Answer :
Final answer:
A leaking LPG cylinder must be repaired and tested for safety before reuse, often involving cooling the cylinder to significantly reduce the pressure and leak rate.
Explanation:
A leaking LPG cylinder may not be used after a leak is detected until it has been repaired and tested for safety. In the event of a leak, it's crucial to reduce the pressure and leak rate to ensure the cylinder can be handled safely. This can be done by cooling the cylinder to a low temperature, such as dry ice temperature (-78.5°C), as indicated in the provided references.
The goal is to lower the internal pressure by reducing the temperature of the gas inside the cylinder, under the principles of gas laws. Once the pressure is safely reduced, professional inspection and restoration can take place, followed by a thorough safety check before the cylinder can be put back into service.
