During a hydrotest, all joints should be:

During a hydrotest, all joints should be:

• A. Left uninsulated.
• B. Left insulated.
• C. Left frost-protected.
• D. Gas-filled with inert gas.

Answer: (A)

During a hydrotest, the system is filled with water and pressurized to reveal leaks. The main goal is to see any leakage at joints clearly. Leaving joints uninsulated ensures that leaks are visible and detectable, making the test results reliable. Insulating joints could hide moisture and leaks within the insulation, making it harder to identify problem areas and potentially delaying corrective actions. Frost protection isn’t needed for the test itself, and a hydrotest uses water rather than inert gas, so filling with inert gas isn’t part of this process.

During a hydrotest, the system is filled with water and pressurized to reveal leaks. The main goal is to see any leakage at joints clearly. Leaving joints uninsulated ensures that leaks are visible and detectable, making the test results reliable. Insulating joints could hide moisture and leaks within the insulation, making it harder to identify problem areas and potentially delaying corrective actions. Frost protection isn’t needed for the test itself, and a hydrotest uses water rather than inert gas, so filling with inert gas isn’t part of this process.