What term describes the maximum OSHA exposure for workers during a 15-minute excursion exposure?

What term describes the maximum OSHA exposure for workers during a 15-minute excursion exposure?

• A. PEL
• B. STEL
• C. TLV
• D. TWA

Answer: (B)

Short-Term Exposure Limit is the maximum concentration a worker can be exposed to during a short period, typically 15 minutes, to prevent acute health effects from brief high exposures. It is the limit that should not be exceeded during any 15-minute window. By contrast, a Permissible Exposure Limit (OSHA) refers to long-term exposure over an 8-hour workday (and often a 40-hour week); a Threshold Limit Value is a recommended (not OSHA-set) limit; and a Time-Weighted Average describes the average exposure over a standard period (often 8 hours).

Short-Term Exposure Limit is the maximum concentration a worker can be exposed to during a short period, typically 15 minutes, to prevent acute health effects from brief high exposures. It is the limit that should not be exceeded during any 15-minute window.

By contrast, a Permissible Exposure Limit (OSHA) refers to long-term exposure over an 8-hour workday (and often a 40-hour week); a Threshold Limit Value is a recommended (not OSHA-set) limit; and a Time-Weighted Average describes the average exposure over a standard period (often 8 hours).