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Interpretation Response #PI-74-0133 ([Tennessee Public Service Commission] [Mr. John Searcy])

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date:

Company Name: Tennessee Public Service Commission

Individual Name: Mr. John Searcy

Location State: TN Country: US

View the Interpretation Document

Response text:

Mr. John Searcy
Tennessee Public Service Commission
Cordell Hull Building
Nashville, TN 37219

Dear Mr. Searcy:

Thank you for your letter of July 26, 1974, asking whether 49 CFR 192.197 (a) provides for protection against overpressure due to failure of a regulator.

Sections 192.197(a) and (b) protect against unsafe operation of gas utilization equipment due to overpressuring by a distribution system. Paragraph (a) sets forth criteria for a service regulator to provide this protection. Under paragraph (b), where a regulator does not meet that criteria, the operator must install suitable devices to protect against overpressure when the regulator fails. The problem of providing protection against overpressure due to failure of a regulator which meets the criteria of paragraph (a) is not addressed by the regulation.

We trust our response is helpful to you.


Joseph C. Caldwell
Office of Pipeline Safety

Regulation Sections

Section Subject
192.197 Control of the pressure of gas delivered from high-pressure distribution systems