Pipeline Safety: Polyamide–11 (PA–11) Plastic Pipe Design Pressures

• Date: December 29, 2009
• Source: www.phmsa.dot.gov

This final rule amends the design factor and design pressure limits for natural gas pipelines made from new Polyamide–11 (PA–11) thermoplastic pipe. Together, these two changes in the regulations allow pipeline operators to operate certain pipelines constructed of new PA–11 pipe at higher operating pressures than is currently allowed for other plastic pipe materials.

Effective Date: This rule is effective January 23, 2009

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