Golden Weld for natural gas pipelines
Golden Weld for natural gas pipelines
(OP)
Happy New Year all!
We recently replaced a section of a 12'' duplex stainless steel natural gas pipeline, which required us replacing a 2m spool and welding two joints.
Because of the length of the line (12km) and the volume of water that will be required, we have decided to treat the 2 welds as golden weld and carry out radiography and ultrasonic tests rather than hydrotesting.
Is there any standard that prevents us from doing this? Is there a mention of situations where we can do this in any of the ISO/API/ASME standards?
Feedback will be appreciated
We recently replaced a section of a 12'' duplex stainless steel natural gas pipeline, which required us replacing a 2m spool and welding two joints.
Because of the length of the line (12km) and the volume of water that will be required, we have decided to treat the 2 welds as golden weld and carry out radiography and ultrasonic tests rather than hydrotesting.
Is there any standard that prevents us from doing this? Is there a mention of situations where we can do this in any of the ISO/API/ASME standards?
Feedback will be appreciated





RE: Golden Weld for natural gas pipelines
RE: Golden Weld for natural gas pipelines
RE: Golden Weld for natural gas pipelines
ISO 13623 just requires 100% Rt or UT for tie in welds not pressure tested.
IMHO, you should use at least two different NDT tests and as many as you can which are relevant, e.g. Dye pen and 100% visual inspection during welding.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Golden Weld for natural gas pipelines
RE: Golden Weld for natural gas pipelines
RE: Golden Weld for natural gas pipelines
RE: Golden Weld for natural gas pipelines
This is from experience based.
Hope it helps.
Thanks