Reducing Manganese Risk
Workplace standards exist to protect people from toxic and
harmful substances that can result in irreversible health
damage. Manganese has been linked to cancer hazards, reproductive
hazards, parkinsonism, Parkinsons
disease, and Wilsons disease. Understanding your
workplace health risks is important in being able to recognize
signs of manganese poisoning, or any other health condition
that can occur as a result of manganese
Exposure to substances, such as manganese, should be routinely
evaluated by collecting samples. OSHA workplace manganese
exposure limit is 5mg/m3 and cannot legally be exceeded at
any time. The ACGIH recommended airborne exposure limit is
5 mg/m3 as manganese for dust and compounds with a recommended
airborne exposure limit at 1 mg/m3 as manganese for fume averaged
over an 8-hour workshift and 3 mg/m3 as manganese for fume
as a short term exposure limit.
In a workplace
area containing manganese, enclose any operation that
is possible and use a local exhaust ventilation at the manganese
release site. Respirators should be used in the event that
a local exhaust ventilation is not used as the manganese site.
Workers should protect their skin with work clothing that
will not expose them to direct contact with manganese. The
protective work clothing should not be transported home and
risk bringing the manganese into homes. Immediately wash at
the end of the workday.
If a manganese spill occurs the workers should know how to
properly handle this emergency situation or immediately contact
someone knowledgeable on how to deal with the risk. All persons
not wearing protective equipment in the area of the manganese
spill or leak should be removed from the area until the clean
up has been completed and it is safe to enter the premises.
Anyone that comes in direct contact with the manganese should
immediately takes steps to take away the direct risk.
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