Technical Standards and Safety Authority (TSSA) G3 Practice Exam

Which scenario is appropriate when terminating a gas line?

1. Plugging the line only

2. Using a valve and locking it

3. Embedding it underground permanently

4. Using compatible materials for capping

The correct answer is: Using compatible materials for capping

The appropriate scenario for terminating a gas line is to use compatible materials for capping. This is vital because using materials that are not suited for gas applications can lead to leaks or unsafe conditions. Capping a gas line involves sealing off the end securely to prevent gas from escaping, and the materials used must be able to withstand the pressure and potential degradation associated with gas. Using compatible materials ensures that the seal remains intact over time and under various environmental conditions, providing a safe and reliable termination of the gas line. This practice is a fundamental aspect of gas line safety and compliance with regulatory standards, preventing issues that could arise from improper sealing methods. Other scenarios mentioned—such as simply plugging the line, locking a valve, or embedding it underground—would not ensure the same level of safety and reliability as using compatible materials for capping. These methods might leave a risk of gas leaks or failures, highlighting the importance of selecting appropriate sealing techniques for gas line terminations.