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Interpretation Response #PI-71-084 ([Citizens Gas & Coke Utility] [C. E. Kleis])

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

Interpretation Response Details

Response Publish Date:

Company Name: Citizens Gas & Coke Utility

Individual Name: C. E. Kleis

Location State: IN Country: US

View the Interpretation Document

Response text:

Mr. C. E. Kleis
Citizens Gas & Coke Utility
2020 N. Meridian Street
Indianapolis, Indiana 46202

Dear Mr. Kleis:

In reply to your letter of July 27, 1969, active corrosion is defined in Section 192.457(c) as
corrosion which, unless controlled, could result in a condition that is detrimental to public safety.

As covered by Section 192.457(b), the operator shall determine the areas of active corrosion by
electrical survey, or where electrical survey is impracticable, by the study of corrosion and leak
history records, by leak detection survey, or by other means.

In the discretion of the individual gas operator, any type of electrical survey he may wish to use
that will reveal active areas of corrosion is satisfactory. It is not the policy of the Office of
Pipeline Safety to recommend any one electrical method over another.

I trust this response will be helpful.



Joseph C. Caldwell
Acting Director
Office of Pipeline Safety

Regulation Sections

Section Subject
192.509 Test requirements for pipelines to operate below 100 p.s.i. (689 kPa) gage
192.511 Test requirements for service lines
192.619 Maximum allowable operating pressure: Steel or plastic pipelines