Data / Federal rules / 2025-19334
Pipeline Safety: Standards Update-PPI-TR 4
The Pipeline and Hazardous Materials Safety Administration published this final rule in the Federal Register on October 2, 2025. It took effect on January 1, 2026.
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What the agency says
PHMSA is confirming the effective date for the DFR that appeared in the Federal Register on July 1, 2025. The DFR amended PHMSA's regulations to incorporate by reference the updated industry standard Plastic Pipe Institute (PPI) Technical Report (TR)-4, "PPI HSB Listing of Hydrostatic Design Basis (HDB), Hydrostatic Design Stress (HDS), Strength Design Basis (SDS), Pressure Design Basis (PDB) and Minimum Required Strength (MRS) Ratings For Thermoplastic Piping Materials or Pipe."
Key facts
- Document number
- 2025-19334
- Type
- Final rule
- Action
- Direct final rule (DFR); confirmation of effective date
- Agency
- Transportation Department; Pipeline and Hazardous Materials Safety Administration
- Published
- October 2, 2025
- Takes effect
- January 1, 2026
- Dates
- PHMSA confirms the effective date of January 1, 2026, for the DFR that appeared in the Federal Register on July 1, 2025 (90 FR 28075) .
- Docket
- Docket No. PHMSA-2025-0132
- Regulation ID (RIN)
- 2137-AG01
- Code of Federal Regulations
- 49 CFR 192
- Pages
- 1
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| Document | Type | Published |
|---|---|---|
| Hazardous Materials: Incorporation of ASME Code Section XII and the National Board Inspection Code 2026-19741 | Final rule | Sep 28 |
| Hazardous Materials: Allowing Fireworks Certification Agencies (FCAs) To Approve Professional Fireworks 2026-16111 | Final rule | Aug 7 |
| Hazardous Materials: Reducing Burdens on Domestic Companies Using Battery-Powered Equipment in Trades 2026-15823 | Final rule | Aug 4 |
| Hazardous Materials: Adoption of Department of Transportation Special Permit 21478 2026-15820 | Final rule | Aug 4 |
| Hazardous Materials: Adoption of Department of Transportation Special Permit 14175 2026-15819 | Final rule | Aug 4 |
| Hazardous Materials: Adoption of Department of Transportation Special Permit 21379 2026-15818 | Final rule | Aug 4 |
| Hazardous Materials: Adoption of Department of Transportation Special Permit 21287 2026-15817 | Final rule | Aug 4 |
| Hazardous Materials: Adoption of Department of Transportation Special Permits 12412 and 11646 Into the Hazardous Materials Regulations 2026-15816 | Final rule | Aug 4 |
Everything from the Pipeline and Hazardous Materials Safety Administration · Published in October 2025
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.