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Assessment of occupational internal exposure to beta emitters from the nuclear reactor primary coolant circuit

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Pliszczyński T., Ciszewska K., Dymecka M., Ośko J., Haratym Z.
Polish Journal of Medical Physics And Engineering
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2012
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vol. 18
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issue 2
41-47
EN
Fission products of 235U or isotopes from activation may appear in technological waters at normal operation of a research reactor. Therefore, reactor cooling water may contain a number of beta radioactive isotopes including yttrium and strontium isotopes, which can pose potential hazard to reactor personnel. In order to asses internal exposure urinalysis is carried out. This work presents the method of sample preparation and measurement used by Radiation Protection Measurements Laboratory (RPLM) of the National Centre for Nuclear Research (NCNR). Method of various isotopes of yttrium and Sr-90 activity calculation is also shown. Determination of these isotopes activities in urine sample allows estimating the effective doses
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Improvement of the quality of effective dose estimation by interlaboratory comparisons

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Katarzyna C., Malgorzata D., Tomasz P., Jakub O.
Polish Journal of Medical Physics And Engineering
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2010
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vol. 16
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issue 1
35-42
EN
Radiation Protection Measurements Laboratory (RPLM) of the Institute of Atomic Energy POLATOM determines radionuclides in human urine to estimate the effective dose. Being an accredited laboratory, RPLM participated in interlaboratory comparisons in order to assure the quality of services concerning monitoring of internal contamination. The purpose of the study was to examine the effect of interlaboratory comparisons on the accuracy of the provided measurements. The results regarding tritium (3H) and strontium (90Sr) determination, obtained within the radiotoxicological intercomparison exercises, organized by PROCORAD, in 2005-2010, were analyzed and the methods used by the laboratory were verified and improved.
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