Which of the following is NOT a safety precaution to take when putting gas back into service?

The correct choice indicates the action that should not be taken when putting gas back into service. Skipping the soap test is not a safety precaution because the soap test is an essential method for checking for gas leaks. It involves applying a soapy water solution to gas piping joints and connections where leaks are suspected. If any bubbles form, it signifies a gas leak, highlighting the need for immediate action to mitigate potential hazards.

Conducting a pipe tightness test, isolating all end-use equipment, and obtaining the appropriate gas authorization are all critical safety precautions. The pipe tightness test ensures that there are no leaks in the system, while isolating equipment helps prevent any risks associated with gas being supplied to devices that could malfunction. Finally, obtaining authorization from the city's Department of Buildings is crucial for compliance with local regulations and ensures that all safety protocols are followed.