Morbark BOXER 320, Руководство оператора

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Safety Precautions
1.8
Boxer Brush/Sweeper Attachment Silica Dust Caution
An OSHA ruling has established new permissible exposure limits (PEL) for occupa-
tional exposure to respriable crystalline silica. OSHA standard 29 CFR 1926.1153
covers the construction industry, and 29 CFR 1910.1053 covers the general and
maritime industries. The rules also requires employee protections such as perform-
ing exposure assessments, using exposure control methods, using respiratory pro-
tections, offering medical surveillance, developing hazard communication informa-
tion, and keeping silica-related records.
Under the new standard the employer shall not allow dry sweeping or dry brushing
where such activity could contribute to employee exposure to respirable crystalline
silica unless wet sweeping, HEPA-filtered vacuuming or other methods that minimize
the likelihood of exposure are not feasible. The employer bears the burden of show-
ing the alternative methods are not feasible.
-The use of non-grit, oil, or waxed based sweeping compounds are an acceptable
dust suppression housekeeping method.
-The use of compressed air for cleaning is allowed where the compressed air is
used in conjunction with a ventilation system that effectively captures the dust cloud
created by the compressed air, or where no alternative method is feasible.
-The employer’s exposure control plan must include the description of the house-
keeping measures.