BS 8701:2016

BS 8701:2016 gives a method for determining the susceptibility tocracking of steel pipes in sour service.This British Standard utilizes a tubular specimen comprising a full circumferentialring. The test method applies to any pipe with or without seam (longitudinal orspiral) or girth weld (with or without filler).NOTE 1 The specimen is usually a pipe but can also consist of flange neck or sectionof a bend, or other tubular component or a combination of the above.This British Standard provides guidance on determination of specimen size toensure it retains residual stresses from manufacture and welding.NOTE 2 See Clause 7 for specimen sizes.The method utilizes ovalization to simulate hoop stress, using mechanicalloading on a tubular form. The specimen is subjected to single sided exposure tothe sour test environment.NOTE 3 The test also allows measurement of hydrogen permeation rates which canprovide useful information, such as highlighting the effects of galvanic couplingbetween materials of apparent compatibility.Cross References:BS EN 12668BS EN ISO 2400BS EN ISO 7963BS EN ISO 8044 BS EN ISO 9712BS EN ISO 11666BS EN ISO 16810BS EN ISO 17640 ASTM D1193NACE TM0177BS EN ISO 9001BS EN ISO 9002BS EN ISO 9934BS EN ISO 16811BS EN ISO 15156-3ASTM A370OTI 95 635Control of Substances Hazardous to Health Regulations1988 (COSHH)