Sour Service Guided Bend Test
Sour Service Guided Bend Test
(OP)
CSA Z245.1 specifies that ERW pipe must pass a root guided bend test in order to be qualified for sour service.
My question is: why is a root guided bend test necessary for sour service qualification?
Background: In the process of converting an existing Grade 359 Cat II pipeline for sour service, one of the cutouts met the microhardness requirements but snapped in half during the guided bend test...
My question is: why is a root guided bend test necessary for sour service qualification?
Background: In the process of converting an existing Grade 359 Cat II pipeline for sour service, one of the cutouts met the microhardness requirements but snapped in half during the guided bend test...





RE: Sour Service Guided Bend Test
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Sour Service Guided Bend Test
Thank you for you comments, I agree that ISO 15156-2 B.3 may be a valuable test, especially if we encounter more failed bend tests.
The pipeline in question was previously in miscible hydrocarbon service and had no signs of degradation so I am still unsure as to what factors would cause the ERW to fail the bend test?
RE: Sour Service Guided Bend Test
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Sour Service Guided Bend Test
Yes buried with extruded polyethylene coating and CP since about 1985.
Mike
RE: Sour Service Guided Bend Test
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.