Interpretation Response #PI-73-0106 ([West Virginia Public Service Commission] [Mr. T. K. Spalding])
Below is the interpretation response detail and a list of regulations sections applicable to this response.
Interpretation Response Details
Response Publish Date:
Company Name: West Virginia Public Service Commission
Individual Name: Mr. T. K. Spalding
Location State: WV Country: US
View the Interpretation Document
Response text:
Mar 22 1973
Mr. T. K. Spalding
Director, Gas Pipeline Safety Division
West Virginia Public Service Commission
Capitol Building
Charleston, West Virginia 25305
Dear Mr. Spalding:
This is in response to your letter of February 22, 1973, to Frank Fulton in which you asked if the Federal Minimum Safety Standards permit the use of approved plastic pipe for mains and service lines to distribute LPG from a central point in a mobile home park.
The Federal Minimum Safety Standards contained in 49 CFR, Part 192, Transportation of Natural and Other Gas by Pipeline permit the use of plastic pipe in mains and services with certain limitations. These limitations in general, relate to the operating temperature and pressure, and the chemical compatibility of the pipe to the product to be carried.
The major concern over using plastic in a LPG system is that of condensation in the LPG vapor. This condensation may result in a decrease of the physical and chemical properties of certain plastic pipes. Therefore, if there is any possibility of condensation of the LPG vapor in the piping system then the pipe selected must be capable of retaining its integrity with the liquid in the line.
It is the operator's responsibility to assure the integrity of the plastic pipe selected for use in the piping system and this should be based on a favorable recommendation by the manufacturer. Therefore, the Federal Minimum Safety Standards do permit the use of plastic in a properly engineered underground system of LPG distribution conforming to the limitations of these regulations.
I trust this information will clarify this matter for you. If we can be of any further assistance, please advise.
Sincerely,
Joseph C. Caldwell
Director
Office of Pipeline Safety
Regulation Sections
| Section | Subject |
|---|---|
| 192.11 | Petroleum gas systems |