Before conducting hydro testing, what important step should be taken?

Before conducting hydro testing, physically walking down the system to check liners is crucial for ensuring the integrity and safety of the system being tested. This step allows for an inspection of the equipment and the surrounding area to identify any potential issues, such as existing damage, corrosion, or any other anomalies that could lead to unsafe conditions during the hydro testing process.

Inspections help verify that all components are in proper condition and can handle the pressure of the hydro test, reducing the risk of failure and improving overall safety during the testing. By ensuring that the system is free from visible signs of wear or defects, you are taking a proactive approach to safety, which is essential in high hazard facilities.

Other steps, such as checking for leaks or notifying personnel, are also important but occur within the context of ensuring the system is ready for testing after confirming it is safe. Performing a pressure test on the backflow preventer is specific to that component rather than the entire system, making the physical walk-through a more comprehensive safety check before proceeding with hydro testing.