A construction crew is working outdoors in Fresno when the temperature reaches 97°F. Under Cal/OSHA heat illness prevention requirements, what is the minimum frequency for providing preventive cool-down rest periods?
Correct Answer
C) Every hour
When temperatures reach 95°F or higher, Cal/OSHA Section 3395 requires preventive cool-down rest periods to be provided at least every hour.
Why This Is the Correct Answer
Cal/OSHA Section 3395 mandates that when ambient temperatures reach 95°F or higher, employers must provide preventive cool-down rest periods at least every hour. At 97°F in Fresno, this temperature threshold is exceeded, triggering the hourly rest period requirement. This regulation is designed to prevent heat-related illnesses by ensuring workers have regular opportunities to cool down and recover from heat exposure during extreme temperature conditions.
Why the Other Options Are Wrong
Option A: At employee discretion
Employee discretion is insufficient for heat illness prevention at 97°F. Cal/OSHA requires mandatory, employer-initiated rest periods when temperatures exceed 95°F. Relying solely on employee discretion could result in workers pushing themselves beyond safe limits, potentially leading to heat exhaustion or heat stroke.
Option B: Every 30 minutes
Every 30 minutes exceeds the minimum Cal/OSHA requirement. While more frequent breaks may be beneficial, the regulation specifically mandates rest periods at least every hour when temperatures reach 95°F or higher. This option represents over-compliance rather than the minimum required frequency.
Option D: Every 2 hours
Every 2 hours is insufficient and violates Cal/OSHA requirements. When temperatures reach 95°F or higher, waiting 2 hours between mandatory rest periods creates dangerous exposure periods that significantly increase the risk of heat-related illness. The regulation specifically requires more frequent hourly intervals for worker safety.
Memory Technique
Remember '95-1': When it hits 95°F, rest every 1 hour. The numbers rhyme and create a simple rule for Cal/OSHA heat illness prevention.
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A construction site has employees working at heights of 12 feet above the ground on a steep-slope roof. According to Cal/OSHA fall protection requirements, what must be provided?
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