How does lockout promote safety in the workplace?

Neutralize energies to better control the risk of accidents. The principle of energy 0 by padlocking or locking means to cut the energy source of a machine to stop and secure it during work, in order to protect the worker. Lockout is an effective means of prevention when the protective elements cannot be used.


In 2018, the CNESST reported more than
23,000 occupational accidents related to contact with moving objects or equipment, the second largest category of occupational injuries.

The causes of these accidents are as follows: “Being struck, struck, trapped or crushed by an object or equipment, friction or abrasion by friction or pressure and other contact with objects or equipment”.

In view of these risks that can cause serious injuries, the CNESST has zero tolerance for the dangers associated with moving parts of machines.

Consult our training on Lockout (only in French).


CNESST Investigation

“On September 3, 2015, a worker finalizes the installation of a guide in the winding machine of a machine used to manufacture aluminum alloy rod. To perform the task, he accesses the top of the winder mandrel and crouches. A piece of equipment called the top pane is located at the top of it. Suddenly, the top shutter drops and wedges the worker against the chuck.

Consequence: the worker dies.

Causes: 1) The upper flap of A-winder starts to move and crushes the worker.
2) Repair work is carried out in A-winder while the equipment is energized.
3) Poor planning of the A-winder commissioning activities exposes workers to hazards. “

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