Final answer:
A piping system is required to be leak-tested when it is being installed or repaired. Leak testing ensures that there are no leaks in the system that could cause problems such as loss of pressure or contamination of the fluid being transported.
Step-by-step explanation:
A piping system is required to be leak-tested when it is being installed or repaired. Leak testing ensures that there are no leaks in the system that could cause problems such as loss of pressure or contamination of the fluid being transported.
There are different methods used to leak-test a piping system, including pressure testing and vacuum testing. Pressure testing involves pressurizing the system with air or water and checking for any pressure drop or visible leaks. Vacuum testing involves creating a vacuum in the system and checking for any pressure rise or visible leaks. The specific requirements for leak testing may vary depending on the industry and the type of fluid being transported.