Which type of alarm system is required for a vapor recovery installation?

In a vapor recovery installation, a failure evacuation alarm is essential for ensuring the safety and operational integrity of the system. This type of alarm monitors the vapor recovery system's performance and detects any failures that could lead to hazardous situations, such as leaks or inadequate vapor capture. If the system fails to operate correctly, the alarm notifies personnel to take immediate action to avoid potential risks, which could include environmental damage or risks to safety.

While other alarms, such as gas leak, evaporation, and temperature alarms, may play roles in monitoring different aspects of facilities or processes that handle volatile substances, they don't specifically address the unique requirements of vapor recovery systems in the context of signaling operational failures. The failure evacuation alarm is particularly focused on identifying failure conditions within the vapor recovery mechanism, which is crucial for compliance with environmental regulations and for protecting both workers and the public from exposure to harmful vapors.