General UK Lockout/Tagout Procedure
ONLY TRAINED & AUTHORISED PERSONNEL ARE PERMITTED TO LOCK OFF EQUIPMENT.
Prepare for shutdown.
Identify the type of energy used to operate the equipment.
Ensure that any secondary energy sources are also identified.
Identify the amount of energy used to operate the equipment.
Identify the potential hazards of that energy.
Locate the method of controlling that energy (switches, breakers, valves etc.)
Inform all affected employees.
Identify all employees who may be affected by the shutdown of equipment and inform them of the shutdown.
Ensure they know who is locking off the equipment and why.
Turn off the equipment.
Turn off the equipment using the operator controls
Follow the standard procedure for shutdown and ensure no-one is at risk when doing so.
Isolate all energy sources.
Ensure that ALL energy sources have been isolated.
Ensure that any secondary energy sources are isolated.
Ensure that ALL stored energy in the equipment is dissipated, e.g.
relieving trapped pressure.
releasing tension in sprints or block their movement.
block or brace parts that may fall due to gravity.
block parts in hydraulic and pneumatic systems that could move due to loss of pressure
bleeding, venting, flushing pipes with liquids or gases, ensuring appropriate precautions are taken against hazardous contents.
dissipating heat or cold and wear appropriate protective clothing.
Monitor and react to situations where stored energy can re-accumulate.
Lock off switches.
Lock off all switches or other energy controls (e.g. valves, circuit breakers) by using a suitable lock off device.
Only devices specifically designed for locking out should be used.
Each person working on the equipment should have their own personal padlock.
Each personal working on the equipment should place their padlock on the locking off device.
If the isolation device cannot support the number of padlocks needed, use a hasp or other suitable devices as necessary.
Apply purpose designed tags to the lockout to warn employees of the danger of the re-energising the equipment. These tags should be fit for purpose – durable, resistant to environmental conditions and attached securely to the lockout device.
Ensure the details of the tags are completed in full.
Test the equipment controls and circuits.
Make sure that all danger areas are clear from personnel and switch on the equipment.
Press ALL the start buttons or activation controls on the equipment to test the correct circuits have been isolated.
Test all of the circuits using the appropriate testing equipment to ensure that they have all been isolated.
Verify the main disconnect switch or circuit breaker can not be turned on.
When preforming the maintenance of the equipment ensure that your actions will not reactivate the equipment.
If modifying or installing new equipment ensure that your actions will not reactivate the equipment.
If modifying or installing new equipment do not bypass the lockout.
When maintenance is complete ensure the correct reactivation procedure is followed to ensure the safety of both the person(s) working on the equipment and any employees that may be affected.