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4 days ago · Of particular note is the new limit for benzene. The threshold limit value is now 0.02 parts per million (ppm), a substantial reduction from the previous value of 0.5 ppm. Additionally, the 15-minute short-term exposure limit (STEL) has been eliminated altogether. How is the Revised TLV Going to Protect Workers?
Apr 22, 2024 · The rule imposes stringent new requirements on operators, including a reduced Permissible Exposure Limit of 50 µg/m³, mandatory sampling, regular written evaluations of operations (even when there are no changes to the process, equipment, or mined mineral), the adoption of respiratory protection programs, and medical surveillance programs for Me...
2 days ago · The U.S. Occupational Safety and Health Administration (OSHA) has set a permissible exposure limit of 1 part of benzene per million parts of air (1 ppm) in the workplace during an 8-hour workday, 40-hour workweek. The short term exposure limit for airborne benzene is 5 ppm for 15 minutes.
- 80.1 °C (176.2 °F; 353.2 K)
- 5.53 °C (41.95 °F; 278.68 K)
- C₆H₆
- 78.114 g·mol−1
Apr 23, 2024 · Permissible Exposure Limit (PEL) and Action Level (AL) MSHA maintained the Permissible Exposure Limit (“PEL”) and Action Level (“AL”) that it released in the proposed rule. This was...
Apr 8, 2024 · OSHA’s permissible exposure limits (PELs) are legally enforceable exposure limits that are based primarily on the ACGIH’s 1968 TLVs. Given that these values are out of date, OSHA’s Hazard Communication standard requires all safety data sheets (SDS) list the latest TLV alongside the PEL value.
Apr 25, 2024 · What are the occupational exposure limits? Back to top. In general, the occupational exposure limit (OEL) indicates the level of admissible exposure, for a length of time (usually 8 hours), to a chemical or physical hazard that is not likely to affect the health of a worker.
Apr 18, 2024 · A new final rule published today in the Federal Register by MSHA sets a uniform permissible exposure limit and action level for respirable crystalline silica for all mines. The new PEL is 50 µg/m3 for a full-shift exposure, calculated as an 8-hour time-weighted average, and the action level is 25 µg/m3, also for a full-shift exposure.
