Rules & Regulations of the State of Tennessee
Title 1220 - Tennessee Public Utility Commission
Subtitle 1220-04 - Division of Public Utilities
Chapter 1220-04-03 - Water Regulations
Section 1220-04-03-.27 - TEST MEASUREMENT STANDARDS

(1) Measuring devices for test of meter may consist of a calibrated tank for volumetric measurement or tank mounted upon scales for weight measurement. If a volumetric standard is used, it shall be accompanied by a certificate of accuracy from any standard laboratory as may be approved by the Authority. If a weight standard is used, the scales shall be tested and calibrated periodically by such approved laboratory and a record maintained of the results of the test.

(2) When basic standards are used for meter tests, they shall be of a capacity sufficient to insure accurate determination of accuracy and shall be subject to the approval of the Authority.

(3) By special permission of the Authority, a standard meter may be provided and used by a utility for the purpose of testing meters in place. This standard meter shall be tested and calibrated periodically to insure its accuracy within the limits required by these rules and regulations. In any event, such test shall be made at least once every sixty (60) days while the standard meter is in use and a record of such tests shall be kept by the utility.