C33 Safety 5 — Questions and Answers
Question 1: Before painting over existing coatings in a pre-1978 residential building, what testing is required under California's RRP rule (EPA Title X)?
- A lead paint test using an EPA-recognized test kit or XRF analysis before disturbing the surface (Correct answer)
- An asbestos test only
- No testing if the surface appears in good condition
- Testing only if the building was built before 1940
Correct answer: A lead paint test using an EPA-recognized test kit or XRF analysis before disturbing the surface
EPA's Renovation, Repair, and Painting (RRP) rule requires lead testing or an assumption of lead presence before disturbing painted surfaces in pre-1978 housing.
Question 2: What is the primary reason painting contractors must store solvent-soaked rags in self-closing metal containers?
- To prevent spontaneous combustion caused by oxidation of linseed-oil-based products (Correct answer)
- To keep the rags moist for later reuse
- To comply with air quality regulations on VOC emissions
- To prevent theft of materials
Correct answer: To prevent spontaneous combustion caused by oxidation of linseed-oil-based products
Linseed oil and some other drying oils generate heat as they oxidize; solvent-soaked rags can self-ignite if piled or left in open containers.
Question 3: A California painting contractor must ensure that spray painting equipment is electrically grounded primarily to prevent which hazard?
- Static electricity spark ignition of flammable paint or solvent vapors (Correct answer)
- Electric shock from high-voltage power lines
- Motor burnout from excess current
- Corrosion of the spray tip
Correct answer: Static electricity spark ignition of flammable paint or solvent vapors
Grounding spraying equipment prevents the buildup of static electricity that could create a spark and ignite flammable coating vapors.
Question 4: Under Cal/OSHA's respiratory protection standard, what must an employer do before requiring an employee to wear a tight-fitting respirator?
- Conduct a medical evaluation and fit test for each affected employee (Correct answer)
- Issue the respirator and train the employee only
- Have the employee sign a waiver of medical examination
- Obtain a physician's note if the employee requests one
Correct answer: Conduct a medical evaluation and fit test for each affected employee
Cal/OSHA Title 8 Section 5144 requires medical evaluation and fit testing before any employee is required to wear a tight-fitting respirator.
Question 5: Which of the following is a leading cause of painting contractor fatalities in California according to Cal/OSHA statistics?
- Falls from ladders and scaffolding (Correct answer)
- Chemical inhalation in enclosed spaces
- Eye injuries from paint splatter
- Cuts from scraping tools
Correct answer: Falls from ladders and scaffolding
Falls from elevation — particularly from ladders and scaffolding — are the leading cause of fatal injuries among painting contractors in California.
Question 6: When applying epoxy coatings that contain isocyanate hardeners, what is the minimum respiratory protection required for the painter?
- Supplied-air respirator (SAR) or a full-face respirator with organic vapor and P100 cartridges, as specified by the SDS (Correct answer)
- N95 disposable respirator
- Half-face respirator with organic vapor cartridges only
- No respirator if working outdoors
Correct answer: Supplied-air respirator (SAR) or a full-face respirator with organic vapor and P100 cartridges, as specified by the SDS
Isocyanate-containing coatings require the SDS-specified respirator, which is often a supplied-air respirator because isocyanates can cause occupational asthma even at low concentrations.
Question 7: A painter is assigned to work on a two-point adjustable suspension scaffold (swing stage). Which safety device must be worn and attached to an independent lifeline at all times?
- Full-body harness connected to a self-retracting lifeline or rope grab on an independent vertical lifeline (Correct answer)
- Tool belt with shock-absorbing lanyard clipped to the scaffold guardrail
- Chest harness attached to the suspension ropes
- Safety vest only — no fall arrest system is needed if the guardrails are intact
Correct answer: Full-body harness connected to a self-retracting lifeline or rope grab on an independent vertical lifeline
Workers on suspension scaffolds must wear a full-body harness attached to an independent lifeline — the scaffold suspension ropes cannot serve as the lifeline.
C33 Safety 5
Before painting over existing coatings in a pre-1978 residential building, what testing is required under California's RRP rule (EPA Title X)?