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Interpretation Response #PI-91-037 ([State of Minnesota Department of Public Safety] [Walter T. Kelly])

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

Interpretation Response Details

Response Publish Date:

Company Name: State of Minnesota Department of Public Safety

Individual Name: Walter T. Kelly

Location State: MN Country: US

View the Interpretation Document

Response text:

Mr. Walter T. Kelly

Director, Office of Pipeline Safety

State of Minnesota

Department of Public Safety

175 Aurora Avenue

St. Paul, MN 55013-2356

Dear Mr. Kelly:

This responds to your letter of August 25, requesting our opinion whether .049 square inches of exposed polyethylene pipe are acceptable under 49 CFR §192.375(a). You said the ,049 square inches of exposed polyethylene pipe are exposed to ultraviolet rays through a vent hole on a service riser.

Section 192.375(a) requires that all plastic service lines transporting gas above ground, outside a building, be protected against deterioration and external damage. Ultraviolet rays are known to deteriorate polyethylene pipe; so no exposure of polyethylene pipe to ultraviolet rays is permitted under §192.375(a).

We trust this adequately responds to your inquiry.

Sincerely,

Cesar DeLeon

Director for Pipeline Safety

Regulatory Programs

Regulation Sections

Section Subject
192.375 Service lines: Plastic