What Are The Current Silica Exposure Standards & Guidelines? | ||
NEW OSHA REGULATION The Occupational Safety and Health
Administration (OSHA) has issued a final rule to curb lung
cancer, silicosis, chronic obstructive pulmonary disease and
kidney disease in America's workers by limiting their exposure to
respirable crystalline silica. The rule is comprised of two
standards, one for Construction (29CFR1926.1153) and one for
General Industry and Maritime (29CFR 1910.1053) OSHA estimates that the rule will save over
600 lives and prevent more than 900 new cases of silicosis each
year, once its effects are fully realized. The Final Rule is
projected to provide net benefits of about $7.7 billion,
annually. About 2.3 million workers are exposed to
respirable crystalline silica in their workplaces, including 2
million construction workers who drill, cut, crush, or grind
silica-containing materials such as concrete and stone, and
300,000 workers in general industry operations such as brick
manufacturing, foundries, and hydraulic fracturing, also known as
fracking. Responsible employers have been protecting workers from
harmful exposure to respirable crystalline silica for years,
using widely-available equipment that controls dust with water or
a vacuum system. OHSA REGULATION KEY PROVISIONS Reduces the permissible exposure limit (PEL)
for respirable crystalline silica to 50 micrograms per cubic
meter of air (50 μg/m3), averaged over an 8‐hour
shift. Implements an Action level of airborne
respirable crystalline silica of 25 micrograms per cubic meter of
air (25 μg/m3), averaged over an 8‐hour shift. Requires employers to control silica dust
through engineering controls (water to keep the dust from getting
in the air and using ventilation to remove what little dust
remain). Requires employers to provide respiratory
protection when the PEL is going to be over 50 ug/m3,
and to keep employees from areas where the exposure might be
higher than the PEL. Requires employers to provide medical exams
to monitor highly exposed workers and gives them information about their lung health. CRYSTALLINE SILICA SAMPLE TYPES
· Air Sampling
OSHA REGULATED
· Bulk Materials
· Settled Dust
· Surface Wipes/
Microvac Cassettes
· Water |
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