New method uses hardness to find yield strength

Shadie RadmardMonique BergEnbridge Pipelines Inc.EdmontonBased on presentation to ASME's International Pipeline Conference, Calgary, Sept. 27-Oct. 1, 2010.A new method to determine yield strength based on hardness could be used in storage facility pipes with results more conservative than outlined in CFR Title 49 Part 195.106.The US Pipeline and Hazardous Materials Safety Administration (PHMSA) approved the methods of determining yield strength and maximum operating pressure described in CFR Title 49 Part 195.106 before the testing described in this article, results of which were presented to PHMSA in several meetings between September 2009 and February 2010.BackgroundEnbridge's Cushing, ...

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