Scanned by CamScanner

OWNER: NATIONAL FERTILIZER LIMITED WPS NO. : SD/001

DATE : 13.08.2016

DATE : 21.03.2017 REV. 0

TYPE ManualGroove Angle 370

JOINT DESIGN Root Face 1-2 mm

BACKING Root Gap 2.5-3.5 mm

BACKING MATERIAL

MATERIAL SPECTYPE OR GRADEP.NO.TO P.NO.THICKNESS RANGEPIPE DIA. RANGEOTHER GASES MIXTURE FLOW RATE

GTAW SHIELDING Argon 99.997% 12 -16 Lit/Min

SFA SPEC. 5.22 TRAILING -- -- --

AWS CLASS. R308LT1-5 BACKING -- -- --

F-NO 6

A-NO 8 CURRENT DC POLARITY DCEN

SIZE OF FILLER METAL 2.2

DEPOSITED WELD METAL THK.

POSITION OF GROOVE As per table

WELDING PROGRESSION String/Weave

POSITION OF FILLET NA

Multiple

PREHEAT TEMP. (Min.) Single

INTERPASS TEMP. (Max.) NA

NA

NA

SS WIRE BRUSHING

NO

CLASS DIA.TYPE AND POLARITY

AMP RANGE

ROOT GTAW R308LT1-5 2.2 DCEN 71-95 10-23 25-60

HOT PASS GTAW ER 308L 2.4 DCEN 80-105 10-15 83-103

FILL UP GTAW ER 308L 2.4 DCEN 110-140 15-21 76-126

FINAL GTAW ER 308L 2.4 DCEN 106-121 15-19 76-102

THIS WPS IS APPLICABLE FOR NFL-BHATINDA JOBS ONLY

FILLER METAL(QW-404)

PERCENT COMPOSITION

NA

PREPARED BY L&T

SIGNATURE :

NAME:

DATE :

OTHER

CONTACT TUBE TO WORK DISTANCE

GAS CUP SIZE

METHOD OF BACK GOUGING

TUNGSTEN SIZE

NA

10 DEGREE C

175 DEGREE C

OSCILLATION (Max.)

MULTI OR SINGLE PASS

7.38 mm (max)

PREHEAT(QW-406)

TECHNIQUE (QW-410)

THICKNESS RANGE FOR GROOVE

THICKNESS RANGE FOR FILLET

MODE OF METAL TRANSFER

WIRE FEED SPEED RANGE

LARSEN & TOUBRO LIMITED

5.9

ER 308L

NA

BASE METALS(QW(403)

TIME (Min.)

Single "V" BW

JOINTS(QW-402)

NIL

2.99 to 11.98 mmALL

GAS(QW-408)

NA

HEATING/COOLING RATEP8 GR 1 to P8 GR1

WELD LAYERS PROCES VOLT RANGEFILLER METAL

PREHEAT MAINTAINCE NA

POST HEATING (Min.) NAINITIAL & INTERPASS CLEANING

PEENING

All

DATE: 21.03.2017

QW-482 WELDING PROCEDURE SPECIFICATION ASME SEC.IX, BOILER & PRESSURE VESSEL CODE

GTAW

A 358 TP 304

TRAVEL SPEED RANGE

CURRENT

NANA

MULTIPLE OR SINGLE ELECTRODE

2.4 mm & EWCe-2

TRAVEL SPEED (mm / min.)

STRING OR WEAVE

NA

NIL

POST WELD HEAT TREATMENT (QW-407)TEMPERATURE RANGE

Uphill

NA

POSITION(QW-405)

6

8

VOLTS2.4

As per Table

4.6 mm (Max.)

As per TableAMPS

NA

ELECTRICAL CHARACTERISTICS (QW-409)

Format No.LT/AFC/NFL-B/PIPE/WPS/016, Rev-00

AMMONIA PLANT FEEDSTOCK CHANGEOVER PROJECT, NFL-BATHINDA

PDIL/ NFL

NA

APPROVED & CHECKED BY L&T

WPS No. : SD/001

WELDING PROCESS : GTAW

EPCC: LARSEN & TOUBRO LIMITED

PMC: PROJECT & DEVELOPEMENT INDIA LTD

SUPPORTING PQR No.: 10110-BOP-CERSF-L&T-PQR-11

TP 304