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Notice of proposed rulemaking.

This proposed rule is part of a periodic effort by RSPA to revise and update the pipeline safety regulations to improve clarity, ensure consistency, and remove unnecessary requirements on the regulated pipeline community. Revisions include incorporation by reference of the most recent editions of voluntary consensus standards and specifications to enable pipeline operators to utilize current technology, materials, and practices. This document also proposes to increase the pressure limitation for new thermoplastic pipe, to allow plastic pipe on bridges, to clarify welding requirements, to revise the definition of hazardous liquid pipeline accident, and to make numerous minor clarifications.

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