WELDING PROCEDURE SPECIFICATION

TM 5-5420-279-23

WPS No. 0105

WILLIAMS FAIREY ENGINEERING LTD.

APPROVAL REPORT:

WELDING PROCEDURE SPECIFICATION - WPS NO: 105

W.P.A.R. No: 001

Approved by:

Sheet No: 1

Issue: 1

Date: 06-08-02

K.L. No: 9526

Primary Specifications:

Material Specification:

Material Dimensions.

BS EN 729

BS 1470 Grade 5083 (N8)

Thickness: 3 to 6mm

Aluminium

Pipe Dia: N/A

Type Of Joint:

Welding Process:

Welding Position:

Butt and fillet weld

Manual T.I.G.

ALL

Joint Preparation:

Run Sequence & Weld Dimensions:

Preparation Method: Weld areas to be degreased and wire brushed before assembly

Welding Details:

Wire feed

Travel

Heat

Size of filler

Type of

Run No.

Process

Current A

Voltage

Speed

Input

metal

Current

M/Min

mm/Min

J/mm

T.I.G.

1.6 - 2.4mm

80 - 220

15 - 22

A/C

N/A

Additional

T.I.G.

1.6 - 2.4mm

70 - 220

15 - 22

A/C

N/A

runs

Filler Metal Classification & BS 2901 PT 4 TYPE 5556A

Gas Type Shielding: Argon

Gas flow Shielding:

Tungsten Electrode Type:

Backing: N/A

10 - 18 cu/ft/hr

Zirconiated

Backing: N/A

Size: 2.4 - 4mm

Details of Back Cutting / Backing: A copper backing bar to be used on butt welds

Preheat Temperature:

Interpass temperature:

Transfer Mode: N/A

Min +5C

100c

Other Information:

Dress or remove all unsound tack welds

Appendix K Page 80