MadinaCompany Name : Madina Group W.L.L. Identification : 012 Revision : 01

Welding Process(es) : GTAW Date : 13.06.2002 By : V. Pandu

Supporting PQR No(s) : 012 Rev. 0 Authorised By: S. Thirumaran Date : 13.06.2002

Type - Manual x Semi-Automatic

JOINT DESIGN USED Machine Automatic

Type : Butt PREHEAT (QW 406)

Single x Double Weld Preheat Temp. Min. : 16°C

Backing : Yes No x Interpass Temp. Max. : 175°C

Backing Material : None Preheat maintenance : N/A

Root Opening : 3 - 4mm Root Face Dimension : 1.5mm POST WELD HEAT TREATMENT ( QW -407)

Groove Angle : 60 - 70° Radius (J - U) : N/A Soaking Temp. : N/A

Back Gouging : Yes No x Method : N/A Time : N/A

BASE METALS (QW403) Heating Rate : N/A

P. No. 1 Group 1/2 To P No. 1 Group 1/2 Cooling Rate : N/A

Material Spec : Any Material From P1 Grp 1/2 to P1 Grp 1/2 GASES (QW -408)

Thickness : Groove MITS 12 Gas(es) Mixture Flow Rate Remarks

2.25 mm to 7mm (Sour Service) Shielding Argon 99.99% 10-11 L/M

2.25mm to 11mm (Non Sour Service) Trailing -- -- --

Thickness : Groove: (ASME IX): 1.60 to 11.08mm Backing -- -- --

Diameter Pipe : All Max. C.E% : 0.43 Max. Fillet : All ELECTRICAL CHARACTERISTIC (QW 409)

FILLER METALS (QW 404) GTAW SMAW Transfer Mode (GTAW) : N/A

Spec No. (SFA) 5.18 - Short Circuiting Globular Spray

AWS No. (Class) ER70S-3 - Current : GTAW : DCEN

F.No. F6 -

A.No. 1 - Other

Size of Filler Metals - Tungsten Electrode (GTAW)

Impact Test -29°C Size : 2.00 mm

Weld Metal Thk. Range Type : 2% Thoriated

Groove (Max.) 11.08mm -

Fillet All - TECHNIQUE (QW - 410)

Electrode Flux N/A - Stringer or Weave Bead:

Flux Trade Name N/A - Multi - Pass or Single Pass (per side) : Multipass

Consumable Insert N/A - Number of Electrodes : Single

Contact tube to work distance : N/A

POSITION (405) Peening : None

Position of Groove : All Fillet : All Interpass Cleaning : Grinding / Chipping

Vertical Progression : Up x Down Other : No Single Pass Thk. More than 12.7mm

WELDING PROCEDURE

Pass or

Process

Filler Metals Current

Volts

Travel Heat

Joint Details

Weld

Class Diam.

Type & Amps Speed Input (Max.)

Layer (s) Polarity mm/Min. Kj/mm

Root GTAW ER70S-3 2.4 DCEN 75 - 100 10 - 14 90 - 100 0.93

Hot Pass GTAW ER70S-3 2.4 DCEN 52 - 70 12 - 16 60 - 90 0.90

Fill & Cap GTAW ER70S-3 2.4 DCEN 78 - 106 11 - 15 55 - 103 1.75

Madina Mechanical Third Party Client

Name : V. Pandu Name : Name :

Sign : Sign : Sign :

Date : Date : Date :

FORM NO.: MSF/29/WPS REV. (C )

WELDING PROCEDURE SPECIFICATION (WPS) (As per QW 200.1 of Section IX, ASME Boiler and Pressure Vessel Code , MITS 12)

F 2.4mm

Max. weave 3 x Core f of Electrode