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Interpretation Response #PI-73-014 ([Alabama Public Service Commission] [Larry E. Waldrop])

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

Interpretation Response Details

Response Publish Date:

Company Name: Alabama Public Service Commission

Individual Name: Larry E. Waldrop

Location State: AL Country: US

View the Interpretation Document

Response text:

Mr. Larry E. Waldrop

Utilities Engineer

Alabama Public Service Commission

P. O. Box 991

Montgomery, Alabama 36102

Dear Mr. Waldrop:

This is in reply to the two questions asked in your letter of June 1, 1973.

Question: "...under 192.619 and 192.621. If a gas system is an all steel system and designed and tested for a 100 lb. system and has only operated at 30 lbs. for the last ten years, what is his M.A.O.P.?"

Answer: This system is governed by §192.619(c) which, in effect, allows the pipeline to
operate at the highest actual operating pressure to which it was subjected during the 5 years
preceding July 1, 1970. In the given case, the system operated only at 30 lbs. in that 5-year
period. The M.A.O.P. is, therefore, 30 lbs.

Question: "...where a school is master metered and distributes the gas through its own piping to different buildings and they are ultimate consumers, would they be under gas pipeline safety regulations?"

Answer: One of the characteristics of a master meter system that makes it subject to the
regulations is a transfer of the gas from the operator to other persons who are the ultimate
consumers of the gas. In the situation described, however, the school taking delivery on gas
through the "master" meter is not reselling or distributing any of the gas to any other person.

Where the gas is being used entirely by school employees for school purposes on school property, the gas system is not subject to the federal gas pipeline safety regulations.

If you have further questions in this regard, please contact us.



Joseph C. Caldwell


Office of Pipeline Safety

Regulation Sections

Section Subject
192.1 What is the scope of this part?
192.619 Maximum allowable operating pressure: Steel or plastic pipelines
192.621 Maximum allowable operating pressure: High-pressure distribution systems