# NTSB Safety Recommendation P-73-012

**Citation:** P-73-012  
**Type / status:** guidance / guidance  
**Agency:** National Transportation Safety Board  
**Effective:** 1973-06-18  
**Published:** 1973-06-18

TO THE OFFICE OF PIPELINE SAFETY OF THE DEPARTMENT OF TRANSPORTATION: Amend 49 CFR 192 and 49 CFR 195 to require each pipeline operator to establish a program for the prevention of excavation-type damage to its underground facilities. (Superseded by P-84-26)

## Document text

NTSB safety recommendation P-73-012.

TO THE OFFICE OF PIPELINE SAFETY OF THE DEPARTMENT OF TRANSPORTATION: Amend 49 CFR 192 and 49 CFR 195 to require each pipeline operator to establish a program for the prevention of excavation-type damage to its underground facilities. (Superseded by P-84-26)

Priority: CLASS II

Overall Status: Closed - Superseded

Issued Date: 1973-06-18

Adopted Date: 1973-06-07

Overall Date Closed: 1985-08-19

Synopsis: "SPECIAL STUDY - PREVENTION OF DAMAGE TO PIPELINES." THIS SPECIAL STUDY CONCERNS DAMAGE TO GAS AND LIQUID PIPELINES CAUSED BY EXCAVATION AND CONSTRUCTION ACTIVITIES, INCLUDING BLASTING.

Ntsbnumber: 80571

Report Number: PSS-73-01

Addressee Name: RSPA

Addressee Status: Closed - Superseded

Addressee Date Closed: 1985-08-19

Addressee Acronym: RSPA

Addressee Organization Type: G-Federal Government

Communication Date: 1978-04-03

Communication Type: Official Correspondence

Communication Contents: 11/1/73 - DOT LTR: FURTHER OPS ACTIVITIES TOWARD THE PREVENTION OF EXCAVATION-TYPE DAMAGE TO UNDERGROUND FACILITIES INCLUDE PLANS TO REVISE THE FEDERAL GAS AND LIQUID PIPELINE SAFETY REGULATIONS. 4/3/78 - OPSO LTR IN RESPONSE TO NTSB 11/4/77 LETTER REQUESTING STATUS OF ACTION DESCRIBED IN LETTER OF 11/1/73: LETTER DISCUSSED AMENDMENT TO 192.707 ON MARCH 27, 1975, TO INCREASE AND CLARIFY REQUIREMENT FOR LINE MARKERS FOR MAIN AND TRANSMISSION LINES. AN EXCEPTION TO THIS REQUIREMENT IS WHERE A LAW ESTABLISHES A PROGRAM FOR PROTECTION OF UNDERGROUND PIPELINES. OPSO SENT TO THE STATE GOVERNORS A MODEL UNDERGROUND UTILITY DAMAGE PREVENTION ACT TO ASSIST STATE LEGISLATURES. OPSO ADDRESSES THIS PROBLEM THROUGH SPEAKING ENGAGEMENTS AND SEMINARS. THEY HAVE A COMPLETED STUDY ON THE SUBJECT WHICH IS BEING EVALUATED FOR FURTHER ACTION.

Addressee Acronym: RSPA

Addressee Organization Type: G-Federal Government

Communication Date: 1977-11-04

Communication Type: Official Correspondence

Addressee Acronym: RSPA

Addressee Organization Type: G-Federal Government

Communication Date: 1985-08-19

Communication Type: Official Correspondence

## Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/carol-main-public/sr-details/P-73-012>
- Source ID: `ntsb-pipeline`
- SHA-256: `95b327dc941bbb8b3ff699abd338e69c4acc6de03c385af1cecf05e421a3cefe`
- Retrieved: 2026-08-20T04:57:24.741Z
- Exported: 2026-08-23T19:06:45.712Z
- Document slug: `ntsb-recommendation-p-73-012`

### Source metadata

```json
{
  "recordKind": "ntsb_safety_recommendation",
  "safetyRecommendationNumber": "P-73-012",
  "recommendationMode": "Pipeline",
  "topicMode": "Pipeline",
  "ntsbNumber": "80571",
  "priority": "CLASS II",
  "overallStatus": "Closed - Superseded",
  "overallStatusAcronym": "CS",
  "overallDateClosed": "1985-08-19",
  "lastModifiedDate": "2016-11-15",
  "reportNumber": "PSS-73-01",
  "reportUrl": "https://www.ntsb.gov/investigations/Pages/80571.aspx",
  "transmittalLetterUrl": "http://www.ntsb.gov/safety/safety-recs/recletters/P73_12_28.pdf",
  "addressees": [
    {
      "addresseeName": "RSPA",
      "addresseeStatusAcronym": "CS",
      "addresseeStatus": "Closed - Superseded",
      "addresseeDateClosed": "1985-08-19",
      "addresseeDetails": [
        {
          "addresseeAcronym": "RSPA",
          "addresseeOrganizationType": "G-Federal Government",
          "isFromNtsb": false,
          "communicationDate": "1978-04-03",
          "communicationType": "Official Correspondence",
          "communicationContents": "11/1/73 - DOT LTR: FURTHER OPS ACTIVITIES TOWARD THE PREVENTION OF EXCAVATION-TYPE DAMAGE TO UNDERGROUND FACILITIES INCLUDE PLANS TO REVISE THE FEDERAL GAS AND LIQUID PIPELINE SAFETY REGULATIONS. 4/3/78 - OPSO LTR IN RESPONSE TO NTSB 11/4/77 LETTER REQUESTING STATUS OF ACTION DESCRIBED IN LETTER OF 11/1/73: LETTER DISCUSSED AMENDMENT TO 192.707 ON MARCH 27, 1975, TO INCREASE AND CLARIFY REQUIREMENT FOR LINE MARKERS FOR MAIN AND TRANSMISSION LINES. AN EXCEPTION TO THIS REQUIREMENT IS WHERE A LAW ESTABLISHES A PROGRAM FOR PROTECTION OF UNDERGROUND PIPELINES. OPSO SENT TO THE STATE GOVERNORS A MODEL UNDERGROUND UTILITY DAMAGE PREVENTION ACT TO ASSIST STATE LEGISLATURES. OPSO ADDRESSES THIS PROBLEM THROUGH SPEAKING ENGAGEMENTS AND SEMINARS. THEY HAVE A COMPLETED STUDY ON THE SUBJECT WHICH IS BEING EVALUATED FOR FURTHER ACTION."
        },
        {
          "addresseeAcronym": "RSPA",
          "addresseeOrganizationType": "G-Federal Government",
          "isFromNtsb": true,
          "communicationDate": "1977-11-04",
          "communicationType": "Official Correspondence",
          "communicationContents": ""
        },
        {
          "addresseeAcronym": "RSPA",
          "addresseeOrganizationType": "G-Federal Government",
          "isFromNtsb": true,
          "communicationDate": "1985-08-19",
          "communicationType": "Official Correspondence",
          "communicationContents": ""
        }
      ]
    }
  ],
  "jurisdiction": "US"
}
```