Wood dust and carcinogens By Alan Kavanaugh, CRM, CCPI (Member NFPA)
O
ver the past several years there has been an increase in inspection activity and updates of dust collection systems in regards to industrial arts (IA) technology wood shops located in many high schools and middle schools. It should be noted that the primary focus of the Dust Mitigation program for these types of occupancies deals with the prevention of explosions and subsequent fires. In this article, we will discuss the potential health concerns, and in particular, potential cancer concerns in regards to wood dust and exposure to wood dusts in school shops.
exposed to wood dust in England devel-
Exposure to wood dust has long been associated with a variety of adverse health effects, including dermatitis, allergic respiratory effects, mucosal, and non-allergenic respiratory effects and cancer.
tional cancers refers to workers involved
It should also be noted that the International Agency for Research on Cancer (IRAC) has classified wood dust as a carcinogenic to humans. A study completed in 1965 observed that a large number of furniture workers and other wood workers
oped a rare form of nasal cancer (Adenocarcinoma). In this study, the highest risks appear to be to those workers exposed to hardwood dust including beach and oak, as well as various other tropical species. There have also been attributed allergic reactions in regards to people working with cedar. It was also noted in this study that the cancer developed on-average over a 20-year period and that most of the exposure levels were much higher than those seen in today’s industry. Worksafe BC in their section on occupawith furniture and cabinet-making as being exposed to a form of nasal cancer from wood dust. Safety Data Sheets (SDS) sourced on pine sawdust and the Tampa International Forest Products sheet on hazard warning for untreated wood dust and wood products also discuss potential carcinogenic exposures from wood dust, in particular nasal cancer. There are other studies taking place at this time. Worksafe BC and OH&S organizations are designed to provide recommendations, guidelines, and regulations to ensure a safe work environment is provided for all employees in the workplace. Worksafe BC and other organizations have provided documented exposure limits for many types of biological and chemical substances, including wood dust.
Controlling exposure All safety programs should have policies and procedures, as well as references to documentation like Worksafe BC and OSHA regulations. They should include an ongoing risk analysis system, which is continuing to accumulate information at all times, noting potential risky and hazardous operations so plans can be developed to mitigate potential for injury and subsequent losses. Finer dusts appear to have more of an exposure to workers that other wood-type flying’s.
Basic Safety – Reducing exposures to wood dust 1. Standard ventilation (dust-control systems) should be provided. 2. Dust-control systems should be cleaned, inspected, and maintained on a regular basis. 3. Filter masks should be worn. 4. Eye and face protection should always be provided. 5. Type of wood (species) should be investigated before use to ensure it is safe to use in a school environment.
Conclusion So in closing, remember the following steps: 1. Conduct a Risk Analysis or Needs Assessment: This is the Who, What, Where, Why, and When section.
Exposure to wood dust has long been associated with a variety of adverse health effects, including dermatitis, allergic respiratory effects, mucosal, and non-allergenic respiratory effects and cancer.
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Ops Talk • Fall 2017
