Before disconnecting gauges or test fittings, what is essential to do with the tank?

Releasing pressure in the tank before disconnecting gauges or test fittings is crucial for safe operations. When a tank is under pressure, disconnecting fittings can lead to the sudden release of vapors or liquids, posing a risk of spills, leaks, or hazardous exposures. Ensuring that the tank is depressurized minimizes these risks, creating a safer environment for personnel involved in the maintenance or testing of the tank.

This practice aligns with safety protocols that prioritize the prevention of accidents during maintenance procedures. Depressurization helps to ensure that any materials within the tank are stable and do not come rushing out unexpectedly, thereby ensuring compliance with regulatory and safety standards in the handling of underground storage tanks.