# Pipeline Safety: Polyamide-11 (PA-11) Plastic Pipe Design Pressures
> **Pipeline and Hazardous Materials Safety Administration** · Final rule. · Published 2008-12-24 · Effective 2009-01-23 · 73 FR 79002
## Document
- **Document number:** E8-30637
- **Category:** pipeline-safety
- **Sub-agency:** Pipeline and Hazardous Materials Safety Administration
- **Federal Register citation:** 73 FR 79002
- **CFR reference:** 49 CFR 192
- **Publication date:** 2008-12-24
- **Effective date:** 2009-01-23
- **DOT docket:** Docket No. PHMSA-2005-21305
## Abstract

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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/12/24/E8-30637/pipeline-safety-polyamide-11-pa-11-plastic-pipe-design-pressures)
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