Neutron dosimetry at workplaces of JC “Institute of Nuclear Materials”
If the neutron fields at personnel workplaces differ from the neutron fields in which individual dosimeters are verified, there is a possibility of additional errors in the assessment of such dosimetric quantities as ambient dose equivalent, individual dose equivalent or effective dose. To take into...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev
2021-06-01
|
| Series: | Радиационная гигиена |
| Subjects: | |
| Online Access: | https://www.radhyg.ru/jour/article/view/804 |
| _version_ | 1797873812308492288 |
|---|---|
| author | M. D. Pyshkina A. V. Vasilyev A. A. Ekidin E. I. Nazarov M. A. Romanova V. I. Gurinovich D. I. Komar V. A. Kozhemyakin |
| author_facet | M. D. Pyshkina A. V. Vasilyev A. A. Ekidin E. I. Nazarov M. A. Romanova V. I. Gurinovich D. I. Komar V. A. Kozhemyakin |
| author_sort | M. D. Pyshkina |
| collection | DOAJ |
| description | If the neutron fields at personnel workplaces differ from the neutron fields in which individual dosimeters are verified, there is a possibility of additional errors in the assessment of such dosimetric quantities as ambient dose equivalent, individual dose equivalent or effective dose. To take into account the energy distribution of the neutron radiation flux density and the geometry of the irradiation of workers, it is necessary to study the characteristics of the fields of neutron radiation at the workplaces of the personnel. In order to obtain conditionally true levels of personnel exposure to neutron radiation at nuclear facilities, studies of the energy and angular distribution of the neutron radiation flux density were carried out at the workplaces of the Institute of Reactor Materials JSC, Zarechny. The energy distribution of the neutron radiation flux density was obtained using an MKS-AT1117M multi-sphere dosimeter-radiometer with a BDKN-06 detection unit and a set of polyethylene spheres-moderators. The angular distribution of the neutron radiation flux density was estimated from the results of measurements of the accumulated dose of neutron radiation by individual thermoluminescent dosimeters placed on four vertical planes of a heterogeneous human phantom. The results of measurements of the energy and angular distribution of the neutron radiation flux density made it possible to estimate the conditionally true values of the ambient and individual dose equivalents. The calculated conventionally true values differ from the measured values from 0.7 to 8.9 times for the ambient dose equivalent and from 6 to 50 times for the individual dose equivalent. In order to reduce the error in assessing the effective dose of personnel using personal dosimeters, correction factors were determined. For different workplaces and types of personal dosimeters, correction factors are in the range of values from 0.02 to 0.16. |
| first_indexed | 2024-04-10T01:21:00Z |
| format | Article |
| id | doaj.art-bf11362292e341ee9694b39d34f89e24 |
| institution | Directory Open Access Journal |
| issn | 1998-426X |
| language | English |
| last_indexed | 2024-04-10T01:21:00Z |
| publishDate | 2021-06-01 |
| publisher | Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev |
| record_format | Article |
| series | Радиационная гигиена |
| spelling | doaj.art-bf11362292e341ee9694b39d34f89e242023-03-13T09:47:11ZengSaint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. RamzaevРадиационная гигиена1998-426X2021-06-01142899910.21514/1998-426X-2021-14-2-89-99706Neutron dosimetry at workplaces of JC “Institute of Nuclear Materials”M. D. Pyshkina0A. V. Vasilyev1A. A. Ekidin2E. I. Nazarov3M. A. Romanova4V. I. Gurinovich5D. I. Komar6V. A. Kozhemyakin7Уральский федеральный университет; Институт промышленной экологии Уральского отделения Российской академии наукИнститут промышленной экологии Уральского отделения Российской академии наукИнститут промышленной экологии Уральского отделения Российской академии наукИнститут промышленной экологии Уральского отделения Российской академии наукУральский федеральный университет; Институт реакторных материаловНаучно-производственное унитарное предприятие «АТОМТЕХ»Научно-производственное унитарное предприятие «АТОМТЕХ»Научно-производственное унитарное предприятие «АТОМТЕХ»If the neutron fields at personnel workplaces differ from the neutron fields in which individual dosimeters are verified, there is a possibility of additional errors in the assessment of such dosimetric quantities as ambient dose equivalent, individual dose equivalent or effective dose. To take into account the energy distribution of the neutron radiation flux density and the geometry of the irradiation of workers, it is necessary to study the characteristics of the fields of neutron radiation at the workplaces of the personnel. In order to obtain conditionally true levels of personnel exposure to neutron radiation at nuclear facilities, studies of the energy and angular distribution of the neutron radiation flux density were carried out at the workplaces of the Institute of Reactor Materials JSC, Zarechny. The energy distribution of the neutron radiation flux density was obtained using an MKS-AT1117M multi-sphere dosimeter-radiometer with a BDKN-06 detection unit and a set of polyethylene spheres-moderators. The angular distribution of the neutron radiation flux density was estimated from the results of measurements of the accumulated dose of neutron radiation by individual thermoluminescent dosimeters placed on four vertical planes of a heterogeneous human phantom. The results of measurements of the energy and angular distribution of the neutron radiation flux density made it possible to estimate the conditionally true values of the ambient and individual dose equivalents. The calculated conventionally true values differ from the measured values from 0.7 to 8.9 times for the ambient dose equivalent and from 6 to 50 times for the individual dose equivalent. In order to reduce the error in assessing the effective dose of personnel using personal dosimeters, correction factors were determined. For different workplaces and types of personal dosimeters, correction factors are in the range of values from 0.02 to 0.16.https://www.radhyg.ru/jour/article/view/804нейтроныдозиметр-радиометрпоправочный коэффициентгеометрия облучения |
| spellingShingle | M. D. Pyshkina A. V. Vasilyev A. A. Ekidin E. I. Nazarov M. A. Romanova V. I. Gurinovich D. I. Komar V. A. Kozhemyakin Neutron dosimetry at workplaces of JC “Institute of Nuclear Materials” Радиационная гигиена нейтроны дозиметр-радиометр поправочный коэффициент геометрия облучения |
| title | Neutron dosimetry at workplaces of JC “Institute of Nuclear Materials” |
| title_full | Neutron dosimetry at workplaces of JC “Institute of Nuclear Materials” |
| title_fullStr | Neutron dosimetry at workplaces of JC “Institute of Nuclear Materials” |
| title_full_unstemmed | Neutron dosimetry at workplaces of JC “Institute of Nuclear Materials” |
| title_short | Neutron dosimetry at workplaces of JC “Institute of Nuclear Materials” |
| title_sort | neutron dosimetry at workplaces of jc institute of nuclear materials |
| topic | нейтроны дозиметр-радиометр поправочный коэффициент геометрия облучения |
| url | https://www.radhyg.ru/jour/article/view/804 |
| work_keys_str_mv | AT mdpyshkina neutrondosimetryatworkplacesofjcinstituteofnuclearmaterials AT avvasilyev neutrondosimetryatworkplacesofjcinstituteofnuclearmaterials AT aaekidin neutrondosimetryatworkplacesofjcinstituteofnuclearmaterials AT einazarov neutrondosimetryatworkplacesofjcinstituteofnuclearmaterials AT maromanova neutrondosimetryatworkplacesofjcinstituteofnuclearmaterials AT vigurinovich neutrondosimetryatworkplacesofjcinstituteofnuclearmaterials AT dikomar neutrondosimetryatworkplacesofjcinstituteofnuclearmaterials AT vakozhemyakin neutrondosimetryatworkplacesofjcinstituteofnuclearmaterials |