초록 ▼

The invention relates to the maintenance of safety devices. Valves and similar automatic, mechanical safety devices normally maintaining a fixed position are in danger of getting stuck, and consequently may not be fully operable in an emergency situation. In a system according to the invention, real

The invention relates to the maintenance of safety devices. Valves and similar automatic, mechanical safety devices normally maintaining a fixed position are in danger of getting stuck, and consequently may not be fully operable in an emergency situation. In a system according to the invention, real-time data indicating the operability of, for example, a valve actuator, is provided. When a fault is discovered, it can be localized using online diagnostic tools. A standby state is continuously maintained, as the unit for activating the safety function is independent of the unit for monitoring the operability, and the latter is bypassed in an emergency situation.

대표청구항 ▼

[ What is claimed is:] [1.] A method for verifying the workability of a safety device and the safety system controlling it, comprising:providing a verifying system, constructed and arranged to verify the mobility of movable parts and the workability of electrical units of the safety system;providing

[ What is claimed is:] [1.] A method for verifying the workability of a safety device and the safety system controlling it, comprising:providing a verifying system, constructed and arranged to verify the mobility of movable parts and the workability of electrical units of the safety system;providing a safety function activator, constructed and arranged to activate the safety function;wherein activation of the safety function overrides the verifying system. [6.] A device for verification of the workability of a safety valve having a range of motion, comprising:at least one sensor, constructed and arranged to monitor the safety valve;an actuator, constructed and arranged to actuate the safety valve;a control unit for controlling the actuator and the safety valve; anda high level safety system,wherein the control unit verifies the workability of the safety valve by controlling the actuator to cause the valve to be moved at least partially through its range of motion and the high level safety system is constructed and arranged to actuate the safety valve into a safe position even when the control unit is controlling the actuator to verify the workability of the safety valve.