• Author / Uploaded
• Srinivasan Muruganantham

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DOC. REF WPS NO:

WELDING PROCEDURE SPECIFICATION Summary: GTAW / 6G / A 312 / φ ≥ 25.4mm OD

Applicable Codes: ASME SEC IX 2010

GTAW

Welding Process(es):

Rev:00

Type:

JOINT DESIGN(QW-402): Single V Groove Single bevel Branch

Page No.:

Manual Automatic, Manual, or Semi Auto) Joint Details 37.50± 2.50.

Socket Backing(Yes/No): NO Backing Material: Metal Nonfusing Metal Nonmetallic Other

1.6mm±0.8

2-4 mm

PQR 2" Dia-5.54mm THK

Note: Applicable to all Groove configurations BASE METAL(QW-403): P.No.

8

Group No.

1,2,3,4

To

P.No.

8

Group No.

1, 2, 3,4

OR Specification,type, and grade

: A 312 Gr.TP316L and Equivalent

to Specification type, and grade

: A 312 Gr.TP316L and Equivalent

OR Chemical Analysis,and Mechanical properties

: NA

to Chemical Analysis,and Mechanical properties

: NA

Thickness Range Qualified: Base Metal:

Groove-

1.5 to 11.08 mm

Fillet -

All

Base Metal Range:

Others:

Base metal Qualified:

P.No.: 8 or Equivalent, ASTM A312 Gr.TP316L or Equivalent

Pipe Dia. Range:

Groove-

All

Fillet -

All

FILLER METALS(QW-404): Root + Others Spec. No.(SFA)

SFA - 5.9

AWS No.(Class)

ER 316L

F.No.

6

A.No.

8

Size of Filler Metals Weld Metal

5.54 mm + Reinforcement

Thickness Groove Range Fillet

11.08 mm

Electrode Flux (Class)

NA

Flux Trade Name

NA

Consumable Insert Brand

NAME DESN. DATE:

All

NA ESAB - OK 16.30

PREPARED BY SIGN.

2 / 2.4 mm dia

REVIEWED BY

APPROVED BY

WELDING PROCEDURE SPECIFICATION Summary: GTAW / 6G / A 312 / φ ≥ 25.4mm OD

Applicable Codes: ASME SEC IX 2010

DOC. REF WPS NO: Rev:00 Page No.:

POSITIONS(QW-405): Position of Groove 6G & ALL Welding Progression UPHIL Position of Fillet All Others

POST WELD HEAT TREATMENT(QW-407): Heating Rate NA Holding Temperature Range NA Holding Time Range NA Cooling Rate NA Others -

PREHEAT(QW-406):

GAS(QW-408):

Preheat Temperature(Min.) -100 C Min Interpass Temperature(Max.) Preheat Maintenance Yes

Gas(es) ARGON

Shielding Trailing Backing Gas : Single

1500C Max

Percent composition %Comp. of Flow Rate 99.995 % 8 to 15 LPM

NA

NA

NA

ARGON

99.995 %

8 to 15 LPM

75 - 120 Amps

Voltage Range:

09 - 15 Volts

ELECTRICAL CHARACTERISTICS(QW-409): Current AC or DC: DC

Polarity :

Tungeston Electrode Size and Type Mode of Metal transfer for GMAW Electrode/Wire feed speed range -

Straight for GTAW (NegativeDCEN) 2.4 mm and 2% Thoriated NA NA

Ampere Range:

TECHNIQUE(QW-410): String / Weaving shall not exceed 2.5 times of electrode dia. Stringe or Weave Bead Orifice or Gas Cup Size 5 -8 mm OD Initial and Interpass Cleaning(Brushing,Grinding,etc.) Grinding & Brushing (Use Stainless steel special tools) Method of Back Gouging NA Oscillation NA Contact Tube to Work Distance NA Multiple or Single Pass(per side): Multiple Multiple or Single Electrode Single Travel Speed Range 0.8 - 1.5 mm/sec Peening NA Closed to out chamber : NA Use of thermal Process : NIL Others Filler Metal Current Weld Voltage Travel Speed Weld Layer Diameter Type & Ampere Process Range(V) Range Class mm Polarity Range(A) Root+ Hot

GTAW

ER 316L

2 / 2.4 mm

DCEN

75 - 100

09 - 15

0.8 - 1.5 mm/sec

Filler/ Capping

GTAW

ER 316L

2 / 2.4 mm

DCEN

95-120

09- 15

0.8 - 1.5 mm/sec

PREPARED BY SIGN.

NAME DESN. DATE:

REVIEWED BY

REMARKS

APPROVED BY