# NTSB Safety Recommendation P-74-025

- **operation:** document
- **citation:** P-74-025
- **title:** NTSB Safety Recommendation P-74-025
- **source type:** guidance
- **agency:** National Transportation Safety Board
- **status:** guidance
- **official:** true
- **published on:** 1974-03-11
- **effective on:** 1974-03-11
- **summary:** THE NTSB RECOMMENDS THAT THE MISSOURI PUBLIC SERVICE COMPANY: DEVELOP A SECTIONALIZING PROGRAM OF ITS HIGH-PRESSURE DISTRIBUTION SYSTEM SO THAT PREPLANNED PROCEDURES ARE AVAILABLE TO ISOLATE ANY SECTION OF ITS SYSTEM IN AN EMERGENCY.
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- **source url:** https://data.ntsb.gov/carol-main-public/sr-details/P-74-025
**body:**

NTSB safety recommendation P-74-025.

THE NTSB RECOMMENDS THAT THE MISSOURI PUBLIC SERVICE COMPANY: DEVELOP A SECTIONALIZING PROGRAM OF ITS HIGH-PRESSURE DISTRIBUTION SYSTEM SO THAT PREPLANNED PROCEDURES ARE AVAILABLE TO ISOLATE ANY SECTION OF ITS SYSTEM IN AN EMERGENCY.

Priority: CLASS II

Overall Status: Closed - Acceptable Action

Issued Date: 1974-03-11

Adopted Date: 1974-02-27

Overall Date Closed: 1976-09-10

Synopsis: A gas explosion and fire occurred on December 9, 1972, in downtown Clinton, MO. Gas had leaked into a building from a cracked cast-iron main located behind the building. Missouri Public Service Company personnel arrived at the site of the reported leak 50 minutes before the explosion. Eight persons died, and seven others were injured.

Ntsbnumber: PLD73XR004

Report Number: PAR-74-03

Addressee Name: Missouri Public Service Company

Addressee Status: Closed--No Longer Applicable

Addressee Date Closed: 1976-09-10

Addressee Organization Type: P-Private Industry

Communication Date: 1975-02-25

Communication Type: Official Correspondence

Communication Contents: LETTER FROM MISSOURI PUBLIC SERVICE COMPANY: AT THE TIME OF THE CLINTON ACCIDENT THIS COMPANY HAD IN EXISTENCE A SECTIONALIZING PROGRAM. THIS PROGRAM IS BEING CONSTANTLY REVISED AND PRESENTLY CONSISTS OF EACH PLATTED DISTRIBUTION SYSTEM BEING DIVIDED INTO SHUTOFF ZONES, WITH ALL VALVES DESIGNATED ON SUCH PLATS, INCLUDING EMERGENCY VALVES.
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