PWPS -GTSM-73 REV-A

7/30/2019 PWPS -GTSM-73 REV-A

1/5

WELDING PROCEDURE SPECIFICATION No.

REVISION No. A DATE SUPORTING PQR No.(S)

WELDING PROCESS TYPE MANUAL

JOINTS (QW-402) DETAILS

JOINT DESIGN SEE SKETCH.

BACKING Yes for fillet weld / No for single welded groove weld

Backing Material (TYPE )

( ) METAL - Weld metal or Base metal

( ) NONMETALLIC

( ) NONFUSING METAL

( ) OTHER 16" Dia

BASE METALS (QW-403)

P- No. 1 GROUP No. 1& 2 TO P-No. 1 GROUP No. 1& 2

OR

SPECIFICATION TYPE AND GRADE

TO SPECIFICATION TYPE AND GRADE

OR

CHEM. ANALYSIS AND MECH. PROP.

TO CHEM. ANALYSIS AND MECH. PROP.

THICKNESS RANGE

BASE METAL GROOVE FILLET ALL

PIPE DIA. RANGE GROOVE FILLET ALL

OTHER

FILLER METALS (QW-404)

SPEC No .(SFA) 5.18 5.5

AWS No. (CLASS) ER 70S-2 E 7018 H4R

F-No. 6 4

A-No. 1 1

SIZE OF FILLER METALS 3.2/4.0/5.0 mm

WELD METAL

THICKNESS RANGE :

GROOVE. up to 6 mm up to 55.92 mm

FILLET ALL ALL

ELECTRODE FLUX (CLASS) N/A N/A

FILLER METAL PRODUCT FORM Solid

FLUX TRADE NAME N/A N/ACONSUMABLE INSERT NONE NONE

OTHER N/A N/A

Wara Pressure Maintenance Project (WPMP)

Contract No : 11050146

PRELIMINARY WELDING

PROCEDURE SPECIFICATION(Sec-IX)

5 - 61.92 mm.

ALL

N/A

API 5L Gr B/SA 106 GrB /A234/A105 OR EQUIVALENT


GTAW SMAW

2.4 mm

Bare Solid

HOT-pWPS-GTSM--073

18-Dec-12

HOT -PQR-065

(to be qualified)

No backing strip for pipe butt weld

GTAW + SMAW

30.96mm Thk

N/A

35 2.5

2.0-4.0mm 1.60.8mm


2/5

REV.

POSITIONS (QW-405 ) POSTWELD HEAT TREATMENT (QW- 407)

POSITION (S) OF GROOVE ALL Temperature range

WELDING PROGRESSION UP/DOWN : Uphill HOLDING Time Min 1hrPOSITION (S) OF FILLET ALL Controlled Heating Rate ( Max / Hour ) 150 / hr

Controlled Cooling Rate ( Max / Hour ) 150 C / hr

GAS (QW-408)

PREHEAT (QW-406) PERCENT COMPOSITION

PREHEAT TEMP. MIN. . 79C GAS (ES) MIXTURE FLOW RATE

INTERPASS TEMP. MAX. 250 C

METHOD ARGON

INSPECTION METHOD TRAILING N/A

BACKING N/A

ELECTRICAL CHARACTERISTICS ( QW-409 )

CURRENT AC OR DC DC POLARITY

AMPS (RANGE ) SEE TABLE VOLTS (RANGE)

TUNGSTEN ELECTRODE SIZE AND TYPE

MODE OF METAL TRANSFER FOR GMAW N/A

ELECTRODE WIRE FEED SPEED RANGE N/A

TECHNIQUE ( QW-410 )

STRING OR WEAVE BEAD BOTH

ORIFICE OR GAS CUP SIZE No 5 to No 8

INITIAL AND INTERPASS CLEANING ( BRUSHING, GRINDING, ETC.) By Wire Brushing /and Grinding

METHOD OF BACK GOUGING NA

OSCILLATION NA

CONTACT TUBE TO WORK DISTANCE N/A

MULTIPLE OR SINGLE PASS (PER SIDE ) MULTIPLE

MULTIPLE OR SINGLE ELECTRODES SINGLE

TRAVEL SPEED (RANGE )

PEENING NONE

WELD FILLER METAL CURRENT

LAYER RANGE

POLARITY RANGE

ER70S-2

ER70S-2

1.04-1.5

SMAW E7018H4R 3.2 mm DCEP 82-120 120-180 0.98-1.12

26-304 SMAW E7018H4R 5.0 mm DCEP 100-200

3

NOTE

2

1.08-1.32

0.99-1.3395-115

2.4mm

mm/min

Heat Iuput

(KJ/mm)

APPROVALS HOTECC GS E & C COMPANY

2.4 mm EWTH-2

1

NAME

DATE

SIGNATURE

N/AN/A

150-240

24-28

TRAVEL

SEE TABLE

a) Material thickness less than 1 in : Min 1 hr

b) Material thickness 1 in and over : Holding time will be multiplied with 2.4 with thickness (Min 1 1/2 hour)

593-649C (t: over 20.0 mm)

PROCESS

TYPE AMPERS

Heating Torch with propane gas

Tempil stick / Thermometer

SHIELDING

90-110

8-11 46-57

See Table

9-11

GTAW

CLASS DIAMETER

DCENGTAW

2.4mm

HOT-pWPS-GTSM-073

10-15LPM

N/A

A

45-55

SPEED

GTAW-EN / SMAW EP

100-140

1.58-1.74

DCEN

VOLT

RANGE

99%

24-28

N/A

5 E7018H4RSMAW 4.0 mm DCEP 110-145


3/5

QEWWW


4/5

WELDING PROCEDURE SPECIFICATION No.

REVISION No. A DATE SUPORTING PQR No.(S)

WELDING PROCESS TYPE MANUAL

JOINTS (QW-402) DETAILS

JOINT DESIGN SEE SKETCH.

BACKING Yes for fillet weld / No for single welded groove weld

Backing Material (TYPE )

( ) METAL - Weld metal or Base metal

( ) NONMETALLIC

( ) NONFUSING METAL( ) OTHER 18" Dia

BASE METALS (QW-403)

P- No. 1 GROUP No. 1& 2 TO P-No. 1 GROUP No. 1& 2

OR

SPECIFICATION TYPE AND GRADETO SPECIFICATION TYPE AND GRADE

OR

CHEM. ANALYSIS AND MECH. PROP.

TO CHEM. ANALYSIS AND MECH. PROP.

THICKNESS RANGE

BASE METAL GROOVE FILLET ALL

PIPE DIA. RANGE GROOVE FILLET ALL

OTHER

FILLER METALS (QW-404)

SPEC No .(SFA) 5.18 5.5

AWS No. (CLASS) ER 70S-2 E 7018 H4R

F-No. 6 4

A-No. 1 1

SIZE OF FILLER METALS 2.5/3.2/4.0 mm

WELD METAL

THICKNESS RANGE :

GROOVE. up to 6 mm up to 47.94 mm

FILLET ALL ALL

ELECTRODE FLUX (CLASS) N/A N/A

FILLER METAL PRODUCT FORM Solid

FLUX TRADE NAME N/A N/A

CONSUMABLE INSERT NONE NONE

OTHER N/A N/A

2.4 mm

Bare Solid


N/A

N/A

5 - 53.94 mm.

ALL

GTAW SMAW

GTAW + SMAW

No backing strip for pipe butt weld

26.97 mm Thk


Wara Pressure Maintenance Project (WPMP)

Contract No : 11050146

PRELIMINARY WELDING

PROCEDURE SPECIFICATION(Sec-IX)HOT-WPS-GTSM--073

24-Jun-12 HOT -PQR-065

35 2.5

2.0-4.0mm 1.60.8mm

Tb : Nominal Thickness of Branch

Th : Nominal Thickness of Header

Tc : Lessor of 0.7Tb or 6mm (1/4 In.)


5/5

REV.

POSITIONS (QW-405 ) POSTWELD HEAT TREATMENT (QW- 407)

POSITION (S) OF GROOVE ALL Temperature range

WELDING PROGRESSION UP/DOWN : Uphill HOLDING Time Min 1hr/inch

POSITION (S) OF FILLET ALL Controlled Heating Rate ( Max / Hour ) 150 1 hr

Controlled Cooling Rate ( Max / Hour ) 15150 1 hr

GAS (QW-408)

PREHEAT (QW-406) PERCENT COMPOSITION

PREHEAT TEMP. MIN. . 100C GAS (ES) MIXTURE FLOW RATE

INTERPASS TEMP. MAX. 197 C

METHOD ARGON

INSPECTION METHOD TRAILING N/A

BACKING N/A

ELECTRICAL CHARACTERISTICS ( QW-409 )

CURRENT AC OR DC DC POLARITY

AMPS (RANGE ) SEE TABLE VOLTS (RANGE)

TUNGSTEN ELECTRODE SIZE AND TYPE

MODE OF METAL TRANSFER FOR GMAW N/A

ELECTRODE WIRE FEED SPEED RANGE N/A

TECHNIQUE ( QW-410 )

STRING OR WEAVE BEAD BOTH

ORIFICE OR GAS CUP SIZE No 5 to No 8

INITIAL AND INTERPASS CLEANING ( BRUSHING, GRINDING, ETC.) By Wire Brushing /and Grinding

METHOD OF BACK GOUGING NA

OSCILLATION NA

CONTACT TUBE TO WORK DISTANCE N/A

MULTIPLE OR SINGLE PASS (PER SIDE ) MULTIPLE

MULTIPLE OR SINGLE ELECTRODES SINGLE

TRAVEL SPEED (RANGE )

PEENING NONE

NOTE:

WELD FILLER METAL CURRENT

LAYER RANGE

POLARITY RANGE

ER70S-2

ER70S-2

SIGNATURE

DATE

0.92-1.41

APPROVALS HOTECC GS E & C COMPANY

NAME

Capping SMAW E7018H4R 3.2 mm DCEP 86-138 24-28 134-165

22-29 100-180 1.10-1.60Filling SMAW E7018H4R 2.5/3.2/4.0 mm DCEP 83-165

1.06-1.49

Hot GTAW 2.4mm DCEN 151-168 11-15 48-65 2.08-2.33

Root GTAW 2.4mm DCEN 90-105 9-13 46-55

AMPERS mm/min

CLASS DIAMETER

TRAVEL

Heat Iuput

(KJ/mm)

VOLT SPEED

PROCESS RANGE

TYPE

N/A N/A

GTAW-EN / SMAW EP

SEE TABLE

2.4 mm EWTH-2

See Table

Heating Torch with propane gas SHIELDING 99% 11-15LPM

Tempil stick / Thermometer N/A N/A

HOT-WPS-GTSM-073 A

593-649C (t: over 20.0 mm)

b) Material thickness 1 in and over : Holding time will be multiplied with 2.4 with thickness (Min 1 1/2 hour) for PWHT

a) Material thickness less than 1 in : Min 1 hr for PWHT

PWPS -GTSM-73 REV-A

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