Lockout Procedures

If locks, lockout devices, and multiple lock adapters are to be effective, they must be used properly on every occasion where they are needed. Make sure that you follow the steps of the lockout procedure below.

1. Before any equipment is locked out, there should be agreement as to the specific machine or unit to be taken out of operation. The supervisor should oversee lockout procedures.

2. Turn off the point-of-operation controls. (Remember that disconnect switches should never be pulled while under load because of the possibility of arcing or even explosion.)

3. See that the main power controls (switch, breaker, or valve) are turned OFF. Where electrical voltages are involved, do NOT attempt this yourself but have it done by a Construction Electrician.

4. After the switch has been opened or the valve closed, the person who will be doing the work should snap the locks on the control lever or multiple lock adapter. At this point, tag the switch, valve, or device being locked. Tags should indicate the type of work being done, approximately how long the job will take, and the name of the supervisor.

5. Try the disconnect or valve to make sure it cannot be moved to ON.

6. Try the machine controls as a test to ensure the main controls are really off.

7. As each person completes work, only that person should remove the lock and supplemental tag. The person removing the last lock should notify the supervisor that the work is finished and the equipment is ready to be placed back in operation.

Q20. When cleaning operations are performed, what basic personal protective equipment should be worn?

Q21. What color should the pull chain handle be painted for the center gauge cock?

Q22. You should never bring a boiler up to pressure unless what valve has been tested?

Q23. Why are key-operatedpadlocks more commonly used than a combination lock for a lockout device?