Question

osha requires employers to have hearing conservation plans if 8-hour time-weighted average noise exposures are:

1000 decibels or more
105 decibels or more
90 decibels or more
85 decibels or more

Explanation:

Identify the regulatory context

The question asks for the threshold at which OSHA requires employers to implement a Hearing Conservation Program based on an 8-hour time-weighted average (TWA) noise exposure. This falls under OSHA Standards for occupational health.

Recall the specific noise standard

Under OSHA Standards (specifically 29 CFR 1910.95), employers must administer a continuing, effective hearing conservation program whenever employee noise exposures equal or exceed an 8-hour time-weighted average sound level of 85 decibels (dB) measured on the A scale (dBA).

Compare with the given options

Let's evaluate the options provided in the question:

• 1000 decibels or more: Extremely high, physically impossible for human survival.
• 105 decibels or more: Higher than the action level.
• 90 decibels or more: This is the Permissible Exposure Limit (PEL) for an 8-hour TWA, but the conservation plan action level is lower.
• 85 decibels or more: This is the official OSHA Action Level requiring a Hearing Conservation Plan.

Formulate the final conclusion

The correct threshold for implementing a Hearing Conservation Plan is 85 decibels or more. This is a key component of Occupational Safety to prevent work-related hearing loss.

Answer:

• (A) 1000 decibels or more
• (B) 105 decibels or more
• (C) 90 decibels or more
• (D) 85 decibels or more (Correct answer)