C33 California Painting Contractor Safety 2 — Questions and Answers
Question 1: Under Cal/OSHA regulations, at what height must a C-33 painting contractor provide fall protection for employees in general industry?
- 4 feet
- 6 feet
- 7.5 feet (Correct answer)
- 10 feet
Correct answer: 7.5 feet
Cal/OSHA Title 8, Section 1670 requires fall protection at heights of 7.5 feet or more for general industry, which applies to most painting operations.
Cal/OSHA requires fall protection at 7.5 feet for general industry operations under Title 8, Section 1670. This differs from federal OSHA's 6-foot threshold for construction. However, specific painting scenarios may trigger different requirements. C-33 contractors must evaluate each job to determine which standard applies. Fall protection methods include guardrails, safety nets, personal fall arrest systems, and warning line systems.
Question 2: A C-33 contractor is spray-painting in an enclosed space. What is the primary ventilation requirement under Cal/OSHA?
- Open all windows and doors
- Provide mechanical ventilation to keep airborne concentrations below the PEL (Correct answer)
- Use a fan blowing outward
- Ventilation is only required if workers complain of odors
Correct answer: Provide mechanical ventilation to keep airborne concentrations below the PEL
Cal/OSHA requires mechanical ventilation sufficient to maintain airborne concentrations of hazardous substances below their Permissible Exposure Limits (PELs).
Cal/OSHA Title 8, Section 5143 requires employers to implement engineering controls, including mechanical ventilation, to maintain airborne concentrations of hazardous substances below Permissible Exposure Limits (PELs). For spray painting, this means explosion-proof exhaust ventilation that creates sufficient air movement to prevent buildup of flammable vapors and keep worker exposure within safe limits.
Question 3: What type of respirator must a C-33 contractor provide when employees are spray-applying coatings containing isocyanates?
- Dust mask (N95)
- Half-face organic vapor respirator
- Supplied-air respirator (SAR) or SCBA (Correct answer)
- Full-face P100 respirator
Correct answer: Supplied-air respirator (SAR) or SCBA
Isocyanates are highly toxic sensitizers that require supplied-air respirators (SAR) or self-contained breathing apparatus (SCBA) during spray application.
Isocyanates, found in polyurethane and two-part coating systems, are potent respiratory sensitizers that can cause occupational asthma. Cal/OSHA and NIOSH recommend supplied-air respirators (SAR) or self-contained breathing apparatus (SCBA) during spray application of isocyanate-containing products because organic vapor cartridge respirators do not provide adequate protection.
Question 4: A painting crew is working on a scaffold 25 feet high. Under Cal/OSHA, who must inspect the scaffold before each work shift?
- Any crew member
- A competent person designated by the employer (Correct answer)
- A Cal/OSHA inspector
- The property owner
Correct answer: A competent person designated by the employer
Cal/OSHA requires that scaffolds be inspected by a competent person before each work shift and after any event that could affect structural integrity.
Under Cal/OSHA Title 8, Section 1637, scaffolds must be inspected before each work shift by a competent person, defined as someone capable of identifying hazards and authorized by the employer to take corrective action. The inspection must verify structural integrity, proper planking, guardrails, access, and base support.
Question 5: Under Cal/OSHA, what determines the maximum wind speed for exterior painting from an elevated work platform?
- A universal 15 mph limit
- A universal 20 mph limit
- A universal 25 mph limit
- The specific equipment manufacturer's operating specifications (Correct answer)
Correct answer: The specific equipment manufacturer's operating specifications
Cal/OSHA requires employers to follow manufacturer specifications for maximum wind speed limits on aerial lifts and elevated work platforms.
Cal/OSHA does not specify a single universal wind speed limit for all elevated work. Instead, employers must follow the manufacturer's operating specifications for the specific aerial lift, scaffold, or elevated work platform being used. Most aerial lift manufacturers specify maximum operating wind speeds between 25-35 mph, but this varies by model and configuration.
Question 6: A C-33 contractor stores flammable paints at the job site. Under Cal/OSHA, flammable liquid storage cabinets must be labeled with which warning?
- Caution: Paint Storage
- Flammable - Keep Fire Away (Correct answer)
- Danger: Hazardous Materials
- No Smoking Within 50 Feet
Correct answer: Flammable - Keep Fire Away
Cal/OSHA Section 5533 requires flammable liquid storage cabinets to be conspicuously labeled 'Flammable - Keep Fire Away.'
Cal/OSHA Title 8, Section 5533 specifies that approved flammable liquid storage cabinets must be conspicuously labeled with the words 'Flammable - Keep Fire Away.' These cabinets must be constructed of double-walled 18-gauge steel with a self-closing door. No more than 60 gallons of Class I or Class II liquids, or 120 gallons of Class III liquids, may be stored in a single cabinet.
C33 California Painting Contractor Safety 2
Under Cal/OSHA regulations, at what height must a C-33 painting contractor provide fall protection for employees in general industry?