Assessment of conservatism of assumptions on the population exposure conditions applied for establishing the permissible atmospheric release levels
The annual permissible atmospheric release levels of radionuclides are established with the condition that the population annual dose should not exceed the dose quota. Two conservative assumptions on the population exposure are applied in handbooks for calculation of the permissible release levels:...
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Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev
2021-04-01
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| Series: | Радиационная гигиена |
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| Online Access: | https://www.radhyg.ru/jour/article/view/770 |
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| author | A. I. Kryshev A. A. Buryakova M. E. Vasyanovich A. A. Ekidin |
| author_facet | A. I. Kryshev A. A. Buryakova M. E. Vasyanovich A. A. Ekidin |
| author_sort | A. I. Kryshev |
| collection | DOAJ |
| description | The annual permissible atmospheric release levels of radionuclides are established with the condition that the population annual dose should not exceed the dose quota. Two conservative assumptions on the population exposure are applied in handbooks for calculation of the permissible release levels: a person can reside in any point outside the sanitary protection zone of nuclear facility; all exposure pathways, including food consumption, are determined by the place of residence. Calculation of the annual dose for adults living near the Smolensk, Rostov and Bilibino NPP was performed for three scenarios to evaluate the degree of conservatism of these assumptions. Scenario 1 assumed permanent residence in a critical point of the area with production of all food in this point and consumption only local food by the population. Scenario 2 assumed that a certain part of food is imported. In scenario 3 dose assessment was made for a permanent resident of the closest settlement near NPP, taking into consideration realistic characteristics of the exposure conditions. Atmospheric release levels of radionuclides assessed during the radiation and technical surveys of the NPP’s emission sources in 2017 – 2019 were used as the initial data. It is shown that the assumptions on the conditions of population exposure significantly affect the conservatism of the annual dose assessment. The calculated annual dose for the most conservative scenario is higher than for realistic scenario by 6,3 times (for the Smolensk NPP), 8,4 times (Rostov NPP), 883 times (Bilibino NPP). The highest degree of conservatism was shown for the internal radiation dose estimates. The results of calculation of the annual dose from NPP’s emissions strongly depend on the method for dose assessment from releases of 3H and 14C. Use of the regional values of consumption of locally produced food allows reasonable reducing the conservatism of the annual dose estimates from the NPP’s permanent radionuclide releases. |
| format | Article |
| id | doaj-art-a3d0a2bc099e40e3ba8c2d7c0d5fe560 |
| institution | DOAJ |
| issn | 1998-426X |
| language | English |
| publishDate | 2021-04-01 |
| publisher | Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev |
| record_format | Article |
| series | Радиационная гигиена |
| spelling | doaj-art-a3d0a2bc099e40e3ba8c2d7c0d5fe5602025-08-20T03:01:49ZengSaint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. RamzaevРадиационная гигиена1998-426X2021-04-01141606710.21514/1998-426X-2021-14-1-60-67688Assessment of conservatism of assumptions on the population exposure conditions applied for establishing the permissible atmospheric release levelsA. I. Kryshev0A. A. Buryakova1M. E. Vasyanovich2A. A. Ekidin3Research and Production Association «Typhoon», RoshydrometResearch and Production Association «Typhoon», RoshydrometInstitute of Industrial Ecology, Ural Branch of Russian Academy of SciencesInstitute of Industrial Ecology, Ural Branch of Russian Academy of SciencesThe annual permissible atmospheric release levels of radionuclides are established with the condition that the population annual dose should not exceed the dose quota. Two conservative assumptions on the population exposure are applied in handbooks for calculation of the permissible release levels: a person can reside in any point outside the sanitary protection zone of nuclear facility; all exposure pathways, including food consumption, are determined by the place of residence. Calculation of the annual dose for adults living near the Smolensk, Rostov and Bilibino NPP was performed for three scenarios to evaluate the degree of conservatism of these assumptions. Scenario 1 assumed permanent residence in a critical point of the area with production of all food in this point and consumption only local food by the population. Scenario 2 assumed that a certain part of food is imported. In scenario 3 dose assessment was made for a permanent resident of the closest settlement near NPP, taking into consideration realistic characteristics of the exposure conditions. Atmospheric release levels of radionuclides assessed during the radiation and technical surveys of the NPP’s emission sources in 2017 – 2019 were used as the initial data. It is shown that the assumptions on the conditions of population exposure significantly affect the conservatism of the annual dose assessment. The calculated annual dose for the most conservative scenario is higher than for realistic scenario by 6,3 times (for the Smolensk NPP), 8,4 times (Rostov NPP), 883 times (Bilibino NPP). The highest degree of conservatism was shown for the internal radiation dose estimates. The results of calculation of the annual dose from NPP’s emissions strongly depend on the method for dose assessment from releases of 3H and 14C. Use of the regional values of consumption of locally produced food allows reasonable reducing the conservatism of the annual dose estimates from the NPP’s permanent radionuclide releases.https://www.radhyg.ru/jour/article/view/770dosereleasepopulationfoodtritiumcarbon-14nuclear power plant |
| spellingShingle | A. I. Kryshev A. A. Buryakova M. E. Vasyanovich A. A. Ekidin Assessment of conservatism of assumptions on the population exposure conditions applied for establishing the permissible atmospheric release levels Радиационная гигиена dose release population food tritium carbon-14 nuclear power plant |
| title | Assessment of conservatism of assumptions on the population exposure conditions applied for establishing the permissible atmospheric release levels |
| title_full | Assessment of conservatism of assumptions on the population exposure conditions applied for establishing the permissible atmospheric release levels |
| title_fullStr | Assessment of conservatism of assumptions on the population exposure conditions applied for establishing the permissible atmospheric release levels |
| title_full_unstemmed | Assessment of conservatism of assumptions on the population exposure conditions applied for establishing the permissible atmospheric release levels |
| title_short | Assessment of conservatism of assumptions on the population exposure conditions applied for establishing the permissible atmospheric release levels |
| title_sort | assessment of conservatism of assumptions on the population exposure conditions applied for establishing the permissible atmospheric release levels |
| topic | dose release population food tritium carbon-14 nuclear power plant |
| url | https://www.radhyg.ru/jour/article/view/770 |
| work_keys_str_mv | AT aikryshev assessmentofconservatismofassumptionsonthepopulationexposureconditionsappliedforestablishingthepermissibleatmosphericreleaselevels AT aaburyakova assessmentofconservatismofassumptionsonthepopulationexposureconditionsappliedforestablishingthepermissibleatmosphericreleaselevels AT mevasyanovich assessmentofconservatismofassumptionsonthepopulationexposureconditionsappliedforestablishingthepermissibleatmosphericreleaselevels AT aaekidin assessmentofconservatismofassumptionsonthepopulationexposureconditionsappliedforestablishingthepermissibleatmosphericreleaselevels |