S.C. Code Regs. 103-471. Periodic Tests

These test periods may be extended upon application and approved by the commission, providing that the gas utility can prove by its own records that different test periods are adequate for the protection of the public. Meters may be tested and calibrated in accordance with “Sample Meter Testing Plans” approved by the commission; and gas utilities using a “Sample Meter Testing Plan” shall continue to advise the commission of the results of the operation of the plan. a. Positive Displacement Meters. (1) Up to 251 c.f./hr. (at .5 in. water column differential pressure with non-absorptive diaphragm)-Ten years. (2) 251 to 3000 c.f./hr (at .5 in. water column differential pressure)-Three years. (3) Over 3000 c.f./hr. (at .5 in. water column differential pressure)-Two years.