If a piece of equipment can be isolated, what must be installed as a safety measure?

When a piece of equipment can be isolated, installing a safety valve is essential as a precautionary measure. A safety valve is designed to prevent overpressure situations that can lead to equipment failure or hazardous conditions. It serves as a critical component in maintaining safe operational parameters. By ensuring that a safety valve is in place, it allows for the safe venting of excess pressure, thereby protecting personnel and property from potential dangers associated with the isolated equipment. This necessity arises from safety regulations that mandate protective measures for equipment that can be taken offline or has parts that can operate independently.

In this context, while safety gauges and locked valves play roles in various safety protocols, they do not directly address the need for immediate pressure relief in the event of isolation. The system's ability to run without the piece of equipment is not a sufficient safety measure by itself. Therefore, the installation of a safety valve is crucial in ensuring overall system integrity and safety when isolation occurs.