A worker was killed when he was crushed to death in a chipper machine. Someone started the conveyor at the operator’s console after the worker, who was completing repairs on the machine, had descended into the conveyor to retrieve a tool.
A worker amputated two fingers and part of his left hand when another worker turned on the saw from which he was removing debris.
A worker required 14 stitches to his right hand after he reactivated a bending machine while changing the die. He accidentally touched the foot pedal, which activated the machine, and the die lowered on his right hand.
|a)||No employee can work on the machine until a competent person has put the machine in a zero energy state (see Zero Energy State – Safety Considerations, below).|
|b)||Each employee working on the machine must: verify that all potential energy sources have been made inoperative; lock out the machine using the safety lock and key provided by the employer; and attach a tag to the lock.|
|c)||Only the person who installed the lockout device or tag on a machine may remove it, except in an emergency, or where attempts have been made to contact the original installer.|
A lockout procedure or code of practice should take into consideration more than just power sources for a given machine. Anything that could cause the machine to spontaneously or unexpectedly move is a risk to workers, including:
|-||Pressurized fluids and air.|
|-||Potential mechanical energy.|
|-||Accumulators and air surge tanks.|
|-||Kinetic energy of machine members.|
|-||Loose or freely moveable machine members.|
|-||Moveable material or work pieces that are supported, retained or controlled by a machine and that could move or cause the machine to move.|
For more information about lockout, see sections 239 to 240 of General Regulation 91-191, under the Occupational Health and Safety Act of New Brunswick.