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Interpretation Response #PI-89-009 ([Long Island Lighting Company] [Ellen Bardenhagen])

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

Interpretation Response Details

Response Publish Date:

Company Name: Long Island Lighting Company

Individual Name: Ellen Bardenhagen

Location State: NY Country: US

View the Interpretation Document

Response text:

June 9, 1989

Mr. Ellen Bardenhagen

Gas Engineering Department

Long Island Lighting Company

175 East Old Country Road

Hicksville, New York 11801

Dear Ms. Bardenhagen:

Thank you for your letter requesting clarification of the requirements for qualifying mechanical joining methods for plastic pipe. We understand your question to be whether the word "material" as used in §192.283(b)(7) refers to any class of plastic polymers (e.g., 2306 polyethylene) or to a specific polymer within a class used by a particular pipe manufacturer.

The qualification of a mechanical joining method depends on the tensile strength of the pipe material under load, as opposed to the physical-chemical properties that are pertinent for other joining methods (e.g., heat fusion, solvent cement). Since each class has a minimum tensile strength, a class of plastic polymers suffices to describe the material for which a mechanical joining method is qualified. Therefore, test information that qualifies a mechanical joining method for use on one manufacturer's pipe made from a specific polymer in a class would also qualify that method for use on any other manufacturer's pipe made from any other polymer in that class.

I hope that this discussion has clarified the issue for you. If you have any further questions, please contact me.


Richard L. Beam


Office of Pipeline Safety

Regulation Sections

Section Subject
192.283 Plastic pipe: Qualifying joining procedures