# NTSB Safety Recommendation P-72-031

- **operation:** document
- **citation:** P-72-031
- **title:** NTSB Safety Recommendation P-72-031
- **source type:** guidance
- **agency:** National Transportation Safety Board
- **status:** guidance
- **official:** true
- **published on:** 1972-06-08
- **effective on:** 1972-06-08
- **summary:** THE NTSB RECOMMENDS THAT THE EQUITABLE GAS COMPANY: PREPARE WRITTEN PROCEDURES FOR EACH PLANNED SHUTDOWN OF A PORTION OF ITS PIPELINE SYSTEM, OR THE INSTALLATION OR REPLACEMENT OF PORTIONS OF THE SYSTEM WHICH REQUIRE STOPPING, OR INITIATING THE FLOW OF GAS.
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- **source url:** https://data.ntsb.gov/carol-main-public/sr-details/P-72-031
**body:**

NTSB safety recommendation P-72-031.

THE NTSB RECOMMENDS THAT THE EQUITABLE GAS COMPANY: PREPARE WRITTEN PROCEDURES FOR EACH PLANNED SHUTDOWN OF A PORTION OF ITS PIPELINE SYSTEM, OR THE INSTALLATION OR REPLACEMENT OF PORTIONS OF THE SYSTEM WHICH REQUIRE STOPPING, OR INITIATING THE FLOW OF GAS.

Priority: CLASS II

Overall Status: Closed - Acceptable Action

Issued Date: 1972-06-08

Adopted Date: 1972-05-25

Overall Date Closed: 1975-12-30

Synopsis: ON NOVEMBER 17, 1971, WHILE IN THE PROCESS OF REVAMPING A REGULATOR STATION, EMPLOYEES OF THE EQUITABLE GAS COMPANY WERE ATTEMPTING TO REPLACE A VALVE ON THE LOW-PRESSURE SIDE OF A REGULATOR IN A VAULT WITHOUT FIRST STOPPING THE FLOW OF GAS. TWO MEN WORKING IN THE VAULT WERE OVERCOME BY GAS LEAKING INTO THE VAULT. FOUR OTHERS ALSO WERE OVERCOME ATTEMPTING TO RESCUE THE FIRST TWO. ALL SIX MEN DIED OF ASPHYXIATION. THREE OTHER MEN ALSO WERE INJURED.

Probable Cause: Inhalation of natural gas released into a vault where two men were attempting to change a valve in the vault without first stopping the flow of gas.

Ntsbnumber: PLD72XR004

Report Number: PAR-72-02

Addressee Name: Equitable Gas Company

Addressee Status: Closed--No Longer Applicable

Addressee Date Closed: 1975-12-30

Addressee Acronym: EQT

Addressee Organization Type: P-Private Industry

Communication Date: 1972-12-21

Communication Type: Official Correspondence

Communication Contents: LTR FROM EQUITABLE: WRITTEN WORK PROCEDURES ARE BEING DEVELOPED TO ENCOMPASS VIRTUALLY EVERY WORK OR JOB FUNCTION.

Addressee Acronym: EQT

Addressee Organization Type: P-Private Industry

Communication Date: 1978-06-09

Communication Type: Official Correspondence
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