Samples Job Safety Analysis Page 20
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42Energy Barrier and Unwanted Energy Flow
Unacceptable
Noise level
Harmful noise
unacceptable
reaches ear
noise level
Noise control
Sound barrier
Ear protection
at the Source
enclosures
Figure 1. Barriers for unwanted energy flow from an energy source to a person.
(Adopted from the CSA Z796-98 Standard)
Figure 2. Illustration of energy-barrier approach to describe control measures.
(Adopted from the CSA Z796-98 Standard)
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