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The Pennsylvania Code website reflects the Pennsylvania Code changes effective through 54 Pa.B. 2336 (April 27, 2024).

52 Pa. Code § 59.20. Meter-testing equipment.

§ 59.20. Meter-testing equipment.

 (a)  General testing equipment. Each public utility furnishing metered gas service shall own and maintain the equipment and facilities necessary for accurately testing the various types and sizes of meters used by such utility for the measurement of gas, unless arrangements are made to have the testing done in a shop or laboratory containing equipment and operated in a manner acceptable to the Commission. The accuracy of provers and method of operation will be checked periodically by the Commission. Alterations, accidents, or repairs to stationary meter-proving equipment, which might affect the accuracy of the equipment or the method of operating it, shall be promptly reported in writing to the Commission. The accuracy of testing instruments and equipment used as utility standards, such as dead-weight testers and precision type pressure gauges, which are used in the testing or calibration of meters or associated metering equipment will be checked periodically by the Commission.

 (b)  Equipment for testing small capacity meters. Each public utility shall own and maintain, except as provided in subsection (a), one meter prover of approved type and of a capacity adequate for the testing of small capacity meters. Each meter prover shall be supplied with accessories needed for accurate meter testing, be located in a room suitable for meter testing, and be protected from drafts and excessive changes of temperature. If the proving system includes automatic testing equipment or any mechanical devices to provide ‘‘read-out’’ capability—the entire meter proving system, including the basic prover, shall be maintained in good condition and correct adjustment so that it will be capable of determining the accuracy of any service meter to within 0.5%.

 (c)  Equipment for testing large capacity meters. Each public utility furnishing metered-gas service through orifice, turbine, or large displacement meters—except as provided in subsection (a)—shall have available and maintain in proper adjustment test equipment suitable for determining the accuracy of any orifice or large displacement meter used by the utility to within 0.5%. If the public utility uses a transfer prover standard for testing large capacity meters, the accuracy of the transfer prover and the method of operating will be checked periodically by the Commission in conjunction with all prover tests.


   The provisions of this §  59.20 issued under Public Utility Code,66 Pa.C.S. § §  501, 1301, 1304, 1501, 1502 and 1507.


   The provisions of this §  59.20 amended through September 17, 1982, effective September 18, 1982, 12 Pa.B. 3291. Immediately preceding text appears at serial page (20967).

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