My supertentint wants to put a hasp on the MDP panel door to use as a lockout for all breakers in the panel for workers to lockout equipment. I say that each breaker should have its own lockout, due to the fact some emergency may arise with the panel door locked and there would be no access to a breaker to shut it off.
Please email me with your comments or replies and where I can find it in the NEC or OSHA standards.
Thanks
A quick comment: OSHA (29-CFR) and the NEC (NFPA70) are considered by OSHA to be insufficient for dealing with Industrial Machinery.
Industrial machinery is typically motorized therefore:
430.87 Each machine has its own controller set at the machine serviced by
430.102(A) a disconnecting means that must be "in sight of" the machine
which is typically mounted on the main electrical panel.
By generally acceptable practice (NFPA79:2007:9.2.5.3.1) each machine has an uncontrolled stop mechanism: Usually the disconnect on the main electrical panel which is usually used for LOTO.
Although there is no restriction that keeps you from doing LOTO further upstream at a breaker panel
NFPA70E:2009:120.2(D)(3)(b) requires a fully written up procedure for executing your LOTO. A breaker panel that creates a LOTO point for multiple machines would be deemed to be a "
complex" procedure. It also requires that there be a specific person in charge who is held responsible for its safe execution
according to the written procedure.