What are the main health hazards associated with lasers, Other Subject

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Question:

a) Name the two main types of vibration that could affect workers' health. What is the maximum Exposure Limit Value for hand-arm vibration that an employee may be exposed to on any single day?

b) Name five components of a typical local exhaust ventilation system and their respective functions.

c) Briefly describe the two main cold-induced illnesses that employees may suffer from when working in cold rooms?

d) Laser beams are used in materials processing, research, medicine, entertainment, telecommunications and military. What are the main health hazards associated with lasers?

e) Internal combustion engine-powered forklift trucks must not be used in areas where adequate ventilation cannot be guaranteed. Why? What type of forklift is acceptable in cold rooms?


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