# Pipeline Safety: Standards Update PPI-TR 3
> **Pipeline and Hazardous Materials Safety Administration** · Direct final rule (DFR); confirmation of effective date. · Published 2025-10-02 · Effective 2026-01-01 · 90 FR 47621
## Document
- **Document number:** 2025-19333
- **Category:** pipeline-safety
- **Sub-agency:** Pipeline and Hazardous Materials Safety Administration
- **Federal Register citation:** 90 FR 47621
- **CFR reference:** 49 CFR 192
- **Publication date:** 2025-10-02
- **Effective date:** 2026-01-01
- **DOT docket:** Docket No. PHMSA-2025-0131
## Abstract

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 at 49 CFR part 192 to incorporate by reference the updated industry standard Plastic Pipe Institute (PPI) Technical Report (TR)-3, "Policies and Procedures for Developing Hydrostatic Design Basis (HDB), Hydrostatic Design Stresses (HDS), Pressure Design Basis (PDB), Strength Design Basis (SDB), Minimum Required Strength (MRS) Ratings, and Categorized Required Strength (CRS) for Thermoplastic Piping Materials or Pipe."

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/10/02/2025-19333/pipeline-safety-standards-update-ppi-tr-3)
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