PubMed · 2228622
Source inventory limits.
Abstract
A new set of values has been developed for exempting sealed sources of radioactive materials from inventory. The criteria for exemption are: (a) the annual occupational dose from external radiation at 1 m from the source is approximately 100 microSv (10 mrem) or less; and (b) the source activity is approximately equal to the annual limit on intake by inhalation or less than 4 X 10(7) Bq (1000 microCi). These criteria were selected to correspond to an annual occupational dose of approximately 50 to 500 microSv (5 to 50 mrem) and a small potential annual risk of approximately 1 X 10(-6) to 1 X 10(-5) fatal cancers or less.
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G D Kerr, K F Eckerman. 1990. Source inventory limits.. https://doi.org/10.1097/00004032-199012000-00018
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