Pump House Piping-17

8/9/2019 Pump House Piping-17

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LARSEN & TOUBRO LIMITED - ECC DIVISION, NCD-5 , MEHSANA

Job Procedure For Pump House Piping

Job Procedure No WI/EXE/8.2.3/ST/JP-17, Rev 0

Index

Sl. No. Page No.

Index

Description Formats

1 Scope 2

2 Reference 2

3 Method 2-4

o erance

5 Documentation 4

5.1 ITP 5 WI/EXE/8.2.3/ST/ITP-16, Rev 0

5.2 Formats 6 WI/EXE/8.2.3/ST/F-16A, Rev 0

7 WI/EXE/8.2.3/ST/F-16B, Rev 0


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4.5.5

On co

pletion of each run craters,

elding irregularities, slag etc. shall be re

o

ed b

grinding or chiseling

etc.For pipes of all thickness of

& abo e, the ends to be elded shall secured in position ith the aid ofcla

ps or direct tack

elding to

aintain perfect align

ent. Te

porar

eld attach

ents of co

patible

aterial

a be used to align & reduce the

is

atch etc. at joints.

fter elding the attach

ents shall be cut off b

grinding

ith out causing an

da

age to pipe surface. Te

porar

attach

ents

ight be

elded b

tack

elder

qualified b site

person. irect tack elds shall be

ade onl b qualified elders using appro ed PS.

Tack

elds

hich are to incor orated in the final

eld shall carefull

be ins ected for cracks etc. and the

3 tacks For pipe size of 2 1/2" dia & belo

4 tacks For pipe size of 3" to 12" dia

tacks For pipe size of 14" & abo e

In general gal anised piping shall ha e threads for required to drain cooling ater fro

pu

ps or in sanitar

ork threads on fittings,

al

es etc.Threads shall be clean cut,

ithout an

burrs or stripping and the ends shall

be rea

ed. Threading of pipes shall be done preferabl after bending, forgoing or heat treating operations.pipes

shall be done preferabl after bending, forgoing or heat treating operations. uring asse

bl of threaded joints,

all threads of pipes and fittings shall be thoroughl

cleaned of cuttings, dirt, oil or an

other foreign

atter. The

ale threads shall be coated

ith thread sealant and the joint tightened sufficientl for the threads to size and

gi

e a leak proof joint.

.

defecti e tacks

ust be re

o ed. The

ini

u

No. Of tacks shall be as follo s.

4.6 Scre

ed Piping

In general gal anised piping shall ha e threads for required to drain cooling ater fro

pu

ps or in sanitar

ork threads on fittings,

al

es etc.Threads shall be clean cut,

ithout an

burrs or stripping and the ends shall

be rea

ed. Threading of pipes shall be done preferabl after bending, forgoing or heat treating operations.pipes

sh

all be done preferabl after bending, forgoing or heat treating operations. uring asse

bl of threaded joints,

all threads of pipes and fittings shall be thoroughl

cleaned of cuttings, dirt, oil or an

other foreign

atter. The

ale threads shall be coated ith thread sealant and the joint tightened sufficientl for the threads to size and

gi

e a leak proof joint.

ll flange facings shall be true and perpendicular to the a

is of pipe to

hich the

are attached. Flanged bolt

holes shall straddle the nor

al center lines unless different orientation is sho n in the dra ing.

.

4.8 Branch Connections

ll flange facings shall be true and perpendicular to the a

is of pipe to

hich the

are attached. Flanged bolt

holes shall straddle the nor

al center lines unless different orientation is sho

n in the dra ing.

The specific application of elded

iter bends and fabricated reducers shall be go erned b the Piping

aterial

Specifications. Prefabricated

iters shall be t

pe as per Standard practise. Reducers, if required, shall be

fabricated as per directions of

I

.

ranch connections shall be as indicated in the piping

aterial specifications. For end preparation,align

ent,

spacing, fit-up and

elding of branch connections refer

elding specifications. Te

plates or la

out shall be used

here er required to ensure accurate cutting and proper fit-up.Re-inforce

ent pads shall be pro ided 1.

here

er indicated in dra

ings/specifications etc.

.

4.10 Cutting and Trimming of Standard Fittings & Pipes

The specific application of

elded

iter bends and fabricated reducers shall be go erned b the Piping

aterial

Specifications. Prefabricated

iters shall be t

pe as per Standard practise. Reducers, if required, shall be

fabricated as per directions of

I .

4.10 Cutting and Trimming of Standard Fittings & Pipes

4 11 Shop Fabrication / Prefabrication

o

ponents like pipes, elbo

s, couplings, half-couplings etc. shall be cut/tri

ed/edge prepared

here

er

required to

eet fabrication and erection require

ents, as per dra ings.


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5.3 Flange Connections

hile fitting up ating flanges, care shall be e

ercised to properl

align the pipes and to check the flanges for

trueness, so that faces of the flanges can be pulled together,!

ithout inducing an

stresses in the pipes and the

"

equip

ent nozzles."

tra care shall be taken for flange connections to pu

ps,co

pressors, air coolers etc. The

flange connections to these equip ents shall be checked for isaligne tn, e

cessi # e gap etc. after the final

align

ent of the equip

ent is o#

er. The joint shall be

ade up after obtaining appro#

al of$ "

I % /G

SS&

.Te porar

protecti # e co# ers shall be retained on all flange connections of pu ps,

turbines,co

pressors and other si

ilar equip

ents, until the piping is finall

connected, so as to a#

oid an

!

!

#

foreign aterial fro entering these equip ents.The asse bl

of a flange, joint shall be done in such a !

a

that

the gasket bet!

een these flange faces is unifor

l

co

pressed. To achie#

e this the bolts shall be tightened in a

proper sequence.'

ll bolts shall e

tend co pletel

through their nuts but not ore than 1/4".Steel to$

.I. flange

joints shall be

ade up!

ith e

tre

e care, tightening the bolts unifor

l

after bringing

an atera a gn

ent ange us!

t gas ets!

t accurate pattern.

5.(

Vents an)

Drains

High pint#

ents and lo!

point drains shall be pro#

ided as per the instructions of"

I%

, e#

en if these are not sho!

n

in the dra ! in s. The details of # ents and drains shall be as er i in aterial s ecifications / ob standards.

5.5 Valves

!

.#

.

Val # es shall be installed ! ith spindle/actuator orientation/position as sho ! n in the la

out dra ! ings. In case of

an

difficult

in doing this or if the spindle orientation/position is not sho!

n in the dra!

ings, the G

SS&

/$ "

I%

,

shall be consulted and ! ork done as per his instructions.$

are shall be e

ercised to ensure that globe # al# es,

5.6 Instruments

#

al#

es,rota

eters, orifice f lange asse

bl

,#

enturi

eters, flo!

eters etc. shall f ro

part of piping erection

check#

al#

es and other uni-directional#

al#

es are installed!

ith the "Flo!

direction arro!

" on the#

al#

e bod

pointing in the correct direction.

! ork.Fabrication and erection of piping upto f irst block # al# e/nozzle/flange for installation of offline Instru ents

for

easure

ent of le#

el, pressure, te

perature, f lo!

etc. shall also fro

part of piping construction!

ork. The

li its of piping and instru entation ! ork ! ill be sho ! n in dra ! ings / standards / specifications. Orientations /

locations of take-offs for te

perature, pressure flo!

, le#

el connections etc. sho!

n in dra!

ings shall be

6.0 Pipe Supports

.

Pipe supports are designed and located to effecti # el

sustain the !

eight and ther al effects of the piping s

ste

and to pre#

ent its#

ibrations.%

ocation and design of pipe supports!

ill be sho!

n in dra!

ings , Ho!

e#

er, an

e

tra supports desired b

TPI shall also be installed.

'

long!

ith piping spool erection0

align

ent, pipe

#'

ll restraints ha # e been installed correctl

.

supporting shall also be done. The follo !

ing points shall be checked after installation, ! ith"

I% and necessar

confir

ation in!

riting obtained certif

ing that :


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LARSEN & TOUBRO LIMITED - ECC DIVISION, NCD-5, MEHSANA

Inspection & Test Plan For: PUMP HOUSE PIPING

Inspection & Test Plan No : WI/EXE/8.2.3/ST/ITP-17, Rev 0

INSPECTION & TEST PLAN

L&T CEIL GWSS

1 WPS / PQR Review Approved WPS Regular WPS/PQRWI/EXE/8.2.3/PL-

04A,04C Rev 0 R R R

2Welder's performance qualification

Review Approval WQR Regular WQRWI/EXE/8.2.3/PL-

15A,15B Rev 0 R R R

Reference

DocumentFormat of Record

AgencySl.

No.

Component /

ProcessNature of Check / Test

Method of

Check

Acceptable

Tolerance

Quantum

of Check

3

Material Test Certificate for pump

house of main components ReviewAs per specification

RegularMRIR

WI/EXE/8.2.3/PL-17,Rev

0 R R R

4

Weld consumable Manufacturer

Batch Test certificates ReviewAs per specification

RegularBTC Manufactrurer test

certificate R R R

5Weld joint Fit - up & dimension

check

Visual/Measur

ment Approved drawing 100%

Approved

drawingWI/EXE/8.2.3/ST/F-17A,

Rev 0 C RM RM

WI/EXE/8.2.3/ST/F-17A,

Fabrication

and Erection

of piping work

6 Visual As per WPS 100% Rev 0 C RM RM

7Fabrication of fittings Measurment + and - 5 mm 100%

DrawingWI/EXE/8.2.3/ST/F-17A,

Rev 0 W RM RM

8 Erection of Piping as per drawing Visual in level +/- 10mm 100% DrawingWI/EXE/8.2.3/ST/F-17B,

Rev 0 C RM RM

9Installation checklist of Pipe supports Visual

As per approved

drawing 100%Drawing

WI/EXE/8.2.3/ST/F-17B,

Rev 0 C C C

at station.

10Hydro Test/ commissioning Visual As per Procedure 100%

Tender Final Report W W W

Legend

W - Witness (100% Inspection) RM- Random (10% Inspection) R - Review Documents C-Check (Visualy 100% )

0 22/11/05 For review & approval

Rev Date Revisions Prepared By L&T Checked by CEIL Reviewed and Approved b


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OWNER GWSSB-Mehsana LOCATION:- REPORT NO:-

LARSEN & TOUBRO LIMITED - ECC DIVISION, NCD-5 JOB

FIT - UP & WELD VISUAL REPORT FOR STATION PIPING

CONSULTANT Certification Engineers International Ltd. PROJECT:- DATE:-

CONTRACTOR Larsen & Toubro Ltd - ECC Division

DIA

THICK

Sl. NO. DRAWING NO REMARKWELD

VISUALJOINT NOLOCATION /AREA

WELDER

ID

MATERIAL

CHECK

TYPE OF

JOINT

FIT UP

CHECK

DIMENSIO

N CHECK

WPS

NO

gend:- BW - Butt weld; SW- Socket weld; FW - Fillet weld; BR - Branch weld

FOR CEIL/GWSSBFOR L&T

Format No.:WI/EXE/8.2.3/ST/F-17A, Rev 0

FOR CEIL/GWSSBFOR L&T


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OWNER GWSSB-Mehsana REPORT NO:

CONSULTANT Certification Engineers International Ltd. DATE:

CONTRACTOR Larsen & Toubro Ltd - ECC Construction Group LOCATION:

LARSEN & TOUBRO LIMITED - ECC DIVISION, NCD-5 JOBField Installation check list of Station Piping prior to pressure testing / commissioning

Rev. Rev.

L&T CEIL/GWSSB L&T CEIL/GWSSB

1 Installation checked as per P&ID 7 Seal welding screwed connections ( if required )

P & ID Nos.

Items to Check Items to Check

GAD No. / Isometric No.

Sl.No

Checked Sl.No.

Checked

2 Installation checked as per Isometric 8 Vents, drains, reinforcing pads

9 Removal of temporary erection cleats, cleaning etc

3 Installation checked as per Piping Plan 10 Test limits verified at site

4 Isometric / Sketch marked with: 11 Supports

a) Weld Nos. ( as made ) a) Correct types / Dimensions

b) As built Dimensions b) Guides

c es m c ng5 Valve ( Incl. Control and Safety valves ) d) Fixed point ( Anchor )

a) Type e) Shoes, Special supports ( if any )

b) Rating f) Support welding

c) Bolting / length / type 12 NDT Completed ( Radiography / UT / PT )

d) Gaskets 13 Check removal & blinding-off of:

e) Facing a) Control, Safety and Check valves

f) Flow Direction b) In line instruments

6 Flanges c) Others:

a) Bolting length / type 14 Check installation of :

b) Gaskets a) Temporary blinds

c) Facing / Rating b) Temporary strainers

d) Orifice type, taps in right position c) others

Remarks ( if any )

The installation is checked as per above and found satisfactory. System released for hydrotesting / commissioning.

______________ _______________

Format No :WI/EXE/8 2 3/ST/F-17B Rev 0

For L&T For CEIL/GWSSB

Format No :WI/EXE/8 2 3/ST/F-17B Rev 0

Pump House Piping-17

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