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(d) Explain what practical control measures KH could consider to reduce their workers’ exposure to wood dust.


(v) The OH made some recommendations in their report (see supporting document 4). One of these recommendations was to carry out a detailed survey of workers’ exposure to wood dust.


(iv) Suggest reasons why the OH is recommending a detailed survey of workers’ exposure to wood dust.


(iii) Based on the SM’s discussion with Worker X, assumptions were made about Worker X’s exposure to wood dust.


Based on the information in the report, what was good about the approach taken by the OH?


(ii) Now that the SM has the OH’s report (supporting document 4), they can draw further conclusions.


Calculate the 8-hour time-weighted average (TWA) exposure to wood dust for Worker X.


What approach must an employer consider when deciding how to control exposure to wood dust?


(ii) Now that the SM has the OH’s report (supporting document 4), they can draw further conclusions. Based on the information in the report, what was good about the approach taken by the OH?


(b) Supporting document 2 suggests what an employer must consider when controlling exposure to hazardous substances such as wood dust. What approach must an employer consider when deciding how to control exposure to wood dust?


(iii) Explain the likely distribution of the wood dust in the respiratory tract of the workers exposed to the wood dust.


(ii) Explain the significance of the ‘typical exposure level’ reported in the study.


(i) Explain the meaning of ‘occupational exposure limits for wood dust that are assigned in law’.


1. (a) Supporting document 2 is the Woodworking Monthly trade magazine article that the SM was reading.


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