What testing must be performed after modifying gas piping or appliances?

What testing must be performed after modifying gas piping or appliances?

• A. Re-testing for leaks and proper operating pressure per code after modifications.
• B. Visual inspection only.
• C. No testing required.
• D. Test gas meter accuracy.

Answer: (A)

After making changes to gas piping or appliances, you must re-test to confirm there are no leaks and that the system is delivering the correct operating pressure in accordance with code. This isn’t just a visual check—hidden leaks or improper pressure can create fire, ignition, or combustion hazards and can lead to unsafe operation of the appliances. Testing typically involves verifying the joints and connections hold pressure without escaping gas and checking that the regulator and supply pressure match the appliance requirements. Visual inspection alone can miss leaks or pressure problems, and testing gas meter accuracy isn’t part of the retest for piping or appliance modifications.

After making changes to gas piping or appliances, you must re-test to confirm there are no leaks and that the system is delivering the correct operating pressure in accordance with code. This isn’t just a visual check—hidden leaks or improper pressure can create fire, ignition, or combustion hazards and can lead to unsafe operation of the appliances. Testing typically involves verifying the joints and connections hold pressure without escaping gas and checking that the regulator and supply pressure match the appliance requirements. Visual inspection alone can miss leaks or pressure problems, and testing gas meter accuracy isn’t part of the retest for piping or appliance modifications.