Dangerous energy type
Hazardous energy: any energy source, electrical, mechanical, hydraulic, pneumatic, chemical, thermal, or any other energy source that, if not controlled, may cause injury to persons or damage to property.
Electrical hazard: the presence of electrified wires or components that may cause injury or property damage.
Mechanical hazard: the presence of a system, equipment, or machine when it is operated unexpectedly, or when the release of stored energy by the system, equipment, or machine for adjustment, maintenance, or service causes injury to persons and property damage.
Process hazards: where the unexpected release of gas, liquid or solid may cause injury and property damage.
These hazards may exist when installing, manufacturing, servicing and servicing pipes, containers or cleaning related equipment.
Isolation options should consider the following:
Quasi - isolation device for special needs
Technical requirements for mounting locking devices
Buttons, selectors, and other control circuits cannot be used as hazardous energy isolators
Control valves and solenoid valves cannot be used as fluid isolation devices alone
In cases where isolation cannot be fully confirmed by test, test confirmation shall be performed
To prevent the possible re-accumulation of energy, such as a long cable with high capacitance
A system or device contains stored energy
In complex or high energy power systems, consider installing protective grounding
To disable movable power equipment
Determine the isolation point:
Manually operated circuit breakers
Cut off the switch
Disconnect the circuit from all ungrounded supply wires with a manual switch and prevent all electrodes from operating alone
Blind flange, blind plate and physical disconnection
Mechanical blockage or similar device used to block or isolate energy sources
Control valves and solenoid valves are not designed to provide adequate fluid isolation