A filter that traps and retains at least 99.97% of 0.3 m m monodispersed particles.

Immune response

The series of cellular events by which the immune system reacts to challenge by an antigen.

Medical Director

The physician responsible for the overall direction and operation of the site occupational medicine program. This position is referred to as the Site Occupational Medical Director in 10 CFR 850.

Medical removal protection benefits

The employment rights established by 10 CFR 850.35 for beryllium-associated workers who voluntarily accept temporary or permanent medical removal from beryllium areas following a recommendation by the Medical Director.

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.