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- Query: `63 FR 3653`
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- Exported: 2026-08-25T05:08:07.483Z

## 1. Pressure Testing Older Hazardous Liquid and Carbon Dioxide Pipelines

**Citation:** 63 FR 3653  
**Type / status:** rulemaking / historical  
**Agency:** Research and Special Programs Administration  
**Effective / published:** 1997-10-21 / 1998-01-26

This document confirms the effective date of the amendments of the direct final rule which extends the time for compliance with the requirements for pressure testing of older hazardous liquid and carbon dioxide pipelines.

### Provenance

- Official: Yes
- Source: <https://www.federalregister.gov/documents/1998/01/26/98-1747/pressure-testing-older-hazardous-liquid-and-carbon-dioxide-pipelines>
- Source ID: `federal-register`
- SHA-256: `5237f2731bca3c0c32523f2b02748bab5919e113d12c61722d0e9337baadb6c8`
- Retrieved: 2026-08-20T06:04:51.294Z
- Document slug: `federal-register-98-1747`
- Related records: 1