Appendix A: Glossary - Continued - STD-1128-98master0297

DOE-STD-1128-98

Guide of Good Practices for Occupational Radiological Protection in Plutonium Facilities

detector: A device or component that produces a measurable response to ionizing radiation. (Portable

Instrument Calibration IG)

DOELAP: The Department of Energy Laboratory Accreditation Program for personnel dosimetry.

(RCS)

dose: The amount of energy deposited in body tissue due to radiation exposure. (RCS)

exposure: The general condition of being subjected to ionizing radiation, such as by exposure to ionizing

radiation from external sources or to ionizing radiation sources inside the body. In this document,

exposure does not refer to the radiological physics concept of charge liberated per unit mass of air.

(Internal Dosimetry IG)

fissionable materials: A nuclide capable of sustaining a neutron - induced fission chain reaction (e.g.,

uranium-233, uranium-235, plutonium-238, plutonium 239, plutonium -241, neptunium-237, americium-

241 and curium-244) (10 CFR 830).

fixed contamination: Any area with detectable removable contamination less than the removable

contamination values of Appendix D of 10 CFR 835 and fixed contamination at levels that exceed the

total contamination values of Appendix D of 10 CFR 835. (Posting and Labeling IG)

fixed-location sampler: An air sampler located at a fixed location in the workplace.

grab sampling: A single sample removed from the workplace air over a short time interval, typically

less than one hour.

hazardous waste: Because of its quantity, concentration, and physical, chemical, or infectious

characteristics, hazardous waste may cause or significantly contribute to an increase in mortality, or an

increase in serious irreversible or incapacitating reversible illness; it may pose a potential hazard to

human health or the environment when improperly treated, stored, transported, disposed of, or otherwise

managed. (DOE/S-0101)

high contamination area: Any area where removable contamination levels are greater than 100 times

the removable values specified in appendix D of 10 CFR 835. (10 CFR 835)

high-efficiency particulate air (HEPA) filter: Throwaway extended pleated medium dry-type filter

with 1) a rigid casing enclosing the full depth of the pleats, 2) a minimum particle removal efficiency of

99.97% for thermally generated monodisperse di-octyl phlalate smoke particles with a diameter of

0.3 :m, and 3) a maximum pressure drop of 1.0 in. w.g. when clean and operated at its rated airflow

capacity. (RCS)

high radiation area: Any area, accessible to individuals, in which radiation levels could result in an

individual receiving a deep dose equivalent in excess of 0.1 rem (0.001 sievert) in 1 hour at 30 cm from

the radiation source or from any surface that the radiation penetrates. (10 CFR 835)

HLW: High-level waste (HLW) is the material that remains following the reprocessing of spent nuclear

fuel and irradiated targets from reactors. The HLW is highly radioactive and generates heat on its own.

Some of its elements will remain radioactive for thousands of years. Because of this, HLW must be

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