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Includes stainless steel, nickel-based alloys, and titanium in severe corrosion and high temperature services.
Involves specific services using austenitic stainless steel or duplex stainless steels.
Applications with design temperatures above 427°C.
It supplements other standards and may apply to additional applications.
Address conflicts to the EK&RD Coordinator.
To ensure the ferrite content is within specified limits for quality.
Minimize contamination from carbon steels and ferrous debris.
It can lead to Liquid Metal Embrittlement, causing cracking.
Must be between 3 and 10 FN.
They must be clearly marked for traceability and correct usage.
Re-solution heat treatment is necessary.
They require thermal stabilizing post weld heat treatment.
GTAW process must be used.
It must not exceed 175°C.
An inert backing gas is required.
It should achieve a theoretical volume change of 6 times the enclosed pipe volume.
Purging is necessary when the remaining ligament is less than 10 mm.
Root gaps must be equal to or larger than the root pass filler wire diameter.
It ensures stable arc initiation.
They must be free of defects like cracks and incomplete fusion.
Dye penetrant testing must be performed.
Zero lack of root penetration and fusion is required.
Computerized advanced ultrasonic methods can be used instead.
It must match the grade and composition of the base metal.
Oxygen levels must be measured periodically.
It removes moisture from the materials.