# Regulus search export

- Query: `90 FR 28585`
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- Exported: 2026-08-25T04:30:51.927Z

## 1. Hazardous Materials: Adoption of Department of Transportation Special Permit 14175

**Citation:** 90 FR 28585  
**Type / status:** rulemaking / proposed  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective / published:** Not stated / 2025-07-01

PHMSA proposes adopting the provisions of Department of Transportation (DOT) special permit (SP) 14175 into the hazardous materials regulations to authorize a 10-year requalification period when using the ultrasonic examination (UE) testing method for DOT specification 3A and 3AA used for flammable and non-flammable, nonpoisonous gas service. The proposed adoption reflects advances in testing technology and would relieve the burden of performing more frequent cylinder requalification.

### Provenance

- Official: Yes
- Source: <https://www.federalregister.gov/documents/2025/07/01/2025-12083/hazardous-materials-adoption-of-department-of-transportation-special-permit-14175>
- Source ID: `federal-register`
- SHA-256: `f36840f2284ce023e673b950716a6af046ce84d48f971b306599d9e03ff81831`
- Retrieved: 2026-08-13T13:31:37.821Z
- Document slug: `federal-register-2025-12083`
- Related records: 7