An activity, taken for or by DOE at a DOE facility, that can expose workers to airborne beryllium--including, but not limited to, design, construction, operation, maintenance, or decommissioning--and that may involve one DOE facility or operation or a combination of facilities and operations. This term is synonymous with "beryllium activity," used in 10 CFR 850.

Beryllium work area

Any area in which beryllium use may result in personnel exposure; areas with beryllium articles only (as defined by OSHA in 29 CFR 1910.1200) are not included this definition.

Beryllium worker

A current worker who is regularly employed in a DOE beryllium activity. At LLNL, this term indicates any worker assigned to a beryllium work area or a regulated beryllium work area.

Breathing zone

A hemisphere forward of the shoulders, centered on the mouth and nose, with a radius of 6 to 9 inches.

CBD

See "Chronic beryllium disease."

CBDPP

Chronic Beryllium Disease Prevention Program.

Chronic beryllium disease

A disease of the lungs caused by the body's immune system and characterized by progressive scarring of the lungs.

Confirmed positive

Positive result based on analysis of two separate blood samples (Be-LPT or an equivalent test).