WELDING PROCEDURE SPECIFICATION

TM 5-5420-279-23

WPS No. 0058

WILLIAMS FAIREY ENGINEERING LTD.

APPROVAL REPORT:

WELDING PROCEDURE SPECIFICATION - WPS NO: 058

W.P.A.R. No: 52

Approved by:

Sheet No: 1

Issue: 1

Date: 02-07-98

K.L. No: 10813

Primary Specifications:

Material Specification:

Material Dimensions.

BS EN 729

BS EN 101115S 355NL

Thickness: 6.25 to 25mm

BS 7197 1989 355EM

Pipe Dia: ALL

Type Of Joint:

Welding Process:

Welding Position:

Butt weld

Flux cored M.I.G.

Joint Preparation:

Run Sequence & Weld Dimensions:

Preparation Method: Machining/Grinding

Welding Details:

Size of

Wire feed

Travel

Heat

Type of

Run No.

Process

Current A

Voltage

filler

Speed

Input

Current

metal

M/Min

mm/Min

J/mm

Flux cored

1.2mm

250 - 300

27 - 32

DC + VE

9.5 - 11.5

M.A.G

Additional

Flux cored

1.2mm

250 - 280

27 - 32

DC + VE

9.5 - 11.5

runs

M.A.G

Filler Metal Classification & Trade Name: AWS. A5. 29. 80. E80T5 - G OERLIKON

FLUXOFILL 40

Gas Type Shielding:

Gas flow Shielding:

Tungsten Electrode Type:

Specshield 20%

30 - 40 cu/ft/hr

N/A

Backing: N/A

Size: mm N/A

Details of Back Cutting / Backing: N/A

Preheat Temperature:

Interpass temperature:

Transfer Mode: Spray

Min +5C

Max 150C

Other Information: Ensure that the joint is free from surface contamination.

All unsound tack welds to be removed or dressed.

For a combined joint thickness of 36mm to 75mm and plate thickness of 20mm to 75mm a

70C preheat must be used for tack welding and welding.

For plate and combined joint thickness over 75mm a 100C preheat is to be used for tack

welding and welding.

Appendix K Page 75