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Vol. 24, Art. 19 (pp. 260-269)    |    2023       

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Evaluation of personnel exposure doses during radionuclide flaw detection at a nuclear ship repair enterprise

Baltrukova T.B., Aref'eva D.V., Shayakhmetova A.A., Dzhikiya Yu.V., Petushok A.V.

Research institute of industrial and maritime medicine of Federal medical biological agency

Brief summary

The purpose of the study was to assess the exposure doses of personnel during radionuclide flaw detection during the repair of nuclear submarines and to develop measures aimed at reducing them. The studies were carried out at the leading nuclear ship repair enterprise located in the Northwest Federal District of Russia. The method of retrospective analysis was used to assess the exposure doses of flaw detectorists and dosimetrists for the period 2017-2020. Individual effective doses to the whole body and equivalent doses to the lens of the eyes and hands of flaw detectorists were measured. It has been established that the main harmful and (or) dangerous production factor during radionuclide flaw detection is external gamma radiation. The average annual values of the individual effective dose of flaw detectorists during the observation period amounted to (6.60 ? 1.62) mSv / year, which is approximately six times higher than the radiation doses of dosimetrists (1.18 ? 0.60) mSv / year, who monitor safe conduct dosimetric works, and other personnel of group A of the enterprise (1.06 ? 0.05) mSv/year. An analysis of statistical reporting forms No. 1-DOZ, work permits for carrying out radiation-hazardous work, as well as the effective and equivalent doses of radiation of the lens of the eyes and hands of flaw detectors measured during flaw detection showed an uneven distribution of the dose load on personnel both during the shift and throughout the year. Based on the results obtained, measures were developed aimed at reducing the dose load of personnel during radionuclide flaw detection on repaired nuclear maritime facilities.


Key words

flaw detectorists; working conditions; radiation doses; ionizing radiation

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