The short answer: Zero energy verification is to check that the machine does not work and that there is no hazardous stored energy left after the energy sources are separated and locked. The verification method should be specified specifically for the type of energy and equipment.
How is the work test done?
The controls are tested by the normal operating control while in a safe position.The machine should not work.After the test, the controls are brought back to a secure closed or neutral position.
How to verify electricity?
The absence of voltage is controlled with the appropriate measuring device and authorized electric staff. The work of the measuring device must be verified in a known source before and after the measurement.
How to control the stored energy?
Pressure is dischargeed, foam and moving parts are taken to a safe position, capacitive energy is removed and the parts that can move by landing are mechanically supported or blocked.
When is verification repeated?
When the isolation arrangement changes, when the work range expands or if there is a doubt that the energy source may be re-connected, control should be repeated.
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