Belgie free dating sex and flirt site - Criteria for updating the crystalline silica pel

The most common type of silicosis in the United States today is chronic silicosis, which is caused by consistent low-level exposure to silica dust for more than 10 years.

Silicosis is fatal — according to a 2015 NIOSH study, it kills about 100 people every year.

OSHA's proposed rule would set a permissible exposure limit (PEL) of 50 micrograms of respirable crystalline silica per cubic meter of air.

The current levels have not been updated since they were adopted in 1971.

March 24, 2016 — OSHA Releases Final Silica Ruling OSHA released its long-anticipated rule reducing the permissible exposure level (PEL) for crystalline silica for general industry and construction.

The rule cuts the respirable silica PEL from 100 µg/m.

The current PEL for general industry is approximately 100 micrograms per cubic meter of air.

For construction and shipyards, it is about 250 micrograms.

The new permissible exposure limit for respirable crystalline silica – 50 micrograms per cubic meter of air averaged during an 8-hour shift – matches what NIOSH recommended in 1974.

OSHA’s new PEL is half the previous limit for general industry and 5 times lower than the previous limit for construction.

The existing silica standard uses equations to determine the exposure limits.

Those equations would be scrapped in the new standard in favor of a single PEL.

The agency estimates that the rule will save more than 600 lives and prevent more than 900 cases of silicosis – an incurable lung disease – each year.

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