CSLB C-33 Painting & DecoratingSafetyMedium
When working with lead-based paint, which of the following is considered the most effective engineering control to minimize worker exposure to lead dust and fumes?
- AWearing N100 respirators.
- BUsing wet sanding techniques.
- CProviding comprehensive lead safety training.
- DImplementing a strict handwashing policy.
Show answer & explanationAnswer & explanation
Correct answer: B. Using wet sanding techniques.
Engineering controls are designed to eliminate or reduce the hazard at the source. Wet sanding significantly reduces airborne lead dust compared to dry sanding, making it a highly effective engineering control by preventing the dust from becoming airborne in the first place. Respirators and handwashing are personal protective equipment and administrative controls, respectively, while training is an administrative control.
Why the other options are wrong
- A. N100 respirators are PPE and do not eliminate the hazard at the source.
- C. Training is an administrative control and does not reduce the hazard at the source.
- D. Handwashing is an administrative control and hygiene practice, not an engineering control.
Engineering Controls (Lead Safety)
Methods that modify the work environment or process to reduce or eliminate lead hazards at the source, rather than relying on worker behavior or PPE.
- Examples include wet methods, local exhaust ventilation, and HEPA vacuums.
- Considered the most effective hierarchy of controls.
- Prioritized over administrative controls and PPE.
Memory trick: Eliminate, Substitute, Engineer, Administer, Protect – E.S.E.A.P.