726 Introduction to Machine Guarding

Non-Mechanical Hazards

While this course focuses primarily on concepts and techniques for safeguarding employees from mechanical hazards with moving parts, machines may also present a variety of non-mechanical hazards that should not be ignored. In this section, we'll briefly remind you of some non-mechanical hazards that can impact your safety and affect the safe operation of machines.

Electricity

All power sources for machines are potential sources of danger. When using electrically powered or controlled machines, for instance, the equipment as well as the electrical system itself must be properly grounded. Replacing frayed, exposed, or old wiring will also help to protect the operator and others from electrical shocks or electrocution. High pressure systems, too, need careful inspection and maintenance to prevent possible failure from pulsation, vibration, or leaks. Such a failure could cause, among other things, explosions or flying objects.

Noise

Noise can startle and disrupt concentration, and can interfere with communications, thus hindering the worker's safe job performance. Engineering controls such as sound-dampening materials, and personal protective equipment can help control the harmful effects of noise. Administrative controls that involve removing the worker from the noise source can also be an effective measure when feasible.

Harmful Substances

Workers in the vicinity of machines that require the use of cutting fluids, coolants, and other potentially harmful substances may need protection. These substances can cause ailments ranging from dermatitis to serious illnesses and disease. Specially constructed safeguards, ventilation, and protective equipment and clothing are possible temporary solutions to the problem of machinery-related chemical hazards until these hazards can be better controlled or eliminated from the workplace.

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