Non-beryllium work area

Workplaces where there is no beryllium to result in an exposure; beryllium articles may be present in such areas.

Nonoperational period

A period defined, based on the nature of the work, as the period commencing at either of the following:

* For ongoing, routine operations (i.e., production-type activities)--The end of the work shift or shifts, if work extends over one more consecutive shifts.

* For specific jobs (i.e., non-production or isolated activities)--The conclusion of the work, even if the work extends over 2 or more days. For long-term operations, the first definition applies.

OSHA

Occupational Safety and Health Administration.

PAPR

Powered, air-purifying respirator.

PEL

See "Permissible exposure limit."

Permissible exposure limit

For beryllium, the PEL is 2 µg Be/m3 averaged over 8 hours.

Personal sample