Interpretation Response #PI-83-008 ([The Duriron Company, Inc.] [Allan W. McKee])

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

Interpretation Response Details

Response Publish Date: 05/19/1983

Company Name: The Duriron Company, Inc.

Individual Name: Allan W. McKee

Location State: TN Country: US

View the Interpretation Document

Response text:

Mr. Allan W. McKee

Petroleum Market Manager

The Duriron Company, Inc. - Valve Division

P.O. Box 2609

Cookeville, TN 38502-2609

Dear Mr. McKee:

Enclosed is an interpretation of 49 CFR §192.363(b) as requested by your letter to this Office of April 26, 1983.

We hope this answers your question adequately.

Sincerely,

Richard L. Beam

Associate Director for

Pipeline Safety Regulation

Materials Transportation Bureau

Enclosure

DEPARTMENT OF TRANSPORTATION

RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION

MATERIALS TRANSPORTATION BUREAU

PIPELINE SAFETY REGULATORY INTERPRETATION

Note: This pipeline safety regulatory interpretation applies to all operators that are subject to the rule under Federal or State law.

SECTION: 192.363(b), Service lines: Valve requirements.

SUBJECT: Use of soft-seated valves.

FACTS: §192.363(b) says, "A soft seat service line valve may not be used if its ability to control the flow of gas could be adversely affected by exposure to anticipated heat."

QUESTION: Does "anticipated heat" refer to a possible fire, or simply hot gas flowing under normal operating conditions?

INTERPRETATION: "Anticipated heat" refers to any possible source of heat to which a valve may be exposed, including fire, that would make the valve inoperable. The primary industry standard that has been used to demonstrate the fire resistance of valves is "Fire Test for Soft- Seated Ball Valves," API 607.

Richard L. Beam

Associate Director for

Pipeline Safety Regulation

Materials Transportation Bureau

49 CFR Part 192

[Interpretation 83-6]

Transportation of Natural and Other Gas by Pipeline; Service Line Valve Requirements

AGENCY: Materials Transportation Bureau (MTB), Research and Special Programs Administration, DOT.

ACTION: Interpretation.

SUMMARY: The Research and Special Programs Administration (RSPA) is issuing this interpretation, of the term "Anticipated heat" as it appears in paragraph (b) of §192.363, Service line valve requirements. The interpretation was requested by a pipeline valve manufacturer. This interpretation clarifies the intent of the term "anticipated heat" and the appropriateness of certain tests used to determine that a valve does or does not comply with §192.363(b).

EFFECTIVE DATE: August 22, 1983.

FOR FURTHER INFORMATION CONTACT: Paul J. Cory, (202) 426-2082.

SUPPLEMENTARY INFORMATION: Interpretation 83-6.

Section: §192.363(b).

Subject: Use of soft-seated valves.

Facts: Section 192.363(b) says, "A soft seat service line valve may not be used if its ability to control the flow of gas could be adversely affected by exposure to anticipated heat."

Question: Does "anticipated heat" refer to a possible fire, or simply hot gas flowing under normal operating conditions?

Interpretation: "Anticipated heat" refers to any possible source of heat to which a valve may be exposed, including fire, that would make the valve inoperable. The primary industry standard that has been used to demonstrate the fire resistance of valves is "Fire Test for Soft-Seated Ball Valves." API 607.

List of Subjects in 49 CFR Part 192

Pipeline Safety.

(49 U.S.C. 1672 and 1804; 49 CFR 1.53, Appendix A to Part 1, and Appendix A to Part 106) Issued in Washington,D.C. on May 19, 1983.

Richard L. Beam,

Associate Director for Pipeline Safety

Regulation, Materials Transportation Bureau.

Regulation Sections