EPRG - European Pipeline Research Group

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Publications

Title	| Authors
Probabilistic evaluation of the safety embodied in the EPRG recommendations for shear fracture arrest toughness « back	S J Dawson and V Pistone
11th PRCI/EPRG Joint Technical Meeting, Arlington, Virginia, April 1997
In 1993 the European Pipeline Research Group (EPRG) published minimum recommendations for shear fracture arrest toughness in gas transmission pipelines of grades up to X80. This paper describes an evaluation of the safety embodied in the EPRG recommendations. The relationship between the EPRG minimum toughness recommendations (measured by Charpy V notch energies) and the toughness distribution of the actual supplied pipe was investigated. This relationship was utilised to evaluate the probability of a shear fracture propagating for a given number of pipe lengths in a pipe supply purchased to EPRG m i n i to ughness recommendations. In modern pipe production, average pipe toughness values generally exceed the EPRG minimum recommended toughness levels by a large margin. Consequently there is a very low probability of a long propagating fracture in modern linepipe purchased to the EPRG recommendations.
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