Some enterprises in Europe and America adopt LOTO system (lock out &tag out) to ensure the safety of maintenance, debugging and engineering operation.
What is LOTO?
LOTO is the lockout tagout system. Through the establishment of the above lockout-and-tagout safety procedures for different equipment and systems (just like the domestic safety maintenance regulations and electrical maintenance operation regulations), the dangerous energy can be effectively controlled, and the lockout tagout can be implemented to ensure the safety of explosive personnel and equipment.
The tag mentioned. The locks mentioned include: special hasp -- -- for locking; Circuit breaker clip --- for electrical locking; Valve cover --- for locking of valve; Plug cover -- -- used for locking electrical plugs.
So how does LOTO work?
Must know
Working on unfamiliar equipment can be dangerous.
2. Locks can only be locked by trained and authorized personnel;
3. Only do the locking and listing system that requires you to do;
Never use someone else's lock or tag
If you need more locks, call your monitor and supervisor.
Step 6 program
1. Prepare to shut down the equipment:
Obtain the safety maintenance regulations of the equipment (the lock and shingle above are the main ones)
If not, fill out work permits and similar forms
Understand equipment risks
Others will be notified of who is being shut down
2. Turn off the device
Use the normal shutdown procedure
Turn all switches to off position
Close all control valves
Block off all energy sources to make them unusable
Isolate all energy sources
Close the valve
Disconnect switches and link heads
4. Lockout tagout
The valve
Switches/electrical circuit breakers;
Block or disconnect all line connections
locked
5. Release or block all stored energy
Capacitance discharge
Block or release spring energy
Block lifting parts
Prevent flywheel rotation
Release system pressure
Discharge liquid/gas
System cooling
6. Confirm equipment isolation:
Make sure all other personnel are clear
Confirm that the locking device is in safe position
Confirm the isolation
Start working as normal
Turn the control switch back on/off
Contact LOTO
Check equipment and location
Ensure all mechanical protective equipment
Remove tools from equipment
Inform others that they will test/start;
Restore system connection
Remove the LOTO
Restore equipment to normal
Normal startup.
After a comprehensive understanding of LOTO, the following points should also be mastered:
All persons, including supplier employees, must comply with this LOTO procedure;
Only the person lockout tagout, or the supervisor with the listing officer's permission, can remove the lock and listing.
Even if someone has already put a lock on the device's hangtag, you still need to put your lock and tag on it.
