170 IAC 5-1-9 Periodic testing of meters

Sec. 9. A public utility may not allow a gas meter to remain in service for longer than sixteen (16) years without either: (1) checking it for accuracy and readjusting it if found to be incorrect beyond the limits established under section 8 of this rule; or (2) verifying by statistical quality control sampling as established in the approved statistical quality control program in the fifteenth year in service, and in each succeeding year the meter is allowed to remain in service that the meter in the population sampled does not exceed an average accuracy figure of one hundred two percent (102%) or two percent (2%) above absolute accuracy of one hundred percent (100%) when tested at the meter's check and open rates with an acceptable quality level (AQL) equal to ten (10.0).