273. When the hoistman receives a 3-bell signal, he may not respond until he has applied the service brakes of the hoist. He shall then remain at the hoist control.
However, in the event of shaft maintenance work and in other circumstances requiring a lengthy stop, the hoistman may leave the hoist control after having received a 3-bell signal under the following conditions:(1) the hoist power supply is turned off; and
(2) the hoistman remains inside the room housing the hoist control.
O.C. 213-93, s. 273; O.C. 1236-98, s. 15.