A construction worker is exposed to noise levels of 95 dBA for 6 hours during a shift. According to OSHA's noise exposure limits, is additional hearing protection required beyond standard PPE?
Correct Answer
A) Yes, hearing protection is required
OSHA requires hearing protection when noise exposure exceeds 85 dBA as an 8-hour time-weighted average. At 95 dBA for 6 hours, this exceeds the permissible exposure limit and requires hearing protection.
Why This Is the Correct Answer
OSHA requires hearing protection when noise exposure exceeds 85 dBA as an 8-hour time-weighted average. At 95 dBA for 6 hours, the exposure significantly exceeds OSHA's permissible exposure limit of 90 dBA for 8 hours. The higher decibel level (95 dBA) combined with extended duration (6 hours) creates a hazardous exposure condition that mandates additional hearing protection beyond standard PPE to prevent occupational hearing loss.
Why the Other Options Are Wrong
Option B: Only if exposure exceeds 8 hours
This is incorrect because 95 dBA for 6 hours exceeds OSHA's permissible exposure limits. OSHA's action level is 85 dBA, and the permissible exposure limit is 90 dBA for 8 hours. At 95 dBA, the maximum allowable exposure time is much shorter than 6 hours, making this exposure unacceptable without hearing protection.
Option C: Only if other workers complain
This is wrong because OSHA noise exposure limits are based on decibel levels and duration, not just time alone. At 95 dBA, hearing protection is required regardless of whether exposure is 6 or 8 hours. The high decibel level makes even shorter exposures hazardous and requiring protection.
Memory Technique
Remember '85-90 Rule': 85 dBA triggers action (monitoring), 90 dBA is the 8-hour limit. Anything above 90 dBA needs protection, and 95 dBA is definitely in the danger zone.
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