Controlling Biological Hazards
To effectively reduce the risks of biological hazards in construction environments, employers must implement a combination of engineering controls, work practice controls, and personal protective equipment (PPE). These strategies work together to prevent exposure to mold, bloodborne pathogens, animal droppings, and other harmful biological agents.
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Engineering Controls
- Improve ventilation in enclosed or damp areas to reduce mold growth and airborne spore concentration.
- Use physical barriers or containment (e.g., plastic sheeting) during mold remediation or cleanup to prevent the spread of contaminants.
- Install insect screening or sealing gaps to keep rodents, birds, and insects out of work areas.
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Work Practice Controls
- Use wet cleaning methods or HEPA-filtered vacuums instead of dry sweeping in contaminated areas.
- Follow strict protocols for handling and disposing of sharps, bodily fluids, and contaminated materials.
- Implement decontamination procedures, including proper handwashing and disinfecting of tools and surfaces.
- Train workers to recognize biological hazards and respond appropriately during cleanup or exposure incidents.
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Personal Protective Equipment (PPE)
- Wear disposable gloves, eye protection, and face shields when handling bodily fluids or contaminated surfaces.
- Use N95 respirators or higher when working in areas with mold or airborne biological agents.
- Wear protective coveralls or disposable suits in heavily contaminated environments to prevent skin and clothing exposure.
- Use insect repellent and protective clothing when working in outdoor or wooded areas with ticks and insects.
Knowledge Check Choose the best answer for the question.
9-9. Which engineering control should be used when cleaning a basement with visible mold on walls?
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