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Interpretation Response #PI-71-084

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

Interpretation Response Details

Response Publish Date: 11-23-1971
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
§ 192.619 Maximum allowable operating pressure: Steel or plastic pipelines