Question: Design Case Study. A particularly noisy process is operated by a single operator working at a control console. The 8-hour TWA exposure level for this

Design Case Study. A particularly noisy process

Design Case Study. A particularly noisy process is operated by a single operator working at a control console. The 8-hour TWA exposure level for this operator is 96 dBA. The company has initiated an engineering project to alleviate the problem and has two plans: Plan A Move the operator's control console from its current position 5 feet from the source of the noise to a point 10 feet away. Plan B. Enclose the noise source in an enclosure that would be effective in reducing the absolute sound pressure by 75%. Evaluate the effectiveness of each of these plans in reducing the noise-exposure level. Suppose that both plans were executed; calculate the combined effect of both plans on the noise- exposure level

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