pipeline-safety · Pipeline and Hazardous Materials Safety Administration · Published 2025-07-01 · Effective 2026-01-01 · 90 FR 28075
Document
Document number
2025-12079
Federal Register citation
90 FR 28075
CFR reference
49 CFR 192
Type
Rule
Action
Direct final rule (DFR); request for comments.
Category
pipeline-safety
Sub-agency
Pipeline and Hazardous Materials Safety Administration
Publication date
2025-07-01
Effective date
2026-01-01
DOT docket
Docket No. PHMSA-2025-0132
Abstract
This DFR amends PHMSA's regulations to incorporate by reference the updated industry standard PPI 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. This updated standard will maintain or improve public safety, prevent regulatory confusion, reduce compliance burdens on stakeholders, and satisfy a mandate in the National Technology Transfer and Advancement Act (NTTAA) of 1995.