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Interpretation Response #PI-92-024

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

Interpretation Response Details

Response Publish Date: 06-29-1992
Company Name: Indiana Gas Company    Individual Name: Ronald J. Boes
Location state: IN    Country: US

View the Interpretation Document

Response text:

June 29, 1992

Mr. Ronald J. Boes
Manager of Gas Systems
Standards & Procedures
Indiana Gas Company
1630 North Meridian Street
Indianapolis, IN 46202-1496

Dear Mr. Boes:

This responds to your letter of April 17, 1992, to Mr. Richard Sanders of the Transportation Safety Institute in which you ask if the 3/8" external line on the Sprague CL34-2 IMR regulator is a "static or control line" as set forth in Section 192.197.

The "static or control line" in Section 192.197(a)(6) is a line that runs from the regulator to the downstream side of the regulator used to communicate that pressure to the regulator. The 3/8" external tubing on the Sprague CL34-2 IMR is not a static or control line, but a supply line supplying high pressure gas from the inlet side of the regulator to the pilot to establish the set point; i.e., the outlet pressure of the regulator.

I trust that this has adequately responded to your question.


Cesar De Leon
Regulatory Programs
Office of Pipeline Safety

Regulation Sections

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