Rules & Regulations of the State of Tennessee
Title 1220 - Tennessee Public Utility Commission
Subtitle 1220-04 - Division of Public Utilities
Chapter 1220-04-05 - Regulations for Gas Companies
Section 1220-04-05-.26 - UTILITY INSPECTIONS AND TESTS

Universal Citation: TN Comp Rules and Regs 1220-04-05-.26

Current through September 24, 2024

(1) Each utility shall make inspections and tests of meters and associated metering devices as follows:

(a) Pre-installation Inspections and Tests

Every meter and/or associated metering devices shall be inspected, tested, and sealed before being placed in service, and the accuracy of each meter shall be within the tolerances permitted by Rule 1220-4-5-.27.

(b) As Found Tests

All meters and/or associated metering devices shall be tested after they are removed from service. Such tests shall be made before the meters and/or associated metering devices are adjusted, repaired, or retired.

(c) Leak Tests

Repaired meters, and meters that have been removed from service, shall be leak tested prior to installation. New meters shall be leak tested in accordance with a sampling method acceptable to the Authority. Each meter tested shall be subjected to an internal pressure of at least twenty (20) inches W.C. and checked for the presence of leaks by one of the following tests:

1. Immersion test.

2. Soap test.

3. Pressure drop test of a type acceptable to the Authority.

(d) Request Tests

Upon request by a customer and accompanied by a payment of five dollars ($5), the utility shall make a test of the meter serving him, provided that such tests need not be made more frequently than once in eighteen (18) months.

1. The customer, or his/her representative, may be present when his/her meter is tested.

2. A report of the results of the test shall be made to the customer within a reasonable time after the completion of the test, and a record of the report, together with a complete record of each test, shall be kept on file at the office of the utility.

(e) Periodic Tests

Unless otherwise authorized by the Authority each utility shall make periodic tests of meters, associated devices and instruments, to assure their accuracy. Such tests shall be scheduled within the calendar year, or earlier, when the interval shall not be longer than provided for in the following schedule where applicable. (Note: Maintenance programs suggested by manufacturers of the following meters and devices should be carefully followed.)

1. Positive displacement meters
(i) Up to 250 c.f. / hr.........................10 years
(ii) 250 c.f. / hr..........................7 years
2. Orifice meters ..............................6 months
(i) Plates and Tubes ........................2 years
3. Base pressure correcting devices .................... 2 years
4. Base volume correcting devices .......................2 years
5. Secondary standards
(i) Test bottles, one cubic foot .....................10 years
(ii) Dead weight testers ..................6 months- minimum
6. Working standards
(i) Bell provers.............................3 years
(ii) Rotary displacement test meters .....................5 years
(iii) Flow provers ..........................5 years
(iv) Laboratory quality indicating pressure gauges .............6 months
(v) Temperature recorders .......................6 months
(vi) Gravitometers .......................6 months

Authority: T.C.A. § 65-2-102.

Disclaimer: These regulations may not be the most recent version. Tennessee may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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