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Accreditation, Approvals and Qualified Welding Procedures
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Accreditation |
ISO 9001:2008 LRQA 0965205
ASME U Stamp
In accordance with AFCEN RCC-M:2007
(Design & Construction rules for mechanical components of PWR Nuclear Islands)
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Approvals |
ABB Lummus Global
Air Liquide
Alstom
Azmeco
Azot
BP Chemicals
Dow Benelux
Essar
Exxon Mobil
Foster Wheeler Energy
Furnace Engineering Inc.
Haldor Topsoe
Hellenic
Heurtey Petrochem
Howe Baker Engineers
Hyundai
Indian Oil Corporation
Larsen & Toubro
Qunishan Nuclear
Repsol
Sabic
Shell UK
Taneco
Total
Weir Pumps
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Qualified Welding Procedures |
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Carbon & Carbon Manganese Steels |
General Pipe-Work and Pressure Vessel Steels
High Yield Grades
Low Temperature C-Mn Grades
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Low Alloy Steels |
Chromium-Molybdenum Creep resisting Steels
1 ¼ Cr to 9 Cr Range including 9 Cr Modified
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Austenitic Stainless Steels
(Wrought and Cast) |
Standard AISI 300 Series Steels including Low
Carbon (L) and High Carbon (H) Grades |
Duplex & Super Duplex Stainless Steels |
22% Standard Duplex – UNS S31803
22% Super Duplex – UNS S32760 |
High Nickel Alloys |
Nickel Copper Alloys
Nickel Chromium Alloys
Nickel Iron Alloys
Nickel Molybdenum Alloys |
Centrifugally & Static Cast |
Heat Resistant Austenitic & High Alloy Steel |
Heat Resistant Alloys |
including Proprietary Cast Alloys |
Copper Based Alloys |
Cupro-Nickel and Aluminium Bronze |
Reactive Metals |
Titanium |
Transition Joints |
A wide range of possible dissimilar metal
Combinations of Ferritic, Austenitic and High
Nickel Alloys |
Weld Overlay |
Austenitic Steel Alloys
Nickel Base Alloys
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Welding Processes |
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GTAW
SAW
SMAW
FCAW
GMAW |
Gas Tungsten Arc Welding (Automatic Tube to Tube, as well as Manual)
Submerged Arc Welding
Shielded Metal Arc Welding
Flux Cored Arc Welding
Gas Metal Arc Welding
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Processes other than SAW and GTAW automatic are used in all positions, but to reduce heat inputs and improve the mechanical properties, the down hand 1G / PA (rotated) position is used. |
