# NTSB Safety Recommendation P-81-037

- **operation:** document
- **citation:** P-81-037
- **title:** NTSB Safety Recommendation P-81-037
- **source type:** guidance
- **agency:** National Transportation Safety Board
- **status:** guidance
- **official:** true
- **published on:** 1981-09-24
- **effective on:** 1981-09-24
- **summary:** AS A RESULT OF SPECIAL STUDY PSS-81-1, THE NTSB RECOMMENDS THAT THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) GAS PIPING STANDARDS COMMITTEE: DEVELOP GUIDELINES, USING GAS RESEARCH INSTITUTE TEST AND EVALUATION RESULTS WHEN THEY BECOME AVAILABLE, TO ASSIST THE GAS DISTRIBUTION INDUSTRY IN DETERMINING THE CONDITIONS UNDER WHICH EXCESS FLOW VALVES SHOULD BE INSTALLED IN GAS SERVICES.
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**body:**

NTSB safety recommendation P-81-037.

AS A RESULT OF SPECIAL STUDY PSS-81-1, THE NTSB RECOMMENDS THAT THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) GAS PIPING STANDARDS COMMITTEE: DEVELOP GUIDELINES, USING GAS RESEARCH INSTITUTE TEST AND EVALUATION RESULTS WHEN THEY BECOME AVAILABLE, TO ASSIST THE GAS DISTRIBUTION INDUSTRY IN DETERMINING THE CONDITIONS UNDER WHICH EXCESS FLOW VALVES SHOULD BE INSTALLED IN GAS SERVICES.

Priority: CLASS III

Overall Status: Closed - Reconsidered

Issued Date: 1981-09-24

Adopted Date: 1981-09-09

Overall Date Closed: 1987-10-26

Synopsis: THE NATIONAL TRANSPORTATION SAFETY BOARD HAS CONDUCTED A STUDY OF EXCESS FLOW VALVES DESIGNED FOR USE IN GAS DISTRIBUTION SYSTEMS (SPECIAL STUDY--PIPELINE EXCESS FLOW VALVES, NTSB-PSS-81-1). THESE DEVICES, INTENDED TO STOP THE FLOW OF GAS TO A CUSTOMER IN THE EVENT OF A MAJOR LEAK IN THE GAS SERVICE, HAVE BEEN THE SUBJECT OF CONSIDERABLE CONTROVERSY IN RECENT YEARS.

Keywords: Excess Flow Valves

Ntsbnumber: 80564

Report Number: PSS-81-01

Addressee Name: American Society of Mechanical Engineers

Addressee Status: Closed - Reconsidered

Addressee Date Closed: 1987-10-26

Addressee Acronym: ASME

Addressee Organization Type: A-Associations

Communication Date: 1987-10-26

Communication Type: Official Correspondence

Communication Contents: FOLLOWUP LETTER--NO RESPONSE.

Addressee Acronym: ASME

Addressee Organization Type: A-Associations

Communication Date: 1987-10-26

Communication Type: Official Correspondence
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