Plant and machinery can pose a wide range of hazards to workers and bystanders. These hazards can’t be dealt with in isolation because one hazard can lead to another – for example, entanglement with a rotating part can lead to drawing-in and eventually crushing.
Machinery hazards can be sub-divided into mechanical hazards and non-mechanical hazards.
Mechanical hazards include crushing, shearing, cutting or severing, entanglement, drawing-in or trapping, impact, stabbing or puncture, friction or abrasion and high-pressure fluid injection or ejection.
Non-mechanical hazards are dependent on the type of machinery, which may include; electrical, noise, vibration, radiation and ergonomic hazards.
Guarding offers a viable solution for mechanical hazards, if you can’t eliminate or reduce the hazard in any other way. Guards should be chosen in the following order of priority:
1. Where you don’t need access to the danger zone under normal operation:
• Fixed guard.
• Interlocking guard.
• Trip device.
2. Where you do need access to the danger zone under normal operation:
• Interlocking guard.
• Automatic guard.
• Trip device.
• Adjustable guard.
• Self-adjusting guard.
• Two-hand control.
The condition of plant or machinery should be inspected on a regular basis to ensure that it remains in good condition and all safety features including guards and stop controls are operational.
• Suitable for its purpose.
• Set-up and used to minimise risks.
• Well-maintained.
• Inspected.
• Operated by trained users.