Interpretation Response #PI-92-032
Below is the interpretation response detail and a list of regulations sections applicable to this response.
Interpretation Response Details
July 16, 1992
Mr. Brian E. Pierzina
Senior Engineer
Office of Pipeline Safety
Minnesota Department of Public Safety
175 Aurora Avenue
St. Paul, MN 55103-2356
Dear Mr. Pierzina:
I am responding to your letter of June 29, 1992, to George W. Tenley, Jr., about the uprating requirements of Subpart K of 49 CFR Part 192.
Specifically, you asked whether § 192.557(b)(6) applies only when a low pressure distribution system is uprated to a high pressure distribution system. Because § 192.557(b)(6) requires the installation of service regulators, the purpose of this regulation is to require proper pressure controls when a low pressure distribution system is uprated to a high pressure distribution system. As these regulators would already be in place on high pressure distribution systems, § 192557(b)(6) does not apply to the uprating of a high pressure distribution system.
Sincerely,
/signed/
Cesar De Leon
Director, Regulatory Programs
Office of Pipeline Safety
Regulation Sections
| Section | Subject |
|---|---|
| § 192.557 | Uprating: Steel pipelines to a pressure that will produce a hoop stress less than 30 percent of SMYS: plastic, cast iron, and ductile iron pipelines |