Welding

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Moffat has a large library of pre-qualified weld procedures, qualified in accordance with all major oil companies’ specifications. We perform regular bespoke weld procedures averaging at 30 new procedures per year for permanent & subsea works.

All of our Welders are fully coded. Our large facility has 10,761sq. ft. welding and fabrication area, this offers delegated zones for material segregation, 5 overhead 10 Te cranes and fully equipped facilities.

Material Grades: Carbon Steel, AISI 4130, S/Steel 316L, Duplex UNS 31803, Super-duplex UNS 32760-32750, Inconel 625 & Nitronic 60

Standards: ASME IX, AWS D1.1, BS EN 15614, BS EN 4515 PART 1&2 & DNV-OS-F101

Processes: GTAW, SMAW, GSFCAW & SAW

An Example Weld Procedure taken from BP Project –SHAH-DENIZ

This weld procedure involved the following steps, as illustrated below:

1. Batch testing

 

2. Buttering weld procedure

3. Butt weld procedure

4. Repair weld procedure