# Pipeline Safety: Standards Update-API RP 1170 and API RP 1171
> **Pipeline and Hazardous Materials Safety Administration** · Direct final rule (DFR); confirmation of effective date. · Published 2025-10-02 · Effective 2026-01-01 · 90 FR 47622
## Document
- **Document number:** 2025-19340
- **Category:** pipeline-safety
- **Sub-agency:** Pipeline and Hazardous Materials Safety Administration
- **Federal Register citation:** 90 FR 47622
- **CFR reference:** 49 CFR 192
- **Publication date:** 2025-10-02
- **Effective date:** 2026-01-01
- **DOT docket:** Docket No. PHMSA-2025-0120
## 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 standards American Petroleum Institute (API) recommended practice (RP) 1170, "Design and Operation of Solution- mined Salt Caverns Used for Natural Gas Storage," and API RP 1171, "Functional Integrity of Natural Gas Storage in Depleted Hydrocarbon Reservoirs and Aquifer Reservoirs."

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/10/02/2025-19340/pipeline-safety-standards-update-api-rp-1170-and-api-rp-1171)
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