|
Clause |
Details |
|
WLD-FAB-001 |
Applicable codes for welding are ASME B31.3, ASME Boiler and Pressure Vessel Code. |
|
WLD-FAB-002 |
In India, additionally IBR Regulations Apply. |
|
WLD-FAB-003 |
Normally in hydrocarbon insustry, Carbon Steel, Alloy Steel and Stainless Steel are the base materials to be welded. |
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WLD-FAB-004 |
Welding consummables include Electrodes, Filler Wires, Argon gas etc. |
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WLD-FAB-005 |
Quality of welding consummables must be ensured as per Project Welding Specification. |
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WLD-FAB-006 |
Argon gas shall be 99.995 Percent Pure. |
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WLD-FAB-007 |
Welders must be qualified as per applicable code e.g. B31.3 |
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WLD-FAB-008 |
All the welding equipment like transformers, thermocouples, pyro-meters, automatic temperature recorders, heat treatment equipmets etc. is provided by welding contractor. |
|
WLD-FAB-009 |
All the weld testing equipment like radiographic equipments, radiographic films, darkroom facilities, dye-penetrant testing, magnetic particle testing, ultrasonic testic etc. are provided by the welding contractor. |
|
WLD-FAB-010 |
Generally used welding processes are SMAW and GTAW. |
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WLD-FAB-011 |
SMAW : Shielded Metal Arc Welding Process |
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WLD-FAB-012 |
GTAW : Gas Tungsten Arc Welding Process |
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WLD-FAB-013 |
Which welding process to be emplyed where is given in Project Welding Specification. |
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WLD-FAB-014 |
Edge preparation procedure required to be carried out for different types of base materials. |
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WLD-FAB-015 |
Cleaning of the edge is necessary. |
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WLD-FAB-016 |
After cleaning, edges are aligned and properly spaced. Tack welding, if required is done. |
|
WLD-FAB-017 |
Workpieces need to be protected form weather during welding. |
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WLD-FAB-018 |
Proper welding technique is usually specified in Project Welding Specification. |
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WLD-FAB-019 |
Welding procedure qualification record should be submitted by Welding Contractor to the Client. |
|
WLD-FAB-020 |
Preheating and Post Weld Heat Treatment need to be carried out as per Project Weldng Specification. |
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WLD-FAB-021 |
After welding and PWHT, Inspection and Testing of welds is done as per various testing and inspection methods specified in Project Welding Specification. |
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WLD-FAB-022 |
Repairs of welds may be done if defects are within certain limits. |
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WLD-FAB-023 |
Contractor has to submit various documents related to welding work done by him. |