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Interpretation Response #PI-75-046 ([Dell, Craighill, Fentress & Benton] [David B. Falk])

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

Interpretation Response Details

Response Publish Date:

Company Name: Dell, Craighill, Fentress & Benton

Individual Name: David B. Falk

Location State: DC Country: US

View the Interpretation Document

Response text:

October 1, 1975

Mr. David B. Falk
Dell, Craighill, Fentress & Benton
888 Seventeenth Street, N.W.
Washington, D.C. 20006

Dear Mr. Falk:

This refers to your letter dated September 4, 1975, which we
received on September 12, 1975, requesting an interpretation of
the period required by 49 CFR 195.302(b) for hydrostatically
testing a pipeline. Section 195.302(b) requires that the test
pressure be "maintained for at least 24 hours." You ask whether
the requisite period means 24 continuous hours or whether a
cumulation of 24 hours is permitted.

The purpose of Section 195.302(b) is to require that the test
pressure be maintained for a continuous 24 hour period to exhibit
any leakage. There is nothing in the context of the regulation
as a whole from which to infer a different meaning. More
important, the effect of the test would be vitiated if it were
conducted over different periods totalling 24 hours, with the concomitant relaxation of pressure and repressuring.

We appreciate your interest in pipeline safety.

Sincerely,

Cesar DeLeon
Acting Director
Office of Pipeline
Safety Operations

Regulation Sections

Section Subject
195.302 General requirements