Before attempting to loosen fittings or remove hoses on the SGNSC, what precaution is necessary?

Venting pressure from the system through the appropriate valve is essential before attempting to loosen fittings or remove hoses on the SGNSC (Small Gas Nitrogen Servicing Cart). This step is crucial because, when servicing gas or hydraulic systems, there can be residual pressure that may cause hoses to whip or leak fluid if they are disconnected without proper venting.

By venting the pressure, you ensure that the system is safe to work on, minimizing the risk of injury to yourself or damage to equipment. This precaution helps maintain a controlled environment, allowing for safe servicing actions to be carried out without the danger presented by high-pressure gas or fluid sprays. Other safety measures, such as disconnecting power or wearing protective gloves, are also important but do not directly address the specific hazards associated with pressure in the system.