Welding procedure specification

WELDING PROCEDURE SPECIFICATION

PROJECT : FABRICATION & ERECTION OF 30,000 LITRES ON 16M TOWER

PROCEDURE NO: WPS - 008SUPPORTING PQR N O :

CLIENT: DANTATA & SAWOELOCATION : KADUNA

CONTRACTOR: AREWA METAL CONTAINER (ARMECO) LTD.

CODES / APPLICABLE STANDARDS : ISO 15614-1

MATERIAL SPECIFICATION: ASTM A 36 (GRADE 43A)

JOINT DESIGN :SQUARE GROOVE BUTT JOINT WITHOUT BACKING

WELDING PROCESS : SHIELDED METAL ARC WELDING (SMAW)

ELECTRODE CLASSIFICATION: E6013 (AWS A5.1)

WELDING PROCEDURECOMPLETE JOINT PENETRATION GROOVE WELD

TEST METAL THICKNESS5MM

THICKNESS RANGE QUALIFIED: 2.5MM 6.5MM

WELD SEQUENCE ELECTRODE MANUFACTURER / SIZEDIAMETERAMPERAGEARC VOLTAGE

SINGLE PASSOERLIKON 350MM3.25MM100-140A22-28V

HOT PASS / SECOND PASSN/AN/AN/AN/A

OTHER PASSES / CAPPINGN/AN/AN/AN/A

OTHER ELECTRICAL CHARACTERISTICS CURRENT: 3 PHASE AC TRANSFER MODE: METAL ARC

WELDING POSITION FLAT, HORIZONTAL, VERTICAL, (1G,2G,3G)

VERTICAL PROGRESSION DOWN

TIME LAPSE BETWEEN END OF ROOT RUN AND START OF SECOND PASSN/A

TIME LAPSE BETWEEN END OF SECOND PASS AND START OF OTHER PASSESN/A

MAXIMUM TIME BETWEEN COMMENCEMENT AND COMPLETION OF WELD N/A

TYPE OF LINE UP CLAMP : NONE

REMOVAL OF LINE UP : N/A

CLEANING : WIRE BRUSHING

MINIMUM PRE-HEAT TEMPERATURENONE

TYPE OF HEATER TO BE USED N/A

MAXIMUM INTER-PASS TEMPERATURE: N/A

STRESS RELIEF PEENING

SHIELDING GAS N/ A

SPEED OF TRAVEL 78MM/MN

TEST ASSESSMENT: VISUAL, PENETRANT TEST & TENSILE TEST.

PREPARED BY HQA/QCCHECKED BYGM GENERAL SERVICESAPPROVED BYGM OPERATIONS

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