When the equipment or tools are being repaired or cleaned, the power supply is cut off and the equipment or tools cannot be moved. All energy sources (electricity, hydraulic pressure, air pressure, etc. ) It's all off. The purpose is to ensure that no one is injured when working next to the machine.
Locking is to ensure that once the device is turned off, it will remain in a safe state. Locking helps prevent people from accidentally starting the equipment and causing injury or death.
Why use locks/tags?
Occupational Safety and Health Administration:
"Employers must establish safety procedures, install appropriate locking/marking devices and energy isolation devices according to the procedures, stop machines or equipment to prevent unexpected energy supply, and start or store energy release to prevent employees from being injured".
Prevent misoperation
Prevent accidents
Be nipped in the bud
Where do you use locking/marking?
power switch
Air source switch
Pipeline valve
Where warnings need to be highlighted.
Other places where authority management is required.
Application industry:
All manufacturing industries:
automobile
Chemistry, petroleum, natural gas
make paper
other
Public utilities:
power plant
tears
nuclear power plant
build
Transportation/distribution center
food processing
Public organizations: (hospitals, schools, etc. ):
maintenance of equipment
Drugs/drugs
How to use locks/tags?
Step 1: Prepare
Prepare to turn off the power. Identify energy types (electric energy, mechanical energy ...) and their potential hazards. Put the isolation device in place and prepare the light energy ratio.
Step 2: Notice
Notify operators and supervisors who may be affected by the isolated machine of the work being done.
Step 3: Close
Turn off the equipment or machine.
Step 4: Lock.
Lock all energy sources with the appropriate master locking device to shut down the equipment or machine. Locking ensures that no one can open the switch or valve. The main lock locks the warning label to prevent accidental operation.
Step 5: Test
Test all machine controls and circuits to ensure complete energy isolation.
Step 6: Maintenance
For maintenance.
Step 7: Restore normal operation.
When all work is completed and the locking/marking device is released, please confirm that all tools and mechanical circuit locking devices have been removed. Please be sure to inform all workers before re-supplying energy.