# Pipeline Safety: Interpretation Request Procedures
> **Pipeline and Hazardous Materials Safety Administration** · Final rule. · Published 2026-04-24 · Effective 2026-04-24 · 91 FR 21973
## Document
- **Document number:** 2026-08060
- **Category:** pipeline-safety
- **Sub-agency:** Pipeline and Hazardous Materials Safety Administration
- **Federal Register citation:** 91 FR 21973
- **CFR reference:** 49 CFR 190
- **Publication date:** 2026-04-24
- **Effective date:** 2026-04-24
- **DOT docket:** Docket No. PHMSA-2026-1536
## Abstract

PHMSA is amending its procedural regulations to require the posting of requests for regulatory interpretations on its public website and to provide an opportunity for the public to comment.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/04/24/2026-08060/pipeline-safety-interpretation-request-procedures)
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