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Stakeholder Documents - Advisory Bulletin ADB-09-01

PHMSA issued Advisory Bulletin 09-01 on May 21, 2009. This bulletin advises pipeline operators of material problems – inconsistent chemical and material properties – that have been found in microalloyed high-strength line pipe grades, generally grade X-70 and above. The Bulletin reports that some pipe material did not meet the requirements of the American Petroleum Institute, Specification for Line Pipe—5L, (API 5L), 43rd edition for the specified pipe grade even though the pipe supplier provided documentation that the pipe met these minimum standards. The Bulletin suggests that pipeline operators closely review manufacturing specifications for the production and rolling of steel plate and that they request detailed manufacturing procedure specifications (MPS) as a basis to assure critical parameters are controlled throughout the pipe manufacturing process.

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