Calculation of the effective external dose rate to a person staying in the resettlement zone of the Vetka district of the Gomel region of Belarus based on in situ and ex situ assessments in 2016–2018

Рамзаев, В. П.; Bernhardsson, Christian; Dvornik, A.; Barkovsky, A. N.; Водоватов, А. В.; Jönsson, Mikael; Гапоненко, С. О.

doi:10.1016/j.jenvrad.2020.106168

Cited by 14 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It may also be argued that the lower level of 1 mSv yr −1 might be the one actually employed in a future fallout scenario, and it is currently used as a reference level by authorities in Belarus for communications with the public regarding resettlement and economic revitalisation of Chernobyl-contaminated zones (e.g. Ramzaev et al 2020). A number of different settings have been defined to illustrate the impact of the following key parameters: initial activity ratio of 134 Cs and 137 Cs (FR), longterm component in ecological half-time for external dose (c 6 in r(t), given in table 1), longterm half-time of external dose (c 7 in r(t)), and the magnitude of the time-integrated aggregate radioecological transfer factor, T ag,max .…”

Section: Description Of the Scenariosmentioning

confidence: 99%

Averting cumulative lifetime attributable risk (LAR) of cancer by decontamination of residential areas affected by a large-scale nuclear power plant fallout: time aspects of radiological benefits for newborns and adults

et al. 2020

View full text Add to dashboard Cite

The averted cumulative lifetime attributable risk (LAR), the residual dose and highest ground deposition of 137Cs complying with a reference dose level of 20 mSv yr−1 to an individual returning after one year to an area contaminated by unfiltered releases of fission products from a nuclear power plant (NPP) were evaluated by applying an existing exposure model designed to compute age- and gender-dependent time-integrated LAR. The model was applied to four types of nuclear fallout scenarios, partly based on data from the Chernobyl and Fukushima releases and from theoretical source terms from Swedish NPPs. For rapid decontamination measures that achieve a 50% relative reduction in external dose rate within 1 year, compliance with the reference level 20 mSv yr−1 can be attained for an initial 137Cs ground deposition of up to 2 MBq m−2 with relaxed food restrictions. This compliance can be attained at even higher ground deposition (up to 4.5 MBq m−2) if using the strict food restrictions employed in Japan after 2011. Considering longer than 1 year return times it was also found that the benefit of implementing decontamination decreases rapidly with time (2–3 years half-time), especially if the fallout has a high initial 134Cs to 137Cs activity ratio and if the ecological half-time of the external dose rate is short (<5 years). Depending on fallout scenario the averted cumulative LAR for newborn girls by decontamination that is achieved after 5 years is only between 6% and 11% of that obtained by evacuation alone during the same time, indicating a rather limited radiological benefit of decontamination if delayed more than a few years. We conclude that decision makers and emergency response planners need to consider that protracted decontamination measures may have limited radiological benefit compared with evacuation in terms of averted future cancer cases, albeit it may have other societal benefits.

show abstract

Section: Description Of the Scenariosmentioning

confidence: 99%

Averting cumulative lifetime attributable risk (LAR) of cancer by decontamination of residential areas affected by a large-scale nuclear power plant fallout: time aspects of radiological benefits for newborns and adults

et al. 2020

View full text Add to dashboard Cite

show abstract

“…In 1986, the 137 Cs contamination density of the Bartolomeevka territory exceeded 555 kBq/m 2 [3]. After the Chernobyl accident, this area had been cultivated for some time, which led to mechanical mixing of the upper 0-20 cm soil layer and to a relatively uniform distribution of 137 Cs in this layer [1]. These conditions were decisive in the selection of cultivated soil for comparisons.…”

Section: краткие сообщенияmentioning

confidence: 99%

“…Отбор проб был осуществлен на одном из заброшенных огородов (52,649° с.ш., 31,326° в.д.). После Чернобыльской аварии этот участок на протяжении некоторого времени подвергался культивации, что привело к механическому перемешиванию верхнего 0-20 см слоя почвы и, соответственно, к весьма равномерному распределению 137 Cs в данном слое [1]. Это обстоятельство было определяющим в выборе именно культивированной почвы для проведения сличений.…”

Section: краткие сообщенияunclassified

“…In 2016-2018, the group carried out assessments of the radiation environment in the Chernobyl contaminated Vetka district in the Gomel region of Belarus [1]. An important part of that project was to evaluate the inventory and depth distribution of 137 Cs in soil, and to determine the corresponding gamma dose rate in air at various locations.…”

Section: Introductionmentioning

confidence: 99%

“…В 2016-2018 гг. данная группа провела оценку радиационной обстановки в Ветковском районе Гомельской области Беларуси [1]. Важной частью этого проекта было изучение запаса и распределения по глубине 137 Cs в почве, а также определение мощности дозы гамма-излучения в воздухе в различных локациях.…”

Section: Introductionunclassified

See 2 more Smart Citations

Results of international comparison tests on determination of <sup>137</sup>Cs activity concentration in soil samples

Рамзаев

Бернхардссон

Dvornik

et al. 2020

Radiac. gig. (2008)

View full text Add to dashboard Cite

In 2016-2019, comparison tests of different methods for quantitative determination of the content of the technogenic radionuclide 137 Cs in soil samples were performed. Soil samples were collected from areas with high and low 137 Cs contamination in Belarus. The intercomparison was performed as a part of an ongoing Russian-Swedish-Belarusian cooperation on the assessment of radioactive contamination of the environment. Three laboratories of the regular participants in the project and three laboratories from other facilities participated in the intercomparison that was focused on the samples of cultivated soil from the Gomel region (the first stage of comparisons, 3 samples) and the Grodno region (the second stage of comparisons, 4 samples). Results on activity concentrations in the samples presented by the participants were in satisfactory agreement with each other. The maximum deviation from the average value, that had been calculated for each sample based on the individual results from all laboratories, was 14%. Stage-averaged deviations from the inter-laboratory mean did not exceed 10%. Results of the comparison tests should be taken into consideration when comparing or merging experimental data from different laboratories participating in the Russian-Swedish-Belarusian cooperation project.

show abstract

90Sr, 134Cs and 137Cs in Sea Area Surrounding a Nuclear Power Plant (NPP)

Ma,

Liu,

et al. 2024

Environmental Science and Engineering

View full text Add to dashboard Cite

Calculation of the effective external dose rate to a person staying in the resettlement zone of the Vetka district of the Gomel region of Belarus based on in situ and ex situ assessments in 2016–2018

Cited by 14 publications

References 17 publications

Averting cumulative lifetime attributable risk (LAR) of cancer by decontamination of residential areas affected by a large-scale nuclear power plant fallout: time aspects of radiological benefits for newborns and adults

Averting cumulative lifetime attributable risk (LAR) of cancer by decontamination of residential areas affected by a large-scale nuclear power plant fallout: time aspects of radiological benefits for newborns and adults

Results of international comparison tests on determination of <sup>137</sup>Cs activity concentration in soil samples

90Sr, 134Cs and 137Cs in Sea Area Surrounding a Nuclear Power Plant (NPP)

Contact Info

Product

Resources

About