renumber A-2-4.4 as A-2- 19.4.

20-23 R E V I S I O N S T O N F P A 2 0 C O M M I T T E E ON W A T E R E X T I N G U I S H I N G S Y S T E M S 20-24

115. Fig. A-3-3. 1. Renumber Fig. A-3-d. / as A-3-3. 1 and revise the notes as follows:

6. Change "(see 3-3.4.6 and A-3-3.4 .6)" to "(see 2-9.7 and A-2-9 .7) ." & and 1 1. Change the'spelling o.fthesecondwordfrom " a e" g g to " g a u g e . "

115. Section A-3-4.3. Renumber A-3-5 .3 as A-3-d. 3 and add two sentences as follows:

A prope r ly designed iner t ia l p l a t fo rm does provide the requi red r ig id i ty to ma in ta in p u m p and d r ive r a l ignmen t and p reven t base

�9 p la te flexing. Provisions must be made for sufficient f lexibil i ty of the connect ing members to prevent stress in the pump suction and discharge connections, fuel l ine connect ions to the engine, or con- du i t connect ion to the motor .

7 77. Section A-3-5. Renumber A-3-6 as A-3-5 and number figure on page 85 as Fig. A- 3. 5.

1 18. Section A.4-2.2.2. Add a new section to read as.follows:

A-4-2.2.2 I n t a k e Des ign . The funct ion of the intake, whether it be an open channel or a tunnel having 100 percen t wet ted per imeter , is to supply an evenly d is t r ibuted flow of wa te r to the p u m p suction bell. An uneven d is t r ibut ion of flow, charac te r ized by s t rong local currents , favors fo rmat ion of vortices and with cer ta in low values of submergence will in t roduce air into the p u m p with reduct ion of capaci ty , accompan ied by noise. The re m a y be vortices which do not a p p e a r on the surface and these also may have adverse effects.

T h e idea l a p p r o a c h is a s t ra ight channe l coming d i rec t ly to the pump . Turns and obstruct ions are de t r imen ta l since they may" cause e d d y currents and tend to ini t ia te deep-cored vortices. The amoun t of submergence for successful operat ion will depend grea t ly on the approaches of the intake and the size of the pump .

The Hydraulic Institute Standards have recommended sump dimensions for flows 3000 gpm (11 355//min) and larger. The design of sumps for pumps with discharge capacities less than 3090 gpm (11 355 l/rain) should be guided by the same general principles as shown in the Hydraulic Institute Standards.

1 19. Figures A-4-2.2.2. Figure A-4-2.2.2 (b) is deleted in its entirety and " (a)" is deleted.from Fzlg. A-d-2.2.2 (a) to read as.follows:

SCREE POSITI

POND INTAKE S C R E E N S ~

SCREEN RAISED

4111---------- ELL

�9 MIN. SUBMERGENCE" ~MUST COVER LOWER

TWO BOWLS

Fig. A-4-2 .2 .2 Vert ica l Shaft T u r b i n e - T y p e P u m p - - Instal lat ion in a W e t Pit.

NOTE: The distance between the bottom of the strainer and the bottom of the wet pit should be one-half of the pump bowl diameter but not less than 12 inches (305 mm).

120. Fig. A-4-d. Delete in its entirety.

121. Section A-6-3.3.3. Renumber A-6-3 .3 .2 as A-6-&3.3 .

122. Section A-7-2. 1. Add a new section to read as follows:

A-7-2.1 I f the cont ro l le r must be located outside of the p u m p room, a g lazed opening should be p rov ided in the p u m p room wall for observat ion of the motor and p u m p dur ing start ing. T h e pressure control p ipe line should be p ro tec ted agains t f reezing and mechan ica l injury.

12,3. F(g. A-7-d.2.9. Renumber Fig. A-7-4.2.8 as Fig. A-7-d.2.9. m

20-25 ' REVISIONS TO NFPA 20

72d. Fig. A-7-5.2. 1. Revise as follows:

In the title add "Each" after "for" and at the end add "(including Jockey Pumps)." Add a note to read as follows:

N O T E : Solenoid dra in valve used for engine dr iven fire pumps may be a t " A , " " B " or " ins ide of control ler enclosure."

In the lower right hand corner of the drawing add "or Solenoid" after ,,1~ Plug."

725. Section A-9-2. 1. Add a new section to read as follows:

A-9-2.1 If the controller must be located outside of the pump room, a glazed opening should be provided in the pump room wall for observation of the motor and pump during starting. The pressure control pipe line should be protected against freezing and mechanical injury.

126. Section A-9-& 1.1. In the fourth line delete "or potential trans- former."

127. Section A-9-5.2.7. Renumber A-9-5.2.6 as A-9~5.2.7.

128. Editorial Corrections:

Delete dates on all referenced standards throughout the standard and replace with "(see Appendix C)."

At the bottom of Table 1-9, add a note to read as follows: For additional conversions and information, see ASTM E-380 (see Appendix C).

Change title of Reference Publicatio~s on page 72 to Appendix C and insert after Appendix B to read as follows:

Appendix C This Appendix is not a part of this N F P A ,Standard but is included for information purposes

only.

C,-1 Reference Publications.

C-1-1 NFPA Standards. This standard makes reference to the following NFPA codes and standards and the year dates shown indicate the latest editions available. They are available from the National Fire Protection Association, 470 Atlantic Avenue, Boston, M A 02210.

(a) NFPA 13-1976, Standard for the Installation of Sprinkler Systems. '

(b) NFPA 14-1976, Standard for the Installation of Standpipe and Hose Systems.


(c) NFPA 15-1977, Standard for Water Spray Fixed Systems for Fire Protection.

(d) NFPA 16-1974, Standard for the Installation of Foam- Water Sprinkler Systems and Foam-Water Spray Systems.

(e) NFPA 24-1977, Standard for Outside Protection.

(f) NFPA 31-1974, Standard for the Installation of Oil Burning Equipment.

(g) N F P A 70-1978, National Electrical Code.

(h) NFPA 194-1974, Standard for Screw Threads and Gaskets for Fire Hose Connections.

C-1-2 Other Codes and Standards. This standard makes reference to the following publications and the year dates shown indicate the latest editions available.

(a) ANSI C37.27-1972, IEEE Application Guide for Low Voltage Non-Integrated Fused Power Circuit Breakers (using separately mounted current limiting fuses), American National Standards Institute, 1430 Broadway, New York, NY 10018.

(b) Hydraulic Institute Standards for Centrifugal, Rotary and Re- ciprocating Pumps, Thirteenth Edition-1975, Hydraulic Institute, 1230 Keith Building, Cleveland, OH 44115.

(c) ASTM E380-1976, Standard f6r Metric Practice, American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.

(d) IEEE No. 141, Electric Power Distribution for Industrial Plants, Institute of Electronic and Electrical Engineers, 345 East 47th Street, New York, NY 10017.

(e) IEEE No. 241, Electric Systems for Commercial Buildings, Institute of Electronic and Electrical Engineers, 345 East 47th Street, New York, NY 10017.

(f) NEMA Standard MG1-Parts 1, 2, and 14, National Elec- trical Manufacturers Association, 155 East 44th Street, New York, NY 12305.

(g) SAE J 816B--1973,'Engine Test Code, Spark Ignition and Diesel, Society of Automotive Engineers, 400 Commonwealth Drive, Pittsburgh, PA 15096.

0

INTRODUCTION 1 3 E - 5

Part II

R e c o m m e n d a t i o n s for

Fire Department Operations in Properties Protected by Sprinkler and Standpipe Systems

NFPA 13E-1978

Introduct ion

0-1 Many properties have private fire protection equipment provided both to protect lives and preserve "property values. Such protection includes sprinklei" systems and standpipe systems. Each year fire departments respond to thousands of alarms in properties having such protection. These properties are located not only in areas protected by paid departments but also in areas protected by call and volunteer departments. If the private protection equipment is to do the job for which it is designed, it is essential that fire departments:

(a) Make plans for operations in properties so protected. This calls for inspection by responsible fire department personnel and what is termed in the fire service, '~prefire planning," including consultation and cooperation with the property emergency fire organization.

(b) Develop standard procedures for operating at fires in protected properties so that the private fire protection facilities will be used to maximum efficiency.

The purpose of this text is to cover three types of privatc firc protection equipment as follows:

Chapter 1 suggests procedures for fire department operations in properties protected by automatic sprinklers;

Chapter 2 Suggests procedure s for fire department operations at properties having outside sprinkler systems for exposure protection; and

Chapter 3 suggests procedures for fire department operations in buildings having standpipe systems.

0-2 Units. Metric Units of measurement in this standard are in I accordance with the modernized metric system known as the Interna- I l id

13E-6 PROPERTIES PROTECTED

ional System of Units (SI). Two units (litre and bar), outside of but recognized by SI, are commonly used in international fire protection. These units are listed in Table 0-2 with conversion factors.

0-2.1 If a value for measurement as given in this standard is followed by an equivalent value in other units, the first stated is to be regarded as the requirement. A given equivalent value may be ap- proximate.

T a b l e 0-2

N a m e of U n i t U n i t Symbol Conver s ion Fac tor

litre l 1 gal. = 3.785 l cubic ddc imet re d m 3 1 gal . = 3.785 d m 3 pascal Pa 1 psi = 6894.757 Pa bar bar 1 psi = 0.0689 bar bar bar 1 bar = 105 Pa

For addi t ional conversions and informat ion , see ASTM E 380-76, Standard for Metric Practice.

AUTOMATIC SPRINKLER SYSTEMS 13E-7

Chapter 1 Automatic Spr inkler Systems

1-1 General.

1-1.1 Complete details on the installation of all approved types of sprinkler systems and the care and maintenance of sprinkler systems are covered by the following: NFPA 13, Standard for In- stallation of Sprinkler Systems, and NFPA 13A, Care and Maintenance of Sprinkler Systems (see Appendix A).

1-1.2 The National Fire Protection Association records of more than 100,000 fires over an 80-year period show that automatic sprinkler protection is over 95 percent effective. The actual percentage of successful performance is probably higher, since many small fires extinguished by one or two sprinklers go unreported. The small percentage of fires in which operation of automatic sprinklers is unsatisfactory is responsiblefor a large percentage of the losses in sprinklered properties.

1-1.3 There are two principal causes of unsatisfactory sprinkler performance: closed valve in water supply line and inade- quate water delivered to the sprinkler system. Unsatisfactory sprinkler performance from these causes can be reduced by in- telligent fire department planning and operations, if the fire department is called soon enough. Every fire department training program should include a course on the fundamentals of sprinkler systems.

1-1.4 Automatic sprinkler protection is designed to put water on- a fire automatically without waiting for h u m a n operation. If the automatic sprinkler system should not completely extinguish the fire, it can ordinarily be depended upon to hold a fire in check at the point of origin and give an alarm so that proper measures may be taken to complete extinguishment.

1-2 Inspection and Prefire Planning.

1-2.1 Success of fire department operations at t i res in properties protected by automatic sprinklers will generally reflect the ade- quacy of the fire department inspections and plans made in advance of an emergency. Unless the fire department officers, who will be in direct charge of operations at a particular property, are fully familiar with plant layout, general occupancy hazards and processes, and the nature and operation of private fire protection equipment, unnecessarily large losses may be e~/pected.

1-2.2 In properties protected by automatic sprinklers, fire of- ricers, including the chief of the district and officers assigned to first due companies, should know:


(a) The buildings and na tu re of occupancies protected by au tomat ic sprinklers, the extent of this protection, and the type of sprinkler systems;

(b) The water supply to the sprinklers, inc luding the source and type of supply, the volume a n d p r e s s u r e normal ly available;

(c) The location of all sprinkler control valves, what each valve controls, and the consequence of shut t ing off any valve;

(d) The location of fire depa r tmen t connections to sprinkler systems, the specific area each connect ion serves, and the water supply, hose and pumper layout that will be used to feed the sprinkler connections.

1-2.3 In prefire p l a n n i n g of operations in sprinklered buildings, perhaps the most impor t an t step is preparat ion of a sketch of the sprinkler water stipply system. This should be prepared by the fire depa r tmen t officers who will be concerned with operations at actual fires. In order to be fu l ly fami l i a r with the sprinkler system, it is very impor tan t that the officers mak ing these sketches for fire depart- men t operat ions study the actual water supply piping t o the sprinklers from the source to the sprinkler risers, not ing on the sketch all control l ing valves with indicat ion as to the type of valve and what each controls. Water supply may be from city mains, p lant fire pump, gravity tank or pressure tank, or a combina t ion of these.

1-2.4 Where supply is from a fire p u m p it is impor tant to note the source of suction, the type of power for the pump and arrange- men t for stai ' ting the pump.

NOTE: See NFPA 20, Standard for the Installation of Centrifugal Fire Pumps (see Appendix A).

1-2.5 For all types of water supplies, it is impor tant that the fire flow and pressure available be de termined by appropriate flow tests. Where the water supplying the sprinklers is limited, it should be obvious that diversion of water to large hose streams [approximately 250 gpm (946 l /min ) each] may make the sprinklers ineffec- tive. By studying the water supply connect ions and piping, fire depa r tmen t personnel will realize that the sprinkler system automat ica l ly delivers the water directly to every potential fire area with the m a x i m u m efficiency.

1-2.6 In many cases the organizat ion +carrying fire insurance on a sprinklered property has the informat ion needed to prepare the fire depa r tmen t sketches. Such informat ion may be available through the property owner. In some instances the fire depar tment inspectors may find that the p lant engineer or other plant official has available detailed plans or informat ion on the sprinkler layout; however, experience has shown that often such plans are not up to

A U T O M A T I C SPRINKLER SYSTEMS 13E-9

date and may be inaccurate . By mak ing their own sketches, the fire depa r tmen t will+not only have up- to-date informat ion but will be famil iar with the layout of the plant 's fire protection. Also, on many occasions inspectors have found closed valves or otherwise impai red protection that could only be located by regular inspections.

NOTE: Figure 1-2.6(a) is a suggested form which may be useful to fire departments inspecting sprinklered properties.

1-2.7 Arrangements should be made with the property owner for enter ing the bu! ld ing as quickly as possible when the bu i ld ing is una t tended . If such a r rangements are made, the necessity for using forcible entry equ ipmen t may be reduced and damage from the use of such equ ipmen t avoided.

Figure 1-2.6(a). Suggested Inspection Form for Sprinklered Properties.

Name of Plant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fire Inspection District No . . . . . . . . . . . . . . .

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fire Alarm Code No . . . . . . . . . . . . . . . . . . . Description of Property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plant Official Responsible for Sprinklers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Phone . . . . . . . . . . . . . . . . . . . . Type of Automatic Sprinkler System (Wet, Dry, Deluge, etc.) . . . . . . . . . . . . . . . . . . . .

No. Sprinkler Heads . . . . . . . . . . . . . . . . . . Size of Connection to Main . . . . . . . . . . . . . . Spare Sprinkler Heads Available . . . . . . . . . . . . . . . Stored . . . . . . . . . . . . . . . . . . . . . . . . Automatic Sprinkler Valves:

Location . . . . . . . . . . . . . . . Type . . . . . . . . . . . . . . . Controlling . . . . . . . . . . . . . . . Cold Weather Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Water Supplies to Sprinklers: Public Main . . . . . . . . . . . Gravity Tank . . . . . . . . . . . Pressure Tank . . . . . . . . . . . Private Fire Pump . . . . . . . . . . . . . . . . . . Volume in Storage . . . . . . . . . . . . . . . . . . Static Pressure . . . . . . . psi . . . . . . . . gpm Available at . . . . . . . Residual Pressure Post Indicator Valve Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fire Department Connections: Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Company Assigned to Pump Into Sprinkler on First Alarm . . . . . . . . . . . . . . . . . . . Hydrant to be Used (normal procedure) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supplemental Pumper Supply Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sprinkler Alarm Devices: Local Waterflow . . . . . . . . . . . . . . . . . . . . . Master Alarm Box . . . . . . . . . . . . . . . . . Central Station . . . . . . . . . . . . . . . . . . . . . . Other . . . . . . . . . . . . . . . . . . . . . . . . . . . Supervised by . . . . . : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Guard Service: Remarks: Include any pertinent special information that may affect fire department

operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Inspected by . . . . . . . . . . . . . Approved by . . . . . . . . . . . . . Date . . . . . . . . . . . . . . . . . . . .

: ' ' ; : ' L + + l + i " ; + + " ; ~ , .~...++.....r+...+....+--r--++-.+l + i l~+-+ . . . .+ . .+ . . ,+ . . . .+ . . i ................... +._ - ! . . , .+ ............. +..... + . . . . . . . . . . L - - , L . -~ . . . . ! ,.....~..., . .h .+ . . . . 4 . . . . . . . .L . . . - . .L~ . . . . . . . . . t . . . . . . . . . t . . . . . . . . . . ~_

PROPERTIES PROTECTED 1 3 E - 1 0

+~" TO + r ' d 3 1 I i n I K W P 3 O O P I ' . ! i i ! + ToGr id i J

+ + + +-+ , + - + i • i ~ +++_i t i i + + ; ........... i+t-+-+ + ' " ,q---~'"-"l '""+"+"'+"+"'+-'~l+'-l-"~P"-+l"- + " t " ' - P - ' ' + ' - ' - ' + "';-'+"t'+"+"+, . . . + P . + + - - ' ~ . . . . . . . . ~ . . . . . . . .

Figure 1-2.6(b). Typical quick sketch by a fire inspector of an indust r ia l prop- " erty. Notes which he migh t make concern ing water supply, prefire p l a n n i n g and

f i regeound operations are shown on the following page.

b

�9 AUTOMATIC SPRINKLER .SYSTEMS 1 3 E - 1 1

Notes: 363 Main St., 4 story, brick-joist, protected by wet pipe spr inkler system suppl ied

by 6-inch publ ic water ma in . FD connect ion on f ront of bui lding. . Main control valve in display room front end of 1st floor (left side). Valve for m a n u a l operat ion of water cu r t a in in office on 1st floor (r ight side of entrance) . Cold weather valve for sprinklers on loading p la t form in sh ipp ing room between doors. Inspector 's ~ test connect ion at r ight h an d rear of sh ipp ing room on 1st floor. In event of fire in unspr ink le red section: Make certain fire doors are closed. Operate water cur ta in . Place charged hose line to cover fire door opening. P u m p into fire depar tment connect ion.

Prefire P lann ing : Notes on FD operat ion at 363 Main St. Main B u i l d i n g - - 4 story brick; 50 x 80;

wood-joisted floors; protected by wet pipe automat ic spr inkler system suppl ied by 6-inch publ ic water ma in . FD spr inkler connect ion at left side of f ront wall. Nearest h y d r a n t 70 feet f rom f ront door and 90 feet f rom spr inkler connect ion. (Note: In the event the fire is in unspr ink le red wood-frame warehouse, it migh t not be possible to connect p u m p e r directly to this hydran t . Main spr inkler control valve is in display room at r igh t of m a in en t rance on 1st floor. Inspector 's test connection is in rear fire exit tower. Automat ic spr inklers on loading p la t form are controlled by cold weather valve between doors on lef t -hand s ide of shipping. depar tment . Valve cont ro l l ing outside (manua l ly opera ted) .water cu r t a in is located in office at r i gh t -hand side of ma in en t rance .

For SI Uni t s 1 in. = 25.4 m m I ft. = 0.3048 m . �9 1 gpm = 3.785 l /min 1 psi = " 0.0689 bars

Special procedure i n event of fire in unspr ink le red warehouse at+365 Main St. 1. Operate valve cont ro l l ing water cu r t a in on m a in bui lding. 2. Check to see that fire doors are closed between bui ldings. 3. Pump into fire depa r tmen t spr inkler connect ion in m a in .building.

(Do not use hyd ran t in f ront of fire for this purpose.) 4. R u n charged l ine to g u a rd fire door openings into ma in .bu i ld ing . 5. Make certain tha t all windows are closed t h ro u g h which smoke or f ire could

enter m a i n plant .

1-3 W a t e r S u p p l y f o r F i r e F i g h t i n g .

1 -3 .1 T h e e f f e c t i v e n e s s o f a u t o m a t i c s p r i n k l e r p r o t e c t i o n , l i ke m o s t o t h e r f i r e f i g h t i n g o p e r a t i o n s , d e p e n d s in l a r g e m e a s u r e u p o n t h e a d e q u a c y o f t h e w a t e r s u p p l y . S p r i n k l e r s p u t w a t e r o n f i f e s f a s t e r a n d w i t h g r e a t e r e f f e c t t h a n m a n u a l l y a p p l i e d h o s e s t r e a m s a n d t h u s a r e g e n e r a l l y t h e m o s t e f f e c t i v e m e a n s o f g e t t i n g w a t e r o n a f i r e . F r o m t h e f i r e d e p a r t m e n t ' s p o i n t o f v i ew it is l ike h a v i n g l i n e s l a i d a n d s p r a y n o z z l e s p l a c e d in a d v a n c e , a l w a y s r e a d y in c a s e o f f i r e .

4 ~

�9 |

Figure 1-3. Water supplies for an automatic sprinkler system may be: (A) gravity tank on a tower; (B) private fire pump with suction source; (C) public water main; or (D) fire department connection.

(~)Gravity Tank

Tank Contro.~l - - . . - V a l v e s .

Check

/ Check Valve

(~) Fire Pump

VMain Post Indicator Valve Check Valve

:ity Valve

, Suction Tank

Pump

I

, 0

,i o

0 "

t ~

/

supplying' Pumper SlXinklers from public water main. ~ ~ =

Note- Fire deporlment conneclion m(l~ bypeas any closed valves,

Pipe from private water supply ( /

Keep Pumpers off private

hydrants

Figure 1-3.2. When fire occurs in a sprinklered plant, one of the first alarm pumper companies to arrive should connect lines to pump into the fire departmeu( connection.

I

Oo


1-3.2 In f ight ing fires in spr inklered buildings, it is impor t an t to make cer ta in the sprinklers get p lenty of water at good pressure. This means that the pref ire p l ann ing must be concerned with sources of water supply and where pumper s will be located. Each s i tuat ion must be worked out on its own meri ts . However, the fire d e p a r t m e n t should avoid compe t ing with the sprinklers for water supply for hose streams. T h e water for hose s t reams should not come from mains supply ing sprinklers unless the mains are known to have sufficient capac i ty and pressure for both sprinklers and hose streams. Other- wise, as shown in Figure 1-3.2, water for hose s t reams should come from ano the r water ma in or f rom a p u m p e r at draf t . It is genera l ly considered poor prac t ice to a t t ach p u m p e r s to hydran ts on pr ivate water systems.

1-3.3 Contrar iwise, it is general ly good prac t ice to p u m p p r o m p t l y into pr ivate water mains supply ing sprinklers to boost the flow norma l ly avai lable . Some pr ivate water systems have fire d e p a r t m e n t connect ions at the p rope r ty line near publ ic hydrants . In some instances, ins tead of a s t a n d a r d fire d e p a r t m e n t connec t ion a "reverse hydran t " is insta l led so that lines from a p u m p e r at the city hydran t can p u m p into the pr ivate hydran t . The reverse hydran t has swivel connect ions on the 2 ~ - i n c h hose connect ions ra the r than the usual ma le outlets. A regu la r pr ivate hyd ra n t may be used for the same purpose by a t t ach ing double female connect ions to several outlets. W h e r e fire pro tec t ion equ ipmen t has different th reads f rom the local fire d e p a r t m e n t hose th read , this fact should be de t e rmine d by the inspector and sui table adap te r s provided . The pref i re plan- n ing and rout ine inspect ion should make cer ta in tha t access to the pr ivate fire pro tec t ion supply connect ions is not b locked by yard storage, security fences, r a i l road s id ings or o ther obst ruct ions that could delay connec t ion of fire d e p a r t m e n t supply lines. In some cases it has been found necessary to ob ta in the coopera t ion of p lan t m a n a g e m e n t in re loca t ing or ex tend ing the fire d e p a r t m e n t connections to a more convenient locat ion. Per iodic inspect ions of p ip ing between the fire d e p a r t m e n t connect ion and the check valve are r e c o m m e n d e d , using a hydros ta t ic test where necessary.

1-4 Fireground Operations in Sprinklered Properties. 1-4.1 It is most i m p o r t a n t that each fire d e p a r t m e n t respond-

ing to proper t ies having au toma t i c spr inkler pro tec t ion have stan- da rd ope ra t ing procedures deve loped for hand l ing fires in spr ink lered bui ldings. It is the duty of the officer in charge at the fire to see tha t these procedures are car r ied out as p rompt ly and ef- f ic ient ly as possible. For the best results the s t anda rd ope ra t ing procedures should be in the na tu re of guidel ines or genera l good practice and not ha rd a n d fast rules which rob the f i reground com- m a n d e r of responsibi l i ty and ini t iat ive.

A U T O M A T I C SPRINKLER SYSTEMS 13E-15

1-4.2 When respond ing to a fire in a spr inklered proper ty it is impor t an t that fire f ight ing opera t ions be based upon a thorough knowledge of t he p roper ty resul t ing from pr ior inspection and "pref i re p lanning" (see 1-2).

1-4.3 On arrival of the first officer, size-up of the fire s i tuat ion is the first prerequis i te of good opera t ion . A fire f ighter should be sent immedia te ly to see tha t control valves are fully opened.-. P u m p e r lines should always be connec ted to the fire d e p a r t m e n t connect ion as quickly as possible to supply adequa t e volume and pressure 'to the spr inkler system in the fire area. Add i t iona l lines should be s t re tched to the fire area.

1-4.4 If no fire or smoke is visible, it is' likely that the fire is very small and e i ther one or two sprinklers have ext inguished the fire or the sprinklers have not yet opera ted . If an outside water motor gong is opera t ing or the a l a rm was received as a centra l or remote s ta t ion spr inkler waterf low signal, it is evident that water is or has been flowing from sprinklers (or in the case of dry pipe spr inkler systems, has entered the system if the dry p ipe valve has t r ipped p rema tu re ly or accidental ly) . Where wat6r vapor is visible it is.evident tha t the sprinklers have opera ted and p robab ly have the fire under . con t ro l or in check. P rompt ac t ion should be taken to complete ex t inguishment to reduce damage . I f b lack smoke and f lame are visible, it may be tha t sprinklers are not ope ra t ing or that the supply valve is closed.

1-4.5 T h e following are good prac t ice suggestions for the gu idance of chiefs or officers in charge of fire d e p a r t m e n t opera t ions in spr inklered bui ldings:

(a) Immed ia t e ly send a fire f ighter to the p rope r control valve tO:

1. Determine that the valve is fully open. (Valves are designed to show open or closed posit ions.)

2'. Open the valve if it has been closed. (One possible excep- t ion would be where valve is " tagged for repai rs ." )

3. Shut the valve only when ordered to do so by the officer in charge.

4. Remain at the valve so that in the event of rek indl ing or any detected extension of fire, the valve can be reopened immediately.

NOTE: The man assigned to the valve should take a light and portable radio so that no time will be lost in transmitting orders to open or close the valve. He should remain at the valve until orders are given for the companies to make up and return to quarters.

13E-16 P R O P E R T I E S P R O T E C T E D

. H

t

V--- Figure 1-4.5(a). Typical fire department connection to automatic sprinkler systems mounted on building wall showing 2Vz-inch intakes which would be supplied by lines from one of the first responding pumpers.

(b) Immed ia t e ly send a fire f ighter to verify that water supplies (fire pumps , booster pumps , etc.) are in full service with all d ischarge and suct ion valves open.

(c) One of the first a l a rm p u m p e r companies on arr iving at the fire should immedia te ly connect two lines to the proper spr inkler fire d e p a r t m e n t connect ion and s tar t p u m p i n g at about 150 pounds per square inch (10.3 bars) [see Figure 1-4.5(a)]. If there is more than one spr inkler system in the fire area, pumpe r s should be connected to provide a d e q u a t e pressure and volume to each sprinkler system that may be in opera t ion .

NOTE: Pumpers should not be connected to hydrants on private water systems unless such systems are designed to maintain the flow needed by fire department pumpers in addition to that required by sprinklers or other private fire protection facilities. Use of pumpers on private hydrants has on a number of occasions deprived private fire protection facilities, including sprinklers, of their water supply resulting in heavy damage or total losses.

Two 2 ~ - i n c h p u m p e r lines can effectively supply 20 to 25 spr inkler heads. If B-inch or o ther large hose is avai lable, this should be used to take advan tage of the avai lable p u m p e r capacity. If it is obvious tha t a serious fire is in progress, a s much water as possible should be p u m p e d into the spr inkler connect ion . This can be done by connec t ing a fire d e p a r t m e n t connect ion to a line feeding the au toma t i c spr inkler fire d e p a r t m e n t connect ion to permi t a t tach- men t of ano ther line or by increas ing pressure at the pump to 175 or 200 pounds per square inch (12.1 to 13.8 bars) if the hydran t flow

\

A U T O M A T I C S P R I N K L E R S Y S T E M S 13E-17

O ~ . c |

n

D~

~ o ' ~ 0 " - .~-~ ~ ' z~=

/

e ~ , . r

~ss

O .~ -"

Ill ~ " ~

~, ~ ~ . ~

.-.11


and p u m p e r cai~acity make this possible. [750 ga l lons -per -minute (2839- / /min) pumpers are designed to give 525 gallons per minu te (1987 / /m in ) at 200 pounds per square inch (13.8 bars) at draf t and 1,000 ga l lons -pe r -minu te (3785- l /min) pumlsers provide 700 gal lons per m inu t e (2650. / /min) at 200 pounds per square inch (13.8 bars) at draf t . H igher flows may be ob t a ined from good hydrants . ]

The spr inkler fire ' d e p a r t m e n t connec t ion on a single spr inkler system is genera l ly on the system side of the ma in control valve [see Figure 1-4.5(c)]. In such cases, the fire d e p a r t m e n t p u m p e r can immed ia t e ly provide pressure to the system whether the ma in spr inkler control valve is open or not. In the case, however, of a bu i ld ing protec ted by more than one spr inkler system, the fire d e p a r t m e n t connect ion is usually loca ted at a point between the gate valve control- l ing the water supply and the ga te valves contro l l ing the individual systems. Therefore , closure of a gate valve contro l l ing one of the in-

d i v i d u a l systems would depr ive that pa r t i cu l a r system of the use of the fire d e p a r t m e n t connect ion . Gate valves are not p e r m i t t e d t o be instal led in the direct l ine f rom the fire d e p a r t m e n t connect ion.

Riser to Sprinkler

Fire Department Fire Department Connection

Piping-----~

Mai~/Cl~176

Check Valve - - - 7 - ' w 7 - ~ ~ r / / / J With Hose From

- - . m ~ . 4" Pipe\ ~/'/-'~t~. Fire Department

"= ~'~ Check ~ / / / ~ _ Grade Hose - - " " ' e / / / , , ' / ~ x / / ~ , / / , ~ v / ~ , . / / z j / ~ , / / . 6 . _ . / valv / / / X . < "

= Fro~ Underground -~

" /~ \ / / ~ , / / ~ , / / ~ ' , / / ~%/ /X \x / / / / / / ~

Figure 1-4.5(c). The fire department connection is generally arranged so t h a t water can be pumped to the sprinklers even t h o u g h the main sprinkler control va lve and sprinkler shut-off valve h a p p e n to be closed. Also, the use of the fire department p u m p makes i t poss ible to p r o v i d e be t t e r pressures for the sprinklers t h a n is normally available from a g r a v i t y t a n k or c i t y m a i n .

AUTOMATIC SPRINKLER SYSTEMS 13E-19

(d) An officer should immedia te ly be o rdered to the fire area to de te rmine the locat ion and extent of fire. He will de t e rmine whether sprinklers have ext inguished the fire or are hold ing the fire under control . He will check for any possible extension of fire both horizontal ly or vert ical ly inc luding concea led spaces. He should have a por- tab le rad io so that he can immedia t e ly repor t to the officer in charge . Where there are sectional or floor valves he should make cer ta in that these are open.. In such cases when the fire is ext inguished, sprinklers m a y be shut off at the sectior/al or floor valve without shut t ing of f the ent ire system. T h e inspect ion records should indica te the locat ion of such valves. In all cases, the officer in charge must use good judg- men t before he orders any spr inkler system valve to be closed.

(e) As quickly as possible and before any spr inkler valve is closed, hose lines should be used to prevent any extension of fire and to complete ex t inguishment . In genera l , 1 ~ - i n c h hose with com- b ina t ion spray nozzles can be used for this purpose. These lines are not only more efficient for in ter ior fire f ight ing but d ischarge 50 to 100 gallons per minu te (189 to 379 / /m in ) as c o m p a r e d with 200 to 250 gallons per minu te (757 to 946 l / r a in ) from 2 ~ - i n c h lines. The smal ler lines thus divert less of the avai lable water from the spr inkler system and reduce water damage . As a genera l rule, it is much more effective to d is t r ibute water th rough the spr inkler system. Hose s treams will be requ i red to merely mop up and ext inguish fire in con- cealed spaces out of reach of sprinklers. Where the fire area is on uppe r floors or otherwise remote from the fire d e p a r t m e n t a p p a r a t u s it m a y be desi rable to also use s t andp ipe equ ipmen t as discussed elsewhere in this text. From a fire f ighter 's point of view, the effect of the sprinklers may be c o m p a r e d with the well-known effect of spray nozzles.

(f) T h e l adde r company , squad company , or o ther uni t per- forming " t ruck" dut ies should be o rde red to vent i la te the fire area as needed in o rder that there be no delay in advanc ing hose lines to comple te ex t inguishment . Windows should be opened p rompt ly in the fire area. Smoke removal fans should be used as necessary. If a serious fire is found to be in progress, full fire d e p a r t m e n t vent i la t ion procedures inc lud ing open ing of skylights and roofs may be ind ica ted provided tha t charged hose lines are avai lable to immedia te ly a t tack the fire.

(g) Only when the fire is comple te ly ext inguished should sprinklers be shut off. If it becomes necessary to enter the fire area to mop-up residual fire, it is impor t an t to have charged hose lines in place and provide adequa te vent i la t ion. If there is a sectional or floor valve, this should be closed. However, if the only control is at

1 3 E - 2 0 PROPERTIES PROTECTED A U T O M A T I C SPRINKLER SYSTEMS 1 3 E - 2 1

the m a i n valve, the order should be sent by radio or messenger to the men stat ioned at this valve. Orders should also be given to the p u m p operator to shut down the lines connected to ' the fire depa r tmen t connect ion as these by-pass the ma in valve, and in the absence of a floor valve, water will flow unt i l the p u m p discharge gates are closed.

Where only a few sprinkler heads are ope ra t ing , sprinkler tongs or tapered wooden wedges may be used to immediately stop the flow from the opened heads. This use of tongs or wedges keeps the system in opera t ion (but not the individual sprinkler heads in which the tongs are inserted) and is sometimes a faster operation than shut t ing the control valve (see Figure 1-5.1).

(h) As soon as manpower permits, salvage operations should be started.

NOTE: Salvage techniques are described in the pamphlet on Fire Department Salvage Operations published by the American Insurance Association (formerly National Board of Fire Underwriters ), 85 John Street, "New York, NY 10038.

(i) W h e n overhaul ing is completed so that there is no possible danger of rekindl ing requi r ing use of sprinklers, the lines from the pumper to the sprinkler system fire depar tment connection may be ordered disconnected.

Figures 1-3.2 and 1-4.5(b) show the proper placement and use of fire depa r tmen t pumpers and hose streams at fires in sprinklered properties.

1-5 Res to r ing P r o t e c t i o n .

1-5.1 When possible, sprinkler protection should be restored by instal l ing new heads of the p roper type and rating. Orders should then be given to the m a n at the valve to t u rn on the water. If new heads are not immediate ly available, the sprinkler tongs or wedges may be left in place unt i l the heads are replaced so that protect ion may be prompt ly restored. If the tempera ture is below freezing and adequate heat cannot b e main ta ined , the p ip ing must be dra ined unti l heat can be re s to red or unt i l air pressure is restored to a dry- pipe system and the sprinkler dry valve has been reset. If there is no sight glass to indicate when a systerii is drained, a ma n should be directed" to check the flow from the drain . Whenever,possible, the fire depa r tmen t should not leave the scene unt i l the system has been placed back in operat ion.

NOTE: NFPA 1901, Standaid for Automotive Fire Apparatu~ (see Appendix ,'/),calls for 12 assorted sprinkler heads, 6 sprinkler stoppers or wedges, and 2 sprinkler head wrenches to be carried on ladder trucks or other apparatus equipped for salvage work. The wrenches must be suitable for servicing the various types of sprinkler heads. The sprinkler heads carried should,include standard types for both upright use where piping is exposed and pendent use where piping is con- cealed. All fire departments, regardless of size and type of organization, whether

Figure 1-5.1. One variety of sprinkler stop or tongs.

paid or volunteer, should have available a supply of automatic sprinkler heads for use as replacement after the fire is extinguished. Such supply of sprinkler heads should be of various degree ratings and marked to be readily identifiable as replacements. Mechanical tongs or wedges of hardwood or similar material, if used to stop flow while the system is being shut off and drained, should be replaced immediately with proper sprinklers. (See NFPA Industrial Fire Brigades Training Manual.)

1-5.2 Ordinari ly, fire depar tments do not p u m p air into a dry- pipe system or reset dry valves or deluge valves. This is the responsibility of the property owr/er or his sprinkler contractor.

1-5.3 Unless there is a representative of the owner or occupant on the premises, the officer in charge should direct the fire a larm operator to notify the owner or authorized representative ' that the sprinklers have operated and that protection should be restored. If there is central station supervision of valves, that company should be contacted if a r u n n e r has not arrived before the fire depa r tmen t is ready to leave the premises.

NOTE: Where automatic sprinkler protection cannot be restored and no representative of the owner or occupant is present, it is good practice to leave a fire fighter on the premises as a watchman so that sprinklers can be turned on promptly should a fire rekindle or another fire occur. If any appreciable amount of burning has occurred in the building or stock'that might cause rekindling, it is good practice to leave a detail with a watch line until the private protection is restored.

1-6 A f t e r t h e F ire .

1-6.1 Many large losses have occurred in sprinklered buildings when subsequent fires occurred before sprinkler protect ion was restored. Protection should be restored, if possible, before the depar tment leaves the scene. If this is not possible, the f i re 'depar t - ment job at a fire in a sprinklered property is not completed when the appara tus returns to quarters. It is very impor tan t to follow up with an inspection to see that normal protection is completely restored.

1-6.2 Each fire depa r tmen t should have a regular method for following up on restoration of automat ic sprinkler protection. This may be handled by the fire prevent ion bureau, by the officers of the


fire company in the district where the fire occurred or by the chief of the district. A good practice frequently followed is for the chief in charge at the fire to revisit the property several hours later to follow up on the situation to make certain that protection has been restored. This often provides an opportunity to obtain additional information relative to the circumstances of the fire and make suggestions to the occupants both as to fire prevention and action to be taken in the event of future fires.

1-6.3 It is also very important that the officer in charge include with his fire report essential data regarding the operation of the sprinkler system. This should always include notation of which company connected to the sprinkler fire department connection and pumped into the sprinkler system and the effect of the sprinkler operation on the fire. Any equipment such as hose streams or ex- tinguishers used in controlling the fire should be noted. If the sprinklers were shut off or not operating properly, this should be reported and the reasons given.

1-6.4 A fire department report of fire in a sprinklered building should include pertinent additional information regarding automatic sprinkler operation such as:

Number of sprinkler heads operating Location of heads operating Result of sprinkler operation Reason for any unsatisfactory operation What member of department was assigned to check control

valve? Was valve closed after fire? Who ordered valve closed? Is sprinkler protection fully restored? By whom? Did the private water supply to sprinklers operate satisfac-

torily? Was water pumped into system? Did fire department connect to sprinkler system? If not, why not? Company connected to sprinkler system: Engine number Number of sprinkler heads replaced by fire department Type of heads installed Was representative of management notified?

1-6.5 Of course, the fire report will also indicate other fire fighting equipment, such as hose streams used on the fire. In addition, a company that has pumped into a sprinkler system should prepare a detailed report including orders received, lines connected to sprinklers, water supply used, pressure maintained, and length of time sprinklers were supplied.

O U T S I D E SPRINKLERS FOR E X P O S U R E FIRES 13E-23

Chapter 2 Outside Sprinklers for Protection Against Exposure Fires

2-1 General.

2-1.1 Many buildings or properties having a severe exposure problem are equipped with outside or external sprinkler systems designed to provide a water curtain capable of shielding the property from fires in other buildings or in storage areas. Most of these systems are designed for manual operation. Some are ther- mostatically operated, open-head systems. Some are specially designed sprinkler heads on pipes extending from a wet- or dry-pipe sprinkler system inside the building and so placed as to protect window openings.

2-1.2 Sprinkler heads for outside protection are specially designed for water curtain effect and when properly used should prevent an exposure fire from entering the building. Heads having various size orifices are available. Small orifice sprinklers (�88 ~16-inch, and ~/s-inch) [6.4, 7,9 and 9.5 mm] are used when windows are narrow or recessed or where the water supply is limited. Large orifice sprinklers are used for more serious hazards where water supply permits. NFPA 13, Standard for Installation of Sprinkler Systems, specifies the size of risers and pipes necessary to supply the various sizes of sprinkler heads required (see Appendix A).

2-2 Prefire Planning. The important things the fire department must know in planning operations in properties having outside sprinklers are the following:

(a) Is the system automatically or manually operated?

(b) If the system is automatically operated, where are the control valves used to shut off the sprinklers?

(c) If the system is manually operated, where are the control valves for turning the system on and off and who is responsible for operation of the valves?

(d) What water supplies are provided for the outside sprinklers?

(e) Is there a fire department connection for pumping into the outside sprinklers? [See Figure 1-2.6(b).]

2-3 Water Supply for Fire Fighting. A sketch should be prepared showing the location of the control valves, the fire department supply connections, and the hydrants to be used for pumping into the system. Where there is an exposure fire problem it must be

O O

13E-24 PROPERTIES PROTECTED STANDPIPE SYSTEMS 13E-25

assumed that there may be a major fire which will also require a number of hose streams for manual fire fighting. There may also be standard automatic sprinkler systems in the fire area which must also be supplied with lines from pumpers.

2-4 Fireground Operations Involving Outside Sprinklers.

2-4.1 The purpose of outside sprinkler systems is to prevent extension of fires to exposed properties. It is the duty of the officer in charge of the fire to see that these systems are used to fulfill their intended purpose. To do this it is necessary that the officer in charge know of the existence of the system and how it is supplied with water. Next to the saving of life, one of the first responsibilities of the fire department is the protection of exposures. The proper use of outside sprinklers helps the department to carry out this responsibility.

2-4.2 The officer in charge should ascertain as quickly as possible whether outside sprinklers are operating. If the system is manually operated, a fire fighter should be sent to the valve to open the valve immediately in the event the outside sprinklers are needed. In some cases there will be several valves controlling different exposed parts of the protected buildings and it is important to open the correct valves. Care must be taken to conserve water supply by shut- ting off the outside sprinklers when they are no longer needed.

2-4.3 The officer in charge should:

(a) Make certain that sufficient help is called to handle a serious exposure fire.

(b) Send a man to the proper control valve with orders to turn on the outside sprinklers as necessary.

(c) Order an engine company to pump into the fire department connection supplying the outside sprinklers.

( d ) Order men into the exposed buildings on each side to see that all windows are closed and that fire has not extended into the buildings concerned.

(e) If the exposure is severe, set up fire department lines in the exposed buildings using standpipe facilities if available.

(f) Sendm en to the roof to make certain that no part of the roof structure has ignited.

(g) Begin salvage operations in exposed buildings.

(h) Order outside sprinklers shut off and drained when no longer needed.

Chapter 3 Properties Protected by Standpipe Systems

3-1 General.

3-1.1 Many properties have standpipe systems serving fire hose outlets in various parts of one or more buildings. Standpipe systems of various types may be used by the fire department to place streams in service quickly in areas that cannot be reached conveniently with hose lines directly connected to pumpers or hydrants outside of buildings. Unfortunately, in some cases fire departments have ig- nored the availability of standpipe systems and have established no inspection or operational procedures for their effective use.

3-1.2 Complete details regarding standpipe systems appear in NFPA 14, Standard for the Installation of Standpipes and Hose Systems (see .4 ppendix /1). There are three classes of standpipe service. Class I is designed for use by fire departments and those trained in handling heavy fire streams (2 ~- inch hose and hose connections). Class II is designed for use primarily by the building occupants until the arrival of the fire department ( l ~ - i n c h hose and hose connections). Class III is designed for use by either fire departments and those trained in handling heavy hose streams (2~- inch hose) or by the building occupants (1 ~ - inch hose).

3-2 Inspection and Prefire Planning.

3-2.1 The procedure for fire department study of standpipe systems is in many ways similar to that of automatic sprinkler systems. The inspector must determine the source and reliability of water supply and follow the piping, noting the control valves. However, instead of sprinkler heads the system supplies outlets for hose streams.

3-2.2 Where the fire department is required to supply hose outlets several hundred feet from the fire department connection, plans must be made in advance to provide the required pressure and fire flow based upon the size, length of pipe, the maximum height of standpipe outlets and the number of streams that are to be supplied.

3-3 Water Supply for Fire Fighting.

3-3.1 Pressure gages are required for each discharge pipe from a fire pump or public main, at the pressure tank, at the air pump I,,d

1 3 E - 2 6 P R O P E R T I E S P R O T E C T E D

Figure 3-2.1. Suggested Inspection Form for Properties Having Fire Standpipe Systems.

Name of Plant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fire Inspection District No . . . . . . . . . . . . . .

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fire Alarm Code No . . . . . . . . . . . . . . . . . . . Description of Property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. of Stories . . . . . . . . Plant Official Responsible for Standpipe System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Phone . . . . . . . . . . . . . . . Type of Standpipe Systems:

First Aid Standpipe for Occupants . . . . . . . . . . . . . . No. of Risers . . . . . . . . . . . . . . - Size of Risers . . . . . . . . . . . . . . No. of Hose Outlets . . . . . . . . . . . . . . Location of

Valves Controlling Standpipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fire Dept. Standpipes . . . . . . . . No. of Risers . . . . . . . . Size of Risers . . . . . . . . . . . No. of Hose Outlets . . . . . . . . . . . . . . . . . Location of Valves Controlling Stand- pipes . . . . . . . . . . . . . . . . . . . . . . . ~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

W~iter Supplies to Standpipes: Gravity Tank . . . . . . . . . . . . . . . . . . . . . . . . Pressure Tank . . . . . . . . . . . . . . . . . . . . . . . .

Volume in Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - . . . Fire Pumps: Manual or Automatic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . Location . . . . . . . . . . . . . . . . . . . . . . . . .

Public Water Main . . . . . . . - . . . . . . . . Static Pressure . . . . . . . . . . . . . . . . . . . . . . . . Private Water Main . . . . . . . . . . . . . . . Static Pressure . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . gpm Available at . . . . . . . . . . . Residual Pressure at. Elevation Fire Department Connections:

Location of Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sta.ndpipe Supplied:

First Aid . . . . . . . . . . . . . . . . . . . . . . . . Fire Dept . . . . . . . . . . . . . . . . . . . . . . . . . Company Assigned to Pump into Standpipe System on First Alarm . . . . . . . . . . . .

Hydrant to be Used (normal procedure) Supplemental Pumper Supply Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hose Provided at Standpipe Outlets: Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Length . . . . . . . . . . . . . . . . . . . . . . . . . . . Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Condition . . . . . . . . . . . . . . . . . . . . > . . . .

Any Special Hose Threads or Adapters Provided? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Type of Nozzle Provided: Straight Stream . . . . . . . . . . . . . . . . Spray . . . . . . . . . . . . . . . . Are Standpipes Interconnected? Standpipe Waterflow Alarm Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remarks: Includes any pertinent special information that may affect fire depar tment

operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . / ,

' Inspected by. ' . . .Approved by . . . . . . . . . . . . . . . . . . Date'. . . . . . . . . .

STANDPIPE SYSTEMS 1 3 E - 2 7

Figure 3-3.2. Typical fire department standpipe connection showing 2V2-inch intakes which would be suppl ied by lines from one of the first responding pumpers .

s u p p l y i n g a p r e s s u r e t a n k , a n d a t t h e t o p o f e a c h r i s e r u n l e s s t h e r i s e r s a r e i n t e r c o n n e c t e d a t t h e t o p w h e r e a s i n g l e g a g e is s a t i s f a c t o r y . G a g e s m u s t h a v e s u i t a b l e d r ' a i n v a l v e s a n d b e p r o t e c t e d a g a i n s t f r e ez - i n g . T h e i n s p e c t o r s h o u l d n o t e t h e s t a t i c p r e s s u r e o n e a c h g a g e a n d a s c e r t a i n t h a t v a l v e s c o n t r o l l i n g f l o w to s t a n d p i p e s a r e o p e n . W h e r e p r e s s u r e f o r a s t a n d p i p e is f r o m a p r i v a t e f i r e p u m p , it m a y b e d e s i r a b l e to h a v e t h e p u m p s t a r t e d a n d o b s e r v e t h e p r e s s u r e a t t h e t o p o f t h e r i s e r .

3 - 3 . 2 W h e r e t h e r e is a f i r e d e p a r t m e n t c o n n e c t i o n it s h o u l d b e c lo se ly i n s p e c t e d to s ee t h a t it is f r e e o f o b s t r u c t i o n a n d to d e t e r m i n e t h e h o s e l a y o u t t h a t wil l b e n e c e s s a r y to p u m p i n t o t h e s y s t e m f r o m t h e n e a r e s t h y d r a n t . I f t h e c o n n e c t i o n h a s s c r e w - t y p e c a p s , t h e s e s h o u l d b e r e m o v e d a n d t h e t h r e a d s i n s p e c t e d to d e t e r m i n e t h a t t h e s e m a t c h t h e f i r e d e p a r t m e n t h o s e t h r e a d . T h e t h r e a d s m a y b e l u b r i c a t e d w i t h f l a k e d g r a p h i t e i f n e c e s s a r y . I f t h e f i r e d e p a r t m e n t c o n n e c t i o n is r e c e s s e d i n a b u i l d i n g wa l l , m a k e c e r t a i n t h a t h o s e c a n b e a t t a c h e d a n d p r o p e r l y t i g h t e n e d . S o m e f i r e d e p a r t m e n t s h a v e f o u n d it n e c e s s a r y (o c a r r y s p e c i a l f i t t i n g s f o r t h i s p u r p o s e .

3 - 3 . 3 N F P A 14, S tandard f o r Instal lat ion o f S tandp ipe and Hose Systems (see A p p e n d i x A) , r e q t i i r e s t h a t . w h e r e s t a n d p i p e s a r e c o n n e c t e d to p u b l i c w a t e r s u p p l i e s t h e r e p r e f e r a b l y s h o u l d b e a pos~ i n d i c a t o r v a l v e o f a p p r o v e d t y p e n o t less t h a n 4 0 f ee t ( 1 2 . 2 m ) f r o m t h e b u i l d i n g p r o t e c t e d o r a t l e a s t p l a c e d w h e r e it wil l b e r e a d i l y ac- c e s s i b l e a n d n o t s u b j e c t to d a m a g e . W h e r e p o s t i n d i c a t o r v a l v e s c a n - n o t b e u s e d , u n d e r g r o u n d g a t e s s h o u l d c o n f o r m to t h e a b o v e re- q u i r e m e n t s a s f a r a s p r a c t i c a b l e .

O


3-3.4 Fire department connections are required to have a check valve in the building or in a valve pit but must not have a gate v~lve which could prevent pumping water into the system. The check valve should have an automatic ball drip to drain the piping between the fire department connection and the check valve following use.

3-3.5 Each hose station should be inspected to see that the fire hose is in proper position on the racks and isproperly attached to the standpipe outlet. The nozzle should be attached to the hose and the orifice must be unobstructed. The inspector must look for signs of leakage near the hose Valve as moisture will hasten the deterioration of standpipe hose. If the hose has already deteriorated, prompt replacement should be.ordered.

3-$.6 The inspector should also make certain that the standpipe outlets are located so as to give' the desired coverage with the hose provided. New partitions may have been installed which make it impossible to reach some areas with hose streams. This considera- tion- should also be a routine part o f the fire inspector's review of building alteration plans submitted for a building permit. Generally, not over 100 feet (30.4 m) of 1H -inch or 2H -inch fire hose should be attached to the standpipe outlets.

3-3.7 NFPA 14, Standard for Installation of Standpipe and Hose Systems (see Appendix A), Galls. for limitation of pressure at standpipe outlets,.,including those with connected fire hose. These pressure regulating devices are generally preset at 100 pounds per square inch (6.9 bars)at the outlet. These devices are not adjustable for higher pressures unless.specified by the local fire department for Class I and Class III systems. In Older standpipe systems, pressure control was achieved by insetting a disc having a restricting orifice of the required Size." "Such discs generally were not provided where 2H-inch standpipe outlets were for fire department use only. However, for Class III (2H-inch hose outlets and 1H-inch hose) systems equipped with such restrictions, the inspector should determine if they adversely affect the supply available for fire department use.

3-3.8 When inspectinghose outlets, make certain that both the 1H-inch hose thread and the 2H-inch hose thread, where provided, fit the local fire department thread. Frequently, 1H-inch standpipe outlets have iron pipe thread instead of the coarser fire department thread. It may be found that the local fire hose will not fit the 2H-inch standpipe thread. Some cities require that the necessary adapters be wired to each outlet ready for emergency use. In other cities having this problem the adapters are carried on the fire department apparatus.

STANDPIPE SYSTEMS 1 3 E - 2 9

3-4 Fireground Operations Involving Standpipe Systems. $-4.1 Fire department operations in buildings with standpipe

systems designed to supply fire department hose streams require carefully planned operating procedures as do operations in buildings protected by automatic sprinklers. Many buildings will have both sprinkler systems and standpipes.

3-4.2 In some cases fire departments have failed to make use of fire department standpipes because no-positive procedures for standpipe operation had been adopted by the department concerned. In general, where a fire is not more than three or four Stories above street grade and where the building is of moderate size, the fastest and surest procedure is to advance fire department hose lines directly from the fire department apparatus to the seat of the fire using stairways, fire ladders, fire escapes and hose hoists as required. However, where fires occur on floors above the reach of ground or aerial ladders and where valuable time will be lost in stretching lines up stairways, standpipes should be utilized, and careful planning is necessary for successful operations.

3-4.3 Where standpipe systems are provided having fire department connections, it is important that lines from a pumper supplied by a public main be connected at once and charged to the pressure required to give the desired working pressure on the standpipe outlets to be used. Where there are several independent standpipes for fire department use in the fire area, each standpipe should be charged. Where a sprinkler fire department connection is also provided, it may be necessary to supply the standpipe connection by the pumper arriving next after the one used to supply the sprinklers.

3-4.4 Entrance pressure at the standpipe fire department connection should start at approximately:100 pounds per square inch (6.9 bars) to supply solid stream nozzles at elevations up to 100 feet (30.4 m~ and 150 pnl;nd~ (10 ~ bars) to ~,,nnlv , , - . . . . . . . . . . . . . r r '~ fire department spray nozzles requiring 100 pounds (6.9 bars) nozzle pressure. For elevations above 100 feet (30.4 m), 5 pounds per square inch (0.3 bars) should be added for each additional floor. The water head to be overcome in pumping vertically, termed "back pressure" by the fire service, is 43.3 pounds per 100 feet (9.8 bars/100 m).

(a) Fire department standpipe outli~ts are usually located in stair towers so that fire fighters can work from the stairway into the fire area. A basic rule in standpipe operations is to connect the fire department hose to an outlet a floor below the fire and advance the line up one flight of stairs. This is done so that an intense fire oh the "fire floor" will not drive fire fighters away from the standpipe connection and cause loss of water supply. Where additional lines are O


needed, connect ions can be m a d e to outlets at lower levels and ad- vanced up the stairway. However, the quan t i ty avai lable will be l imi ted to the amoun t that the fire d e p a r t m e n t pumpers or o ther sources of water supply are feeding into the s tandpipe . For example , one p u m p e r line into the s t andp ipe fire d e p a r t m e n t connect ion will provide one 2 ~ - i n c h line or two l ~ - i n c h lines in the fire area. In some cases the s t andp ipe m a y - b e loca ted on the exter ior of the bui ld ing , f requent ly ad jacen t to outs ide stairs or fire escapes.

(b) Ano the r rule in fire d e p a r t m e n t use of s tandpipes is never to rely on the pr ivate s t andp ipe hose tha t m a y be a t t ached to the s tandpipe . This hose may not be able to wi ths tand the pressures used to supply fire d e p a r t m e n t hose s t reams. Much of the s t andp ipe hose is of un l ined construct ion.

(c) Ano the r genera l rule in s t andp ipe opera t ions is to avoid use of bu i ld ing elevators because, du r ing a fire, power may fail and leave fire f ighters t r a p p e d between floors. T h e fire "fighting crew should proceed to the fire a rea on foot e i ther by stairway, fire l adde r or fire escape. W h e r e possible, it is well to p lan access routes that will not be i m p e d e d by the egress of bu i ld ing occupants .

(d) In s t andp ipe work the fire fighters must take their essential e q u i p m e n t with them, inc lud ing the following:

po r t ab l e rad io 100 feet (30.4 m) or more of hose of the desired size s t ra ight s t ream shut-off or combina t i on nozzle l ights spanners axe plas ter hook or pike pole b r ea th ing a p p a r a t u s wye connec t ion for 1 ~ - i n c h hose as requ i red coupl ing th read adap te r s as requi red .

(e) Some fire d e p a r t m e n t s in areas where s tandpipes are used f requent ly have a back harness for car ry ing two doughnu t rolls of l ~ - i n c h hose. W h e r e 2 ~ - i n c h hose is used f rom a s tandpipe , a shoulder hose car ry is genera l ly the most convenient with one m a n car ry ing each section of hose. T h e engine co mpa ny officer may car ry the nozzle and any a d a p t e r f i t t ings necessary. T r u c k c ompa ny or ladder men will car ry the forcible entry tools tha t may be needed. Somet imes it is necessary to force open a door or window from the s t andp ipe locat ion to reach the fire area.

3-4.5 T h e use of the p o r t a b l e rad io is almost essential in s tand- p ipe opera t ions on uppe r floors so as to m a i n t a i n Communicat ions w i t h the officer in charge of the fire on the g round level.

STANOI'IPE SYSTEMS 13E-31

3-4.6 Steps to be car r ied out by the officer in charge at a fire involving use of a fire d e p a r t m e n t s t andp ipe are:

(a) Locate the fire and de te rmine its extent and na ture .

(b) Orde r such add i t iona l help as may be necessary.

(c) Orde r p u m p e r to connect to s t andp ipe fire d e p a r t m e n t connection and ma in t a in r equ i red pressure but not less than 100 pounds per square inch (6.9 bars) at the fire d e p a r t m e n t connect ion. ,

(d) Where pr ivate water supplies serve the s tandpipe system, make cer ta in t.hat supply valves are open and pr ivate fire pumps , if any, are ope ra t ing proper ly .

(e) Orde r an officer to the fire a rea to direct the a t tack on the f i r e ,

(f) Orde r a l adde r or t ruck company with p roper tools to the fire area to m~ke cer ta in tha t occupants have escaped, make forcible entry, and vent i la te the rite. area.

(g) Order an engine c o m p a n y to proceed with hose and equip- men t to the floor below the fire, to connect to the s tandpipe and advance line to fire area:

(h) Establish radio communica t ions between fire floor and ground.

N O T E : ' F i r e fighters proceeding up stairs should observe all.hose outlet valves on lower floors to see that these are closed so tha t pressure will not be diver ted f rom the fire area.

o


Appendix A

This Appendix is not a part of this NFP/I document, but is included for information purposes only. ",

NFPA Siandards. This publication makes reference to the following NFPA documents and the year dates shown indicate the latest edition available. They are available from the National Fire Protection Association, 470 Atlantic Avenue, Boston, MA 02210.

(a) NFPA 13-1976, Standard for ihe Installation of Sprinkler Systems.

(b) NFPA 13A-1976, Recommended Practice for the Care and Maintenance of Sprinkler Systems.

(c) NFPA 14-1976, Standard for the Installation of Standpipe and Hose Systems.

(d) NFPA 20-1976, Standard for the Installation of Centrifugal Fire Pumps.

(e) NFPA 1901-1975, Standard for Automotive Fire Apparatus.

R E V I S I O N S T O N V P A 14 14-1

Part III

Revisions to the Standard for the Installation of

Standpipe and Hose Systems

NFPA 1 4 - 1 9 7 6

I. Section 1-6, 1.3, add " (2~- inch hose)" after "heavy hose streams" and "(1 1/~-inch hose)" after "building occupants."

_f

2. Section 1-8.2, revise as follows:

1-8.2 The water supply for a combined system shall comply with the requirements given in Section 5-3 or 5-5. When the building is completely sprinklered, the water supplies shall comply with 1-8.3. When the building is provided with partial sprinkler protection, the water supplies shall comply with 1-8.4.

3. Section 1-8.3, revise as follows."

1-8.3 For a completely sprinklered building, the water supply required in Section 5-3 or 5-5 may also serve the sprinkler system. Sprinkler demand need not be added.

Exception." Where the sprinkler system demand, including hose stream allowance as determined in NFPA 13, Standard for the Installation of Sprinkler Systems (see Appendix B), exceeds the supply required in Section 5-3 or 5-5, the larger of the two values shall be provided.

4. Add a new 1-8.4 to read as follows."

1-8.4 For a building equipped with partial automatic sprinkler protection, the sprinkler system demand, not including hose stream allowance, shall be added to the requirements given in Section " " ~-a or 5-5.

Exception: The authority having jurisdiction may modify this requirement based on local conditions.

5. Renumber 1-8.4as 1-8.5.

6. Renumber 1-8.5 as 1-&6.

7. Revise 2-1.6 to read as follows.

2-1.6 Where pumps supplying two or more zones are located at the same level, each zone shall have separate and direct supply Ol

14-2 C O M M I T T E E ON W A T E R E X T I N G U I S H I N G SYSTEMS

piping of a size not smaller than the riser which it scrves. Zones with two or more standpipes shall have at least two direct supply pipes of a size not 'smaller than the largest riser which it serves.

8. Section 2-7.8, in" the fourth line, delete "alternate" and add "auxiliary."

9. Section 3-4. 1, add " 2 ~ - i n c h "after "At least one."

10. Section 4-1, change title from "Location of Hose" to "General."

11. Revise 4-4.4 to read as follows:

4-4.4 Hose outlet threads shall conform to the American National Fire Hose Connection Screw Thread, as specified in NFPA 194, Screw Threads and Gaskets for Fire Hose Connections (see Appendix B).

Exception No. 1:. Where local hose coupling threads do ~zot conform to the American National Fire Hose Connection Thread, the authority having iurisdiction shall designate the threads to be used.

Exception No. 2: Where local hose couplings are of a type without threads, the authority having .jurisdiction shall designate the type of couplings to be used.

12. Section 4-5, revise title to read as follows:

4-5 Nozzles for lY2-inch Hose.

13. Section ,1-5. 1, revise to read as follows:

4-5.1 Nozzles shall be listed and approved.

14. Delete 5-2.5.

15. Renumber 5-2.6 as 5-2.5.

16. Section *5-3. 1, in the first line of the second paragraph, add "by Chapter 3" after "required."

17. Revise 5-6.8 to read as /ollows:

5-6.8 Hose coupling threads shall conform to the American National Fire Hose Connection Screw Thread, as specified in NFPA 194, Screw Threads and Gaskets for Fire Hose Connections (see Appendix B).

R E V I S I O N S TO N F P A 14 14-3

Exception No. 1: Where local hose coupling threads do not conform to . the American National Fire Hose Connection Thread, the authori O' having iurisdictiot~ shall designate the threads to be used.

Exception No. 2: Where local hose couplings are of a type without threads, the authority having .jurisdiction shall designate the type of coupling to be used.

18. Section 5-6.9 (b), revise the last sentence to read as follows:

If automatic sprinklers are also supplied by the hose connection, the sign or combination of signs shall indicate both designated services, e.g., "STANDPIPE AND A U T O S P K R , " or " A U T O - SPKR AND STANDPIPE."

19. Revise 6- 1.1 to read as follows:

6-1.1 Connections from gravity tanks (on buildings) and pressure tanks (on top floor or roof) shall be made to the top of the standpipe system. The size of such connections shall not be smaller than the standpipes which they serve.

Exception: Where the tanks are .used as a supply to standpipes in several buildings, or sections of a building, the connections shall be made at the base of the standpipes.

20. Revise *6-1.3 to read as follows:

"6-1.3 Connections 'from fire pumps and sources outside the building shall be large enough to deliver the full required water demand without excessive friction, loss.

21. Revise 6- 1.4 to read as follows:

6-1.4 Where two or more standpipes are installed in the same building or same section of a building, they shall be interconnected at the top and bottom. Check valves may be installed at the base of each riser to prevent c~rculation.

Exception: In building sections which are not continuous at the top floor, the top loop may be omitted.

21A. Section 6-2.3, Exception No. 2, reverse "post" and "indicator."

21B. Section 6-2.4, add a new sentence at the end to read as follows: "(See NFPA 2g, Standard for Outside Protection [see Appendix B].)"

22. Section 6-3. 1, in the first line add "made" after "be." In the fourth line delete "conform at least" and add "be at least equivalent," and in the sixth line add "system" before "working."

14-4 COMMITTEE ON WATER EXTINGUISHING SYSTEMS

2,3. Revise Section 6-4 to read as follows:

6-4 F i t t i ngs .

6-4.1 T y p e of F i t t i ngs .

6-4.1.1 Fi t t ings used in s t andp ipe systems shall be of the mate r ia l s listed in T a b l e 6-4.1.1 or in accordance with 6-4.1.2. T h e chemica l proper t ies , physical proper t ies and dimensions of mater ia l s listed in T a b l e 6-4.1.1 sti~illbe at least equiva lent to the s t andards ci ted in the table. Fi t t ings ,used in s tandpipe systems shall be des igned to wi ths tand- the system working pressures, but n o t less- than 175 psi (12.1 bars) cold water [125 psi (8.6 bars)] sa tu ra ted s team pressure. (See Appendix B.)

T a b l e 6-4.1. i

Material and Dimensions Standard

Cast Iron Cast Iron Screwed Fittings,

125 and 250 lb . . . . : . ; . . . . . . �9 . . . . . . . . ANSI B16.4 Cast Iron Pipe Flanges and

Flanged Fittings, 125 and 250 lb. . . . . . . . . . . . . ANSI Bl6.1

Malleable Iron Malleable Iron Screwed Fittings,

150 and 300 lb . . . . . : . . . . . . . . . . . . . . ANSI B16.3

Ductile Iron Gray-Iron and Ductile-Iron Fittings,

2 in. through 48 in. for Water and Other Liquids ANSI A21.10

Steel Factory-Made Wrought Steel

Buttweld Fittings . . . . . . . . . . . . . . . . . . ANSi Bi6.9 Buttwelding Ends for Pipe, Valves,

Flanges and Fittings . . . . . . . . . . . . . . . . . ANSI B16.25 Spec. for Piping Fittings of Wrought

Carbon Steel and Alloy Steel for Moderate and Elevated Temperatures . . . . . . . . . . . . . . ASTM A234

Steel Pipe Flanges and Flanged Fittings . . . . . . . . . ANSI B16.5 Forged Steel Fittings, Socket Welded

and Threaded . . . . . . . . . . . . . . . . . . . ANSI B16.11

Copper Wrought Copper and Bronze Solder-Joint

Pressure Fittings . . . . . . . . . . . . . . . . . . ANSI B16.22 Cast Bronze Solder Joint Pressure Fittings . . . . . . . . ANSI B16.18

NOTE: See Appendix B.

REVISIONS TO NFPA 14 14-5

6-4.1.2 O t h e r types of fitt ings m a y be used, but only those invest igated and listed for this service by a recognized testing and i n s p e c t i o n . a g e n c y l abo ra to ry and accep tab le to the au thor i ty having jur isdic t ion .

6-4.1.3 Fi t t ings used in s t andp ipe systems shall be extra heavy p a t t e r n where pressures exceed 175 psi (12.1 bars) .

Exception No. 1: Standard weight pattern cast iron fittings 2 inch size'and smaller may be used where pressures do not exceed 300 psi (20. 7 bars).

Exception No. 2: Standqrd weight pattern malleable iron fittings 6 inch size and smaller may be used where pressures do not exceed 300 psi (20. 7 bars).

Exception No. 3: Fittings may be used for system pressures up to the limits specified in listings by a nationally recognized testing laboratory.

6-4.1.4 W h e r e water pressures a re 175 to 300 psi (12.1 to 20.7 bars) the A N S I s tandards pe rmi t the use of s t andard wall p ipe and ext ra heavy valves. Unt i l pressure rat ings for valves are s tandard ized , the manufac tu r e r ' s ra t ings shall be observed.

24. Section 6-4.2, revise first sentence to read as follows:

6-4.2 All p ip ing shall be instal led by means of th readed or f langed fittings, flexible couplings or o ther app roved means.

25. Add a new 6-4.2. 1 to read as follows:

6-4.2.1 Cer t i f i ca t ion o f W e l d e r s a n d B r a z e r s . Welders or brazers shall be certified by con t rac to r as being qualif ied for weld ing a n d / o r b raz ing in accordance with the requ i rements of A S M E Boiler a n d Pressure Vessel Code, Section I X , Qual i f ica t ion S t a n d a r d for We l d ing and Brazing Procedures, Welders , Brazers, and Weld ing and Brazing Opera tors . (See Appendix B.)

20. Revise *6-7.1 to read as follows:

"6-7.1 W h e n requi red by the au thor i ty having jur isdic t ion, wate r flow a la rms shall be provided.

27. Section 7- 1.1, add a new sentence to the end of 7- 1.1 to read as follows: " T h e inside s t andp ipe p ip ing shall show no leakage. Refer to N F P A 24 for permissible leakage in unde rg round piping. (See Appendix B.)"

28. Delete 7-1.2.

29. Delete 7- 1.,3 and A-7- 1.3.

14-6 C O M M I T T E E ON W A T E R E X T I N G U I S H I N G SYSTEMS

30. Delete 7- 7.3. 7.

37. Renumber 7-7.4 as 7-1.2, 7-1.d. 1 as 7-1.2.7, 7-1.5 as 7-1.3, 7-1.6 as *7-1.d and A-7-1.6 as A-7-l .4.

32. In 7-1.5 (new 7-1.3), in the second line, delete everything after "be" and add "hydrostatically tested at 50 psi (3.4 bars) above the normal pressure at intervals of not less than five years."

33. In 7-1.6 (new 7-1.4), add a new sentence to read as follows:

"The standpipe system shall also be hydrostatically tested at 50 psi (3.4 bars) above the normal pressure."

34. Section *8- 7.7.1, in the ~r line delete "siamese" and add "and readily accessible."

35. Revise 8- 1.1.5 to read as follows:

8-1.1.5 Hose. connection threads shall conform to the American National Fire Hose Connection Screw Thread, as specified in NFPA 194, Screw Threads and Gaskets for Fire Hose Connec- tions. (See Appendix B.)

Exception No. 7: Where local hose coupling threads do not conform to the American National Fire Hose Connection Thread, the authority having iurisdiction shall designate the threads to be used.

Exception No. 2: Where local hose couplings are of a type without threads, the authority having jurisdiction shall designate the type of coupling to be used.

36. Delete A- 1-8. 3.

36A. In Figures A-2-7A, A-2-1B and A-2-1C, change "siamese" to "fire department connection."

37. In Figures A-2- 7B and A-2- 7C, change designation at left of drawings from " 8 " express riser" to "direct supply pipe."

38. Add a new A-5-3. 1 to read as follows:

A-5-3.1 If a water supply system.supplies more than one building or more than one fire area, the total supply may be reduced to 500 gpm (1893 l/min) for the first standpipe plus 250 gpm (946 l/min) for each additional standpipe in the building or fire area requiring the greatest number of standpipes.

R E V I S I O N S TO N F P A 14 14-7

39. Add a new A-6-7.1 to read as follows."

A-6-7.1 Audible alarms are normally located on the outside of the building. Approved electric gong bells, horns, or sirens inside the building or a combination inside and outside are sometimes available.

39A. Delete A-7- 1. l, except for last paragraph.

dO. Editorial Corrections:

(a) Change note under Tab, le 7-5 to read as follows:

For additional conversions and information, see ASTM E380 (see Appendix B).

(b) Throughout the standard, delete the dates of the N F P A publications and add "(See Appendix B. ) ."

(c) In Table 6-3. 1 delete all the dates for the standards and add at the bottom amote to read as follows: "(See Appendix B.) ."

41. Section 6-2. 3, in Exception No. 2, in the second line after "locations" change "and" to a comma.

NFPA NFPA

in Properties NFPA

Pumps. NFPA

tection. NFPA

42. Add a new Appendix B to read as follows:

Appendix B.

B-1 Reference Publications.

B-l-1 NFPA Standards. This publication makes reference to the following NFPA codes and standards and the year dates shown indicate the latest edition available. They are available from the National Fire Protection Association, 470 Atlantic Avenue, Boston, MA 02210.

13-1976, Standard for the Installation of Sprinkler Systems. 13E-1978, Recommendations for Fire Department Operations Protected by Sprinkler and Standpipe Systems. 20-1978, Standard for the Installation of Centrifugal Fire

22-1976, Standard for Water Tanks for Private Fire Pro-

24-1973, Standard for Outside Protection. NFPA 194-1974, Standard for Screw Threads and Gaskets for

Fire Hose Connections. NFPA 196-1974, Standard for Fire Hose. NFPA 198-1972, Standard for the Care of Fire Hose.

0

14-8 COMMITTEE ON WATER EXTINGUISHING SYSTEMS

B-l-2 ANSI Standards. This publication makes reference to the following ANSI standards and the year dates shown indicate the latest edition available. They are available from American National Standards Institute, Inc., 1430 Broadway, New York, NY 10018. ,

ANSI A21.10-1971, Gray-Iron and Ductile-Iron Fittings, 2 Inch Through d8 Inch for Water and Other Liquids (AWWA Cl10-71).

ANSI A21.51-1971, Ductile-Iron Pipe Centrifugally Cast, in Metal Molds or Sand-Lined Molds for Watkr or Other Liquids (AWWA C151-70).

ANSI B16A-1975, Cast Iro n Pipe Flanges and Flanged Fittings, Class 25, 125, 250 and 800.

ANSI B16.11-1973, Forged" Steel Fittings, Socket Welded and Threaded.

ANSI B16.18-1973, Cast Bronze Solder Joint Pressure Fittings. ANSI B16.22-1973, Wrought Copper and Bronze Solder-Joint

Pressure Fittings. ANSI B16.25-1972, Buttwelding Ends for Pipe, Valves, Flanges

and Fittings. ANSI B16.3-1971, Malleable Iron Screwed Fittings, 150 and

300 lb. ANSI B16.4-1971, Cast Iron Screwed Fittings, 125 and 250 lb. ANSI B16.5-1973, Steel Pipe Flanges and Flanged Fittings. ANSI B 16.9-1971, Factory-Made Wrought Steel Buttweld Fittings

iiSO-285). ANSI B36.10-1975, Welded and Seamless Wrought Steel Pipe

(ISO-64).

B-l-3 ASME Code. This' publication makes reference to the following ASME code and the year date shown indicates the latest edition available. It is available from the American Society of Mechanical Engineers, 345 East 47th St., New York, NY 10017.

ASME Boiler and Pressure Vessel Code I 1974.

B-l-4 ASTM Standards. This publication makes reference to the following ASTM standards and the year dates shown indica{e the latest edition available. They are available from the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.

ASTM A53-1976, Specifications for Welded and Seamless Pipe. ASTM A120-1976, Specifications for Black and Hot-Dipped Zinc

Coated (Galvanized) Welded and Seamless Steel Pipe for Ordinary Uses.

REVISIONS TO NFPA 14 14-9

ASTM A234-1976, Specifications for Piping, Fittings of lq'rought Carbon Steel Alloy Steel for Moderate and Elevated Temperatures.

�9 ASTM B75-1976, Specifications for Seamless Copper Tube. ASTM B88-1976, Specifications for Seamless Copper Hater Tube. ASTM B251-1975, Specifications for General Requirements .[or

Wrought Seamless Copper and Copper-Alloy Tube. ASTM E380-1976, Standard for Metric Practice.

B-l-5 AWS Standard. This publication makes reference to the following AWS standard and t h e y e a r date shown indicates tile latest edition available. It is available from the American Welding Society, 2501 N.W. 7th Street, Miami, FL 33125.

AWS A58-69, Brazing Filler Metal (Classification B Cu P-3 or B Cu P-4).

O

Report of the Committee on Water Extinguishing …WES-3 VOTE STATEMENT The report of the Committee...

Documents

Transcript of Report of the Committee on Water Extinguishing …WES-3 VOTE STATEMENT The report of the Committee...