![]() ![]() ![]() If your levels are above the limit, look to reduce exposures through engineering, or administrative controls. If your employee exposure levels are below the OEL, then respirators aren’t legally required, though you may still want to offer respirators for voluntary use. ![]() Measurements may also be in the form of 15-minute short-term exposure limits (STEL) or a ceiling limit (C), which is the absolute limit that should never be exceeded at any time by a worker. For instance, both could be expressed in ppm for an eight-hour time-weighted average (TWA). In any event, make sure both your measured concentrations and the levels to which you are comparing them (such as the OEL) use the same units of measure. You can often use values set by other groups, such as the American Conference of Governmental Industrial Hygienists (ACGIH) – if those values are lower than the OEL. The results are typically measured in parts per million (ppm) or milligrams per cubic meter of air (mg/m3), commonly averaged over an eight-hour work shift.Ĭompare your exposure levels to the occupational exposure limit (OEL) or permissible exposure limit (PEL) set by the Occupational Safety and Health Administration (OSHA) to determine if action is required by law. The exposure assessment should yield employee exposure levels for the substances you tested for. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |