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IS 952 (1986, Reaffirmed 2005): Specification for Fognozzlefor Fire Brigade Use (First Revision). UDC 614.843.4 :621.647.3

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IS: 952 -1906 (Reaffirmed 2305)

Indian Standard SPECIFICATION FOR

FOGNOZZLE FOR FIRE BRIGADE USE

( First Revision) Second Reprint MAY 2009 (Including Amendment No. I)

UDC 614.843.4: 621.647.3

© Copyright 1987 BUR E A U OF I N D I AN STAN DAR D S MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

January 1987

AMENDMENT NO. 1 SEPTEMBER 1999 TO

IS 952: 1986 SPECIFICATION FOR FOG NOZZLE FOR FIRE BRIGADE USE

( First Revision)

(Page 6, c/ause.4.2.1 ) -Insert the following new clause:

'4.2.2 Hydros/atic Pressure Test - Each fogno2;zle shall be subjected to a i' hydrostatic pressure of 2.1 MN/n/ (21 kgf/cm2) by suita hIe adopters for a period

I!i., I of 2.5 minutes for the purpose of locating porosity in the casting and leakage.'

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(CED 22)

I :1

1 ,I

IS : 952 - 1986

Indian Standard SPECIFICATION FOR

FOGNOZZLE FOR FIRE BRIGADE USE

( First Revision)

Fire Fighting Sectional Committee, BDC 22

Chairman Representing Cujarat Electricity Board, Vadodara

Ministry of Defence ( DCI )

SHm C. B. MENON A1embers

LT-COL V. R. BANAHATI SHRI S. R. BANSAL Steel Authority of India Ltd ( Bokaro Steel Plant ),

Bokaro Steel City SHm B. L. CHAUDHltY Oil and Natural Gas Commission, Dehra Dun

SnRI B. K. SIPPY ( Alternate) SIlRI K. K. DAS GUPTA West Bengal Fire Services,

DEPUTY INSPEGTOR (RPSF)

West Bengal, Calcutta GENERAL Ministry of Railways

ASSISTANT SECUltlTY OFFICER ( FIRE ), NORTHEl~N RAILWAY

Government of

( Alternate) DEPUTY INSPECTOR

( FIIlE) GENERAl. Central Industrial Security Force (Ministry of

Home Affairs ), New Delhi ASSlSTIIN'l' INSPECTOR GENERAl.

( FIRE) ( Alternate) SRRI S. M. DESAI State Bank of India, Bombay Slllt! S. K. DIlERI Municipal Corporation of Delhi (Delhi Fire

Service ), Delhi SHm R. K. BHARDW AJ ( Alternate)

SURI R. R. DHonr.EY Bhabha Atomic Research Centre, Bombay Dumc1'oR Home Department Fire Service), Government

DEPUTY DmEC'I'OH ( Alternate) DIRECTOR GENERAL OF FIRE

SEHVICES DEPU'ry DIRECTOR (Film

SERVICES) ( Alternate) FIRE ADVISER

of Tamil Nadu, Madras

Home (Police) Department, Andhra Pradesh, Hyderabad

Ministry of Home Affairs

Government of

SHRI J. S. JAMSHEDJ~

SHme. GNANRAJ ( Alte~nate )

Steelagl' Industries Limited (Minimax Division), Bombay

( Continued on page 2 )

© Copyright 1987 BUREAU OF INDIAN STANDARDS

This publication is protected under the India/l Copyright Act ( XIV of 1957) and reproduction in wbole or in part by any means except with written permission of the publisher shall be deemed to be an infrjngement of copyright under the said Act.

IS: 952 - 1986

( Continued from page I )

Representing SHRI P. KHANNA SHRI S. N. KUNDU MANAGING DIREOl'OR

Jayashree Textiles and Industries, Rishra Fire and Safety Appliances Co, Calcutta Avon Services ( Production and Agencies) Pvt Ltd.

Bombay TECHNICAL EXECUTIVE ( Altlmat, )

SHIH P. N. MEHROl'RA The Institution of Fire Engineers (India), New Delhi SHRI B. R. MEHTA ( Alternate)

BRIG S. A. MOHILE Ministry of Defence ( R&D) SHRI A. K. SURI ( Alternat, )

SHRI M. MUKHERJI

SHRI C. D. SHARMA ( Alternate)

Steel Authority of India Ltd (Rourkela Steel Plant), Rourkela

SHRI V. B. NIKAM Municipal Corporation of Greater Bombay ( Bombay Fire Brigade), Bombay

SHRI H. M. SABADRA Reliable ( Fire Protection) Industries, Bombay SURl P. H. SEl'HNA Kooverji Devshi and Co Pvt Ltd, Bombay

SRRI N. T. PANJWANI ( Alternate) SHRI R. C. SHARM;

IS : 9'52 - 1986

Indian Standard SPECIFICATION FOR

FOGNOZZLE FOR FIRE BRIGADE USE

( First Revision)

O. FOR E WORD

0.1 This Indian Standard ( First Revision) was adopted by the Indian Standards Institution on 30 June 1986, after the draft finalized by the Fire Fighting Sectional Committee had been approved by the Civil Engineering Division Council. .

0.2 Fognozzle is a type of hand-controlled branch in which the operator can apply water to a heated surface of fire in the form of either a fog (fine mist) or a jet. The added advantage over other hand-controlled branch is that water fog affects uniform cooling of the surface over which it is applied, the cooling effect is maximum and the water can be con-served. The throw from a fognozzle is considerably reduced when it is used for the application of fog. If necessary, the operator can use an extension applicator, carrying a fog-head at its end, which can be fitted to the fognozzle.

0.3 While using the fog nozzle, great care shall always be taken regarding operation of hand-controls, particularly when shutting off. This shall be done gradually, as otherwise it may easily cause serious damage to hose and may also be a source of danger to the branch man and others in the vicinity.

0.4 This standard was first published in 1969. This revision has been prepared so as to give flexibility in the design covering essential dimen-sions and keeping requirements based on performance requirement. The present design is based on design developed so far.

0.5 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the' result of a test or analysis, shall be rounded off in accord-ance with IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

*Rules for rounding off numerical values ( revised).

3

IS ; 952 ~ 1986

1. SCOPE

1.1 This standard lays down the l'equirements regarding material, shape, construction and performance tests for fognozzle for fire brigade· use.

2. MATERIALS

2.1 Castings and Forgings - Castings and forgings shall be made of any of the materials given in 2.1.1 and 2.1.2.

2.1.1 Copper Alloys - Copper alloys used for castings or forgings shall conform to the requirements given below:

a) Sand castings Grade LTD 2 of IS : 318-1981* or Grade HTB 1 of IS: 304-1981t

b) Die castings Grade 3 of IS : 292-1983t c) Hot forgings Grade I of IS: 291:-1977§ d) Gravity die castings IS : 1264-1981/1

2.1.2 Aluminium alloys used for castings shall conform to Designation 4450,4425 and 4600 of IS : 617-1975~.

2.2 Spring - The phosphor bronze wire used for the spring to be used in case of copper alloy couplings shall conform to IS : 7608-1975** and stainless steel wire used for both types shall conform to IS : 6528-1972tt.

2.3 Washer - Washer shall conform to IS : 937-1981t:.

2.4 Extension Applicator - It shall be of aluminium alloy tube. conforming to IS : 738-1977§§.

3. SHAPE AND DIMENSIONS

3.1 The typical shape and essential dimensi.ons of the fognozzle shall be as given in Fig. 1. The length of applicator, if used, shall not be less than 1 '75 m ( along central line ) and nozzle end shall have a bend of 90 to 100°. The threads at the two ends shall have a length of not less than 20 mm and shaH be such as to suit insertion on the body and fitting of nozzle .

• Specification for leaded tin bronze ingots and castings ( second revision ). tSpecification for higb tensile brass ingots and castings ( second revision ). tSpecification for leaded brass ingots and castings ( second revision ). §Specification for naval brass rods and sections ( suitable for machining and forging)

( second revision ). II Specification for brass gravity die castings ingots and castings ( second revision). "jfSpecification for aluminium and aluminium alloy ingots and castings for general

engineering purposes ( second revision) • •• Specification for phosphor bronze wires (for general engineering purposes ). ttSpecification for stainless stp!'l wire. ttSpecification for washers for water fittings for fire fighting purposes ( second revision ). §§Specification for wrought aluminium and aluminium alloy drawn tube for general

engineering purposes ( second revision). 4

(JI

11-30:!:·2

THREADS AS PER 15:264 ..

210 t2

GENERAL TOLERANCE ±O'5 All dimensions in miIlimetres.

FIG. 1 DETAILS FOR FOGNOZZLE

Fil

IS : 952 • 1986

4. PERFORMANqE' REQ.UIREMENTS

4.1 The fognozzle head of the fognozzle shall have a flow not less than 225 l/min and jet head of thefognozzle shall have a flow of not less than 400 l/min at a pressure of 7 kgf/cm2 at the inlet of the fognozzle. If the equipment is with applicator, an arlditional test shall also be conducted with applicator attached to the fog-head for the requirement of the fog. 4.2 The fog-head on the fognozzle shall produce a cone (see 4.2.1) of high velocity fog comprising of finely atomised droplets of uniform size; at an operating pressure of 0'7 MN/mm2 (7 kgf/cm2 ). The discharge pattern of the fog shall be such that no pockets are left while it is being used on an inflammable liquid surface.

4.2.1 The angle of the cone of fog produced shall not be less than 90" and not marc than 1200 at the apex. 4.3 The horizontal reach of the fog pattern shall not be less than 6 m from the fog-head on the fognozzle and not less than 4'5 m fiom the fog-head on the extension applicator when operating at a pressure of 0'7 MN/mm2 ( 7 kgfjcm2 ) in still air.

5. WORKMANSHIP AND FINISH

5.1 All parts shall be of good workmanship and finish and shall be free from burrs and sharp edges. All castings shall be clean and sound and free from plugging, welding or any repaired defects.

6. MARKING

6.1 Each fognozzle with its applicator shall be clearly and permanently marked with the following information:

a) Manufacturer's name or trade-mark; b) Year of manufacture; and c) The length of applicator, if provided.

6.1.1 The product may also be marked with Standard mark .. 6 •. 2 The use of the Standard Mark is governed by the provisions of the

Bureau of Indian Standards Act, 1986 and the Rules and Regulations made thereunder. The details of conditions under which the licence for the use of Standard Mark may be granted to manufactureis or producers may be obtained from the Bureau of Indian Standards.

7. CRITERIA FOR CONFORMITY

7.1 Each fognozzle with its applicator shall be checked for the require-ments given in this standard.

6

IS : 952 - 1986

< Continued from pag, 2 )

Water Fittings for Fire Fighting Purposes Subcommittee, BDC 22 :

Conv,nlr SHRI D. D. PURANDARE

Representing Ministry of Home Affairs ( CISF)

M,mbers Vr-COL V. R. BANAHATI Ministry of Defence ( DGI ) SHRI J. K. CHAKRABORTY Tariff Advisory Committee, Bombay

SHR! V. KHURANA ( Alt"nate ) SHRI S: K. DHERI Municipal Corporation of Delhi (Delhi Fire

Service ), Delhi SHRI R. K. BHARDWAJ (Alternate)

FIRB ADVISER Ministry of Home Affairs SHRI P. N. MEImOTRA The Institution of Fire Engineers ( India ),

New Delhi SHRl B. R. MEHTA ( Alternat, )

SHRI V. B. NIKAM Municipal Corporation of Greater Bombay, Bombay SHRI M. R. KAMA'!' Mather & Platt (I) Ltd, Bombay. .

SHRl K. R. EASW AllAN ( Alternate) SHRI P. KHAN;NA Jayashree Textiles & Industries, Rishra BinG S. A. MOHILE Ministry of Defence ( R&D)

SHRl A. K. SUIU ( Alternate) . SHR! H. V. RAO Engineers India Ltd, New Delhi

SRR! K. V. BHARDWAJ (Alternate) SHRY P. H. SETHNA . Kooverji Devshi & Co Pvt Ltd, Bombay

SRBI N. T. PANJWAPd AllICfJ/!!-

GMGIPN-76 BISIND/09-'100 Copies

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