West Virginia Code of State Rules › Agency 150 - Public Service Commission › Title 150 - EXEMPT LEGISLATIVE RULE PUBLIC SERVICE COMMISSION › Series 150-07 - Rules For The Government Of Water Utilities › Section 150-7-8 - Inspections and Tests

Current through Register Vol. XLI, No. 28, July 12, 2024
8.1. Meter
				testing facilities and equipment.
8.1.1.
				Testing facilities. -- A utility shall provide or have access to laboratory
				meter-testing facilities that are necessary to perform the tests required by
				these rules or by orders of the Commission. The testing facilities are subject
				to the approval of the Commission, and shall be available at all times for
				inspection or use by any member or authorized representative of the
				Commission.
8.1.2. Tests required;
				Reports to Commission. -- A utility shall, as a minimum requirement, conduct
				the tests required by these rules with such frequency, and in such manner, and
				at such places as provided herein or as may be approved or ordered by the
				Commission. A utility shall make yearly reports, in accordance with the
				requirements of the Commission, in the annual report, of meter tests, number of
				customers and amount of refunds. These reports must be filed not later than
				thirty (30) days after the expiration of the period covered by the
				reports.
8.1.3. General testing
				equipment. -- A utility furnishing metered water service shall own and maintain
				the equipment necessary to accurately test all types and sizes of meters
				employed for the measurement of water unless the utility has made arrangements
				to have the testing done in a shop or laboratory containing equipment
				acceptable to the Commission. The utility shall promptly report in writing to
				the Commission all alterations or repairs to meter testing equipment that might
				affect the accuracy or method of operation of such equipment.
8.1.3.a. The utility shall hold for all
				testing instruments and other equipment, a certificate signed by a proper
				authority giving the date when the instrument was last certified and adjusted,
				and certificates, when superseded, shall be kept on file in the office of the
				utility.
8.1.3.b. Shop testing
				equipment. -- Testing equipment shall consist of calibrated tanks large enough
				to hold the equivalent volume needed to move the test dial one or more complete
				revolutions. It is recommended that the calibrated tanks hold not less than the
				quantity needed to test meters in accordance with the test requirements of the
				American Water Works Association (AWWA) found in the Water Meters Section of
				Manual M6, Denver (1986). The equipment shall have the proper valves, gauges,
				and flow devices to determine the flow rate in gallons per minute and to check
				the pressure on the intake side of the meter.
8.1.3.c. Field testing equipment "Prover
				Meter". -- Testing equipment shall consist of a calibrated meter(s) with proper
				discharge valves and gauges to adjust the flow on the outlet side of the prover
				meter. The utility shall test and calibrate the field testing equipment against
				a certified calibrated tank not less than once each year, or more frequently if
				circumstances warrant, and ensure that a record of testing accompanies the
				field test equipment when in use. It is recommended that the test record be
				plotted as an accuracy curve in graph form so that operating error may be
				determined easily. The error of the prover meter as a correction factor when
				computing final accuracy of meters tested in place by using the following
				formula:
Click Here
				  To View Image
where: MV = volume recorded on meter tested
PV = volume recorded on prover meter
PA = accuracy of prover meter at tested flow rate (in
				  %).