Radiation survey around “the 30th shipyard” company: 30 years after the accident
- Authors: Titov A.V.1, Shandala N.K.1, Isaev D.V.1, Novikova N.Y.1, Seregin V.A.1, Semenova M.P.1, Filonova A.A.1, Doroneva T.A.1, Starinskaya R.A.1, Starinskiy V.G.1, Shlygin V.V.1, Akhromeev S.V.1
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Affiliations:
- State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
- Issue: Vol 99, No 7 (2020)
- Pages: 674-681
- Section: ENVIRONMENTAL HYGIENE
- Published: 08.09.2020
- URL: https://rjsocmed.com/0016-9900/article/view/639697
- DOI: https://doi.org/10.47470/0016-9900-2020-99-7-674-681
- ID: 639697
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Full Text
Abstract
Introduction. The objective of this work was the radiation survey in the vicinity of “The 30th Shipyard” Company. The studies were carried out during the period between 2014 and 2016 within the supervision area and in the area of the radioactive trace formed after the accident of 1985 in the nuclear submarine.
Material and methods. The following methods were used in the course of the survey: pedestrian gamma surveys, gamma spectrometry measurements of radionuclides using a gamma spectrometer, and radiochemical extraction of 90Sr, followed by measurement of its activity at radiometric installations.
Results. Gamma ambient dose equivalent rate within the supervision area beyond the radioactive trace varies within the range between 0.09 and 0.18 µSv/h. The specific activities of 90Sr, 137Cs, and 235U in soil do not exceed 11, 34, and 5.8 Bq/kg, respectively. The specific activity of 60Co in the soil of the Dunay village is lower 0.42 Bq/kg and does not exceed 4.9 Bq/kg at the rest part of the supervision area. The area of the radioactive trace limited by 0.13 µSv/h iso-line does not exceed 0.5 km2, while that limited by 0.3 µSv/h iso-line - 0.0063 km2. Within the area of the trace, the highest value of the gamma dose rate accounts for 0.60 µSv/h. Soils contaminated with emergency radionuclides do not belong to solid radioactive waste. Emergency radionuclides migrated in soil up to 20 cm depth. Today, 137Cs is firmly fixed in the soil. 40-45% of 60Co activity is in acid-soluble form. Under specific conditions, it can migrate deep into the soil and be accessible to plants.
Conclusions. Within the supervision area of “The 30th Shipyard” Company, except for the area of the radioactive contamination trace induced by the accident, the radiation situation is the same as that in the area of the Primorskiy Krai. The soil of the radioactive trace does not belong to solid radioactive waste. In the future, the improvement of the radiation situation on the trace will be mainly due to the physical decay of radionuclides.
About the authors
Alexey V. Titov
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Author for correspondence.
Email: titov_fmbc@mail.ru
ORCID iD: 0000-0002-3797-2677
Ст. науч. сотр. ФГБУ «ГНЦ РФ – ФМБЦ им. А.И. Бурназяна». Russian Federation
Natalia K. Shandala
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
ORCID iD: 0000-0003-1290-3082
Russian Federation
Dmitry V. Isaev
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
ORCID iD: 0000-0002-9687-628X
Russian Federation
Natalya Y. Novikova
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
Russian Federation
Vladimir A. Seregin
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
ORCID iD: 0000-0001-9883-1571
Russian Federation
Mariya P. Semenova
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
ORCID iD: 0000-0003-0904-0415
Russian Federation
Anna A. Filonova
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
ORCID iD: 0000-0002-0832-2878
Russian Federation
Tatyana A. Doroneva
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
ORCID iD: 0000-0001-6826-1934
Russian Federation
Renata A. Starinskaya
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
ORCID iD: 0000-0003-1026-3472
Russian Federation
Vitaly G. Starinskiy
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
ORCID iD: 0000-0003-2587-5041
Russian Federation
Vladimir V. Shlygin
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
ORCID iD: 0000-0002-1190-9557
Russian Federation
Sergey V. Akhromeev
State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Email: noemail@neicon.ru
ORCID iD: 0000-0002-6564-3045
Russian Federation
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