# NTSB Safety Recommendation P-74-037

**Citation:** P-74-037  
**Type / status:** guidance / guidance  
**Agency:** National Transportation Safety Board  
**Effective:** 1974-10-24  
**Published:** 1974-10-24

THE NTSB RECOMMENDS THAT THE OFFICE OF PIPELINE SAFETY OF THE DEPARTMENT OF TRANSPORTATION: REQUIRE PIPELINE OPERATORS WHO USE MATERIALS NOT SPECIFICALLY COVERED IN THE FEDERAL REGULATIONS TO FORMALLY ADVISE THE DEPARTMENT OF TRANSPORTATION OF ITS USE.

## Document text

NTSB safety recommendation P-74-037.

THE NTSB RECOMMENDS THAT THE OFFICE OF PIPELINE SAFETY OF THE DEPARTMENT OF TRANSPORTATION: REQUIRE PIPELINE OPERATORS WHO USE MATERIALS NOT SPECIFICALLY COVERED IN THE FEDERAL REGULATIONS TO FORMALLY ADVISE THE DEPARTMENT OF TRANSPORTATION OF ITS USE.

Priority: CLASS II

Overall Status: Closed - Reconsidered

Issued Date: 1974-10-24

Adopted Date: 1974-10-24

Overall Date Closed: 1976-10-21

Synopsis: ON JUNE 23, 1973, A SERIES OF EXPLOSIONS, FOLLOWED BY FIRE, OCCURRED AT 12321 WELLING LANE IN BOWIE, MARYLAND. THREE OCCUPANTS OF THE HOUSE WERE KILLED, AND A FOURTH WAS INJURED; THE HOUSE WAS BADLY DAMAGED. HOUSES IN A FIVE-BLOCK AREA WERE EVACUATED.

Ntsbnumber: PLD73XR006

Report Number: PAR-74-05

Addressee Name: RSPA

Addressee Status: Closed - Reconsidered

Addressee Date Closed: 1976-10-21

Addressee Acronym: RSPA

Addressee Organization Type: G-Federal Government

Communication Date: 1975-01-02

Communication Type: Official Correspondence

Communication Contents: MEMO FROM OFFICE OF PIPELINE SAFETY: IT IS OUR OPINION THAT COMPLIANCE WITH THE REQUIREMENTS IN PART 192 ENSURES THAT GAS PIPELINES ARE AS SAFE AS CURRENT TECHNOLOGY AND PROCEDURES CAN PRACTICALLY PROVIDE. THEREFORE, NO FURTHER ACTION ON THIS MATTER IS PLANNED BY OPS AT THIS TIME.

## Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/carol-main-public/sr-details/P-74-037>
- Source ID: `ntsb-pipeline`
- SHA-256: `a8f59c04af0d039c04a90b61ec2bb5a7861e2ce1ab5004aed61f5a6c441f7ba6`
- Retrieved: 2026-08-20T04:57:24.741Z
- Exported: 2026-08-23T12:04:39.748Z
- Document slug: `ntsb-recommendation-p-74-037`

### Source metadata

```json
{
  "recordKind": "ntsb_safety_recommendation",
  "safetyRecommendationNumber": "P-74-037",
  "recommendationMode": "Pipeline",
  "topicMode": "Pipeline",
  "ntsbNumber": "PLD73XR006",
  "priority": "CLASS II",
  "overallStatus": "Closed - Reconsidered",
  "overallStatusAcronym": "CR",
  "overallDateClosed": "1976-10-21",
  "lastModifiedDate": "2016-11-15",
  "reportNumber": "PAR-74-05",
  "reportUrl": "https://www.ntsb.gov/investigations/Pages/PLD73XR006.aspx",
  "transmittalLetterUrl": "http://www.ntsb.gov/safety/safety-recs/recletters/P74_37_49.pdf",
  "addressees": [
    {
      "addresseeName": "RSPA",
      "addresseeStatusAcronym": "CR",
      "addresseeStatus": "Closed - Reconsidered",
      "addresseeDateClosed": "1976-10-21",
      "addresseeDetails": [
        {
          "addresseeAcronym": "RSPA",
          "addresseeOrganizationType": "G-Federal Government",
          "isFromNtsb": false,
          "communicationDate": "1975-01-02",
          "communicationType": "Official Correspondence",
          "communicationContents": "MEMO FROM OFFICE OF PIPELINE SAFETY: IT IS OUR OPINION THAT COMPLIANCE WITH THE REQUIREMENTS IN PART 192 ENSURES THAT GAS PIPELINES ARE AS SAFE AS CURRENT TECHNOLOGY AND PROCEDURES CAN PRACTICALLY PROVIDE. THEREFORE, NO FURTHER ACTION ON THIS MATTER IS PLANNED BY OPS AT THIS TIME."
        }
      ]
    }
  ],
  "jurisdiction": "US"
}
```