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DOE-STD-1098-99
Radiological Control
Glossary
June 2004
thermoluminescent dosimeter (TLD): Radiation monitoring device used to record the exposure of personnel or areas
to certain types of radiation.
transuranic waste: Without regard to source or form, waste that is contaminated with alpha-emitting transuranic
radionuclides having half-lives greater than 20 years and concentrations greater than 100 nCi/g at the time of assay.
unusual occurrence: Non-emergency occurrence that has significant impact or potential for impact on safety,
environment, health, security, or operations. Examples of the types of occurrences that are to be categorized as unusual
occurrences are contained in DOE Order 232.1, Occurrence Reporting and Processing of Operations Information.
very high radiation area: Any area, accessible to individuals, in which radiation levels could result in an individual
receiving an absorbed dose in excess of 500 rads (5 grays) in one hour at 1 meter from a radiation source or from any
surface that the radiation penetrates [see 835.2(a)].
week: A period of seven consecutive days [see 835.2(a)].
whole body dose: The sum of the effective dose equivalent for external exposures and the committed effective dose
equivalent for internal exposures. Also referred to as total effective dose equivalent.
year: The period of time beginning on or near January 1 and ending on or near December 31 of that same year used to
determine compliance with the provisions of 10 CFR 835. The starting date of the year used to determine compliance
may be changed provided that the change is made at the beginning of the year and that no day is omitted or duplicated in
consecutive years [see 835.2(a)].
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