What must be verified after an LP gas tank installation?

After an LP gas tank installation, the verification of a leak-free system is crucial for safety. A leak in the LP gas system can lead to serious safety hazards, including fire or explosion risks. Therefore, a thorough inspection to ensure there are no leaks is a critical step following installation. This often involves using a soap solution to check for bubbles at joints and connections or employing electronic leak detection methods.

While the other options also have relevance in the context of LP gas tank installations, they do not hold the same immediate priority when considering safety and operational integrity. A leak-free system is foundational to the safe use of LP gas, making the verification process essential after installation.