# Regulus search export

- Query: `55 FR 23515`
- Source type: All
- Part: All
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- Status: All
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- Sort: relevance
- Date from: Any
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- As of: Current corpus
- Results: 3
- Exported: 2026-08-25T04:51:12.435Z

## 1. NTSB Safety Recommendation P-87-023

**Citation:** P-87-023  
**Type / status:** guidance / guidance  
**Agency:** National Transportation Safety Board  
**Effective / published:** 1987-09-09 / 1987-09-09

THE NTSB RECOMMENDS THAT THE OFFICE OF PIPELINE SAFETY: REVISE 49 CFR PARTS 192 AND 195 TO INCLUDE OPERATIONAL BASED CRITERIA FOR DETERMINING SAFE SERVICE INTERVALS FOR PIPE LINES BETWEEN HYDROSTATIC RETESTS. (Supersedes P-78-058)

### Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/carol-main-public/sr-details/P-87-023>
- Source ID: `ntsb-pipeline`
- SHA-256: `c950b9fa13e0ba916c6a1cb7ff6d963a240af20f5b13019344b1f584fa4a9988`
- Retrieved: 2026-08-20T04:57:24.741Z
- Document slug: `ntsb-recommendation-p-87-023`
- Related records: 4

## 2. NTSB Safety Recommendation P-87-005

**Citation:** P-87-005  
**Type / status:** guidance / guidance  
**Agency:** National Transportation Safety Board  
**Effective / published:** 1987-03-24 / 1987-03-24

THE NTSB RECOMMENDS THAT THE RESEARCH AND SPECIAL PROGRAM ADMINISTRATION, U.S. DEPARTMENT OF TRANSPORTATION: ESTABLISH CRITERIA FOR USE BY OPERATORS OF PIPELINES IN DETERMINING THE FREQUENCY FOR PERFORMING INSPECTIONS AND TESTS CONDUCTED TO DETERMINE THE APPROPRIATENESS OF ESTABLISHED MAXIMUM ALLOWABLE OPERATING PRESSURES.

### Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/carol-main-public/sr-details/P-87-005>
- Source ID: `ntsb-pipeline`
- SHA-256: `bbceba603c0b36f50783fcd37c9b9d9e57b0f34c9d9d276e9bfb78d3abc7da77`
- Retrieved: 2026-08-20T04:57:24.741Z
- Document slug: `ntsb-recommendation-p-87-005`
- Related records: 4

## 3. NTSB Safety Recommendation P-87-004

**Citation:** P-87-004  
**Type / status:** guidance / guidance  
**Agency:** National Transportation Safety Board  
**Effective / published:** 1987-03-24 / 1987-03-24

THE NTSB RECOMMENDS THAT THE RESEARCH AND SPECIAL PROGRAM ADMINISTRATION, U.S. DEPARTMENT OF TRANSPORTATION: REQUIRE OPERATIONS OF BOTH GAS AND LIQUID TRANSMISSION PIPELINES TO PERIODICALLY DETERMINE THE ADEQUACY OF THEIR PIPELINES TO OPERATE AT ESTABLISHED MAXIMUM ALLOWABLE PRESSURES BY PERFORMING INSPECTIONS OR TESTS CAPABLE OF IDENTIFYING CORROSION-CAUSED AND OTHER TIME-DEPENDENT DAMAGES THAT MAY BE DETRIMENTAL TO

### Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/carol-main-public/sr-details/P-87-004>
- Source ID: `ntsb-pipeline`
- SHA-256: `c4ab0382fe5a072c1b05bd17e2c766452fad82a3f9231dbecd717741511a7d6d`
- Retrieved: 2026-08-20T04:57:24.741Z
- Document slug: `ntsb-recommendation-p-87-004`
- Related records: 4