JOURNAL DESCRIPTION
The Medical Radiology and Radiation Safety journal ISSN 1024-6177 was founded in January 1956 (before December 30, 1993 it was entitled Medical Radiology, ISSN 0025-8334). In 2018, the journal received Online ISSN: 2618-9615 and was registered as an electronic online publication in Roskomnadzor on March 29, 2018. It publishes original research articles which cover questions of radiobiology, radiation medicine, radiation safety, radiation therapy, nuclear medicine and scientific reviews. In general the journal has more than 30 headings and it is of interest for specialists working in thefields of medicine¸ radiation biology, epidemiology, medical physics and technology. Since July 01, 2008 the journal has been published by State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency. The founder from 1956 to the present time is the Ministry of Health of the Russian Federation, and from 2008 to the present time is the Federal Medical Biological Agency.
Members of the editorial board are scientists specializing in the field of radiation biology and medicine, radiation protection, radiation epidemiology, radiation oncology, radiation diagnostics and therapy, nuclear medicine and medical physics. The editorial board consists of academicians (members of the Russian Academy of Science (RAS)), the full member of Academy of Medical Sciences of the Republic of Armenia, corresponding members of the RAS, Doctors of Medicine, professor, candidates and doctors of biological, physical mathematics and engineering sciences. The editorial board is constantly replenished by experts who work in the CIS and foreign countries.
Six issues of the journal are published per year, the volume is 13.5 conventional printed sheets, 88 printer’s sheets, 1.000 copies. The journal has an identical full-text electronic version, which, simultaneously with the printed version and color drawings, is posted on the sites of the Scientific Electronic Library (SEL) and the journal's website. The journal is distributed through the Rospechat Agency under the contract № 7407 of June 16, 2006, through individual buyers and commercial structures. The publication of articles is free.
The journal is included in the List of Russian Reviewed Scientific Journals of the Higher Attestation Commission. Since 2008 the journal has been available on the Internet and indexed in the RISC database which is placed on Web of Science. Since February 2nd, 2018, the journal "Medical Radiology and Radiation Safety" has been indexed in the SCOPUS abstract and citation database.
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The main working language of the journal is Russian, an additional language is English, which is used to write titles of articles, information about authors, annotations, key words, a list of literature.
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The two-year impact factor of RISC, according to data for 2017, was 0.439, taking into account citation from all sources - 0.570, and the five-year impact factor of RISC - 0.352.
Medical Radiology and Radiation Safety. 2019. Vol. 64. No. 3. P. 32–39
DOI: 10.12737/article_5cf22ff1aea865.52579823
A.B. Mayzik1, I.P. Korenkov2, A.G. Tsovyanov2, T.N. Laschenova2,3, V.N. Klochkov2
Comprehensive Organizational and Methodical Approaches to Decommissioning of Radwaste Repositories
1. SC “A.A. Bochvar High-tech Research Institute of Inorganic Materials”, Moscow, Russia. E-mail:
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;
2. A.I. Burnasyan Federal Medical Biophysical Center, Moscow, Russia;
3. RUDN University, Moscow, Russia
A.B. Mayzik – Deputy Chief Engineer, Chief of Service, Post-Graduate Student;
I.P. Korenkov – Chief Researcher, PhD Tech., Dr. Sci. Biol., Prof.;
A.G. Tsovyanov – Head of Lab.;
T.N. Laschenova – Leading Researcher, PhD Chem., Dr. Sci. Biol., Prof.;
V.N. Klochkov – Chief Researcher, Dr. Sci. Tech., Associate Prof.
Abstract
Purpose: Development of comprehensive organizational and methodical approaches to decommissioning of shallow radwaste (RW) repositories.
Material and methods: The following researches were conducted during assessment of radiation and hygiene situation:
– assessing the state of physical barriers of repositories (tanks) of solid and liquid RW;
– assessing radiation situation at the repository site before and after remediation;
– measuring specific activity of 90Sr and 137Cs in ground and subsurface water, core sample, soils, building structures.
Methods: on foot gamma survey; gamma-ray spectrometric measurement of radionuclides in environmental samples using a stationary spectrometer; radiochemical extraction of radionuclides and their radiometry.
Results: The surveys were performed in 2014–2016. They delivered data on gamma dose rate at the RW repository site, specific activity of 90Sr and 137Cs in ground and subsurface water, core sample, soils, building structures.
The surveys showed that content of 90Sr in subsurface water varied from 0.25 to 0.4 Bq/kg, while content of 137Cs was below the detection threshold (0.01 Bq per sample). It was founded that distribution of 90Sr and 137Cs in soil (core sample) forming the top layer of the area is highly uneven. In some cases specific activity of soil exceeded 1000 Bq/kg (С-23 well at the depth of 2.75 m and С-24 well at the depth of 5 m). In all other cases specific activity of the core sample did not exceed 10 Bq/kg, and specific activity of soil was up to 50 Bq/kg which is over background values. The ambient dose equivalent rate at the site varied from 0.1 to 0.3 µSv/h.
More than 6700 measurements were performed (more than 2400 measurements of the ambient dose equivalent rate, more than 4100 measurements of beta-contamination of work surfaces and equipment, and more than 200 measurements of specific and volumetric activity of environmental samples).
After remediation activities content of radionuclides in soil and subsurface water was at the levels of background values.
Conclusions: This work allowed to substantiate technical solutions, procedure of RW accounting and control, using of shelters and mobile systems for radiation safety of the personnel and environmental protection.
It was demonstrated that average external radiation doses for the workers involved in decommissioning activities did not exceed 0.7 mSv (variation from 0.16 to 1.7 mSv), while internal radiation doses varied from 0.35 to 3.3 µSv.
Density of beta-contamination of the site did not exceed 38 beta-particles/(cm2∙min) which corresponds to background values. The ambient dose equivalent rate of the site was within 0.09–0.15 µSv/h after the work has been done.
Key words: liquid and solid radioactive waste, repositories, specific and volumetric activity, decontamination, remediation
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For citation: Mayzik AB, Korenkov IP, Tsovyanov AG, Laschenova TN, Klochkov VN. Comprehensive Organizational and Methodical Approaches to Decommissioning of Radwaste Repositories. Medical Radiology and Radiation Safety. 2019;64(3):32-9. (Russian).
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