Gas Fitter Practice Test

Should a high-pressure leak test be conducted when adding more than 20 feet to an existing gas piping system?

1. Yes

2. No

3. Soap test only

4. Dial and soap test

The correct answer is: Yes

A high-pressure leak test is required when adding more than 20 feet to an existing gas piping system to ensure the integrity and safety of the whole system. This requirement stems from the fact that extending a gas line introduces additional joints, fittings, and potential failure points that could lead to leaks. Conducting a leak test under high pressure checks these new connections and the segments being added for any leaks that could pose safety hazards. Performing a high-pressure leak test provides a thorough evaluation of the gas line pressures and confirms that the system can safely handle the gas supply without risks of leakage. This is crucial for maintaining the safe operation of the system and preventing hazardous situations. While other testing methods may seem less comprehensive, they do not provide the same level of assurance about the integrity of a new installation. Therefore, the requirement to perform a high-pressure leak test aligns with best practices in gas fitting to ensure safety and compliance with regulations.