S.C. Code Regs. § § 103-483
Before permitting the initial use of gas at any location, a certificate of inspections and tests of the customer-owned piping shall be furnished the gas system by the customer or by the local inspecting authority. All such inspections and tests shall be made in accordance with applicable local codes. In the absence of a local code such inspections and tests shall be in accordance with minimum standards set forth in the latest edition of Southern Standard Gas Code, and the customer or his contractor shall furnish the gas system a certificate of such inspections and tests. The gas system shall advise the customer of this requirement upon initial application for gas service. When gas is turned on by the gas system, the gas system shall take reasonable precaution to prevent potential hazards and, as a minimum precaution, shall make a check for leakage using the gas meter in accordance with a procedure at least equal to that described in the latest edition of the American Standard Installation of Gas Appliances and Gas Piping ASA Z21.30. A visual examination of gas utility owned exposed piping and components thereof, along with soil and vegetation conditions in the general vicinity of buried piping and components shall be conducted as a minimum precaution for the discovery of any existing or potential hazards.
S.C. Code Regs. § 103-483