CSLB C-33 Painting & DecoratingSafetyMedium
A painting crew is working on a historical building, removing old paint that is confirmed to contain lead. To prevent the spread of lead dust and protect workers outside the immediate work area, which containment method is generally required for exterior lead-based paint removal activities?
- AFull containment with critical barriers and negative air pressure
- BWarning signs posted around the work area
- CEncapsulation of the work area with poly sheeting and proper signage
- DPlastic sheeting draped over adjacent surfaces
Show answer & explanationAnswer & explanation
Correct answer: C. Encapsulation of the work area with poly sheeting and proper signage
For exterior lead-based paint removal, OSHA and EPA regulations typically require containment of the work area to prevent lead dust from migrating. Encapsulation with poly sheeting forms a physical barrier, while proper signage warns others of the hazard.
Why the other options are wrong
- A. Negative air pressure is primarily used for interior containment to prevent dust migration to clean areas; it's generally not feasible or required for open exterior work.
- B. Warning signs are necessary but insufficient as a primary containment method for lead dust.
- D. Draping plastic sheeting might offer some protection but doesn't create a sealed enclosure to contain dust effectively.
Exterior Lead Paint Containment
Methods used to prevent the release and spread of lead dust during exterior lead-based paint removal activities.
- Aims to protect workers, public, and environment.
- Often involves creating physical barriers.
- Must comply with OSHA and EPA lead-safe work practices.
Memory trick: Lead dust must be trapped, not just warned about.