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(b) Based on the results in supporting document 5, suggest why the two conclusions drawn by the fabrication manager (FM) are incorrect.

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3 (a) Explain how the health of workers could be adversely affected by carrying out welding on the aluminium window frames.

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Task 3: Hazardous substances and RPE

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(e) Consider the difficulties likely to be encountered when putting in place hearing protection zones and use of hearing protection equipment in this factory.

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Explain what HPZ and HPE provisions are required in the (i) assembly department (ii) extrusion department (iii) fabrication department.

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(d) The noise consultant makes recommendations about putting in place hearing protection zones (HPZ) and hearing protection equipment (HPE) for workers.

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Explain why this difference could be significant to the health of Worker X.

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(c) The MD has determined the exposure of Worker X as 89 dB(A) LEP,d but the exposure given above in (b) (i) is between 92 and 93 dB(A) LEP,d.

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(ii) Explain why the actual daily personal noise exposure of Worker X may be different from that stated in (b) (i).

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(i) Demonstrate how the exposure for Worker X is between 92 and 93 dB(A) LEP,d.

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(b) A week later the MD receives the full written report of the survey from the noise consultant. Extracts from this full report are provided in supporting document 4.

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Explain why this approach to calculating daily personal noise exposure for Worker X is inappropriate.

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They calculated it as follows (94 + 88 + 85) / 3 = 89

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2 (a) The MD has taken an average of noise levels from the noise map and determined that, during their shift, Worker X has a daily personal noise exposure of 89 dB(A) LEP,d.

Nov 18 2025 269.00
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