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__NOTOC__An exposure situation resulting from a source that already exists, with no intention to use the source for its radioactive properties, before a decision to control the resulting exposure is taken. Decisions on the need to control the exposure may be necessary but not urgent.(Adapted from [[ICRP Publication 138]])

(Adapted from [http://http://www.icrp.org/publication.asp?id=ICRP%20Publication%20138 ICRP ''Publication 138ICRP Glossary entry - 7 March 2019''])

 '''Return to [[ICRP Glossary|Glossary]] entry - 7 March 2019'''