Pub Date : 2021-01-01DOI: 10.14407/jrpr.2021.00038
M. Akiyoshi, Duy Khiem Do, I. Yamaguchi, T. Kakefu, Toshiharu Miyakawa
Background: Crookes tube is utilized in junior high and high schools in Japan to study the character of electrons and current, and not for radiological education. There is no official guideline or regulation for these radiation source to the public. Therefore, most teachers have no information about the leakage of X-rays from Crookes tube. The peak energy of X-rays is approximately 20 keV, and it is impossible to measure using conventional survey meters.Materials and Methods: Each leakage dose of low energy X-rays from 38 Crookes tube in the education field, such as junior and senior high schools in Japan, was explored by the teachers in the school using radio-photoluminescence (RPL) dosimeters. Before and after the measurements, the dosimeters were sent by postal mails.Results and Discussion: At the exploration in this study, it was estimated that the 70 μm dose equivalent, Hp(0.07) of X-rays from 31 Crookes tubes were smaller than 100 μSv in 10 minutes, at the distance of 1 m, where the Crookes tube was usually observed. However, the highest dose was estimated as 0.69 mSv by an equipment with the full power. Furthermore, one Crookes tube exhibited 0.62 mSv with minimum output power of the induction coil. This relatively large dose was reduced by the shorter distance of discharge electrodes of the induction coil.Conclusion: The leakage dose of low energy X-rays from 38 Crookes tube was explored using RPL dosimeters. It was estimated that the Hp(0.07) of X-rays from 31 Crookes tubes were smaller than 100 μSv in 10 minutes at the distance of 1 m, while some equipment radiated a higher dose. With this study, the provisional guideline for the safety operation of Crookes tube is established.
{"title":"Radiation Safety Exploration Using Radio-photoluminescence Dosimeter for Crookes Tubes in Junior and Senior High School in Japan","authors":"M. Akiyoshi, Duy Khiem Do, I. Yamaguchi, T. Kakefu, Toshiharu Miyakawa","doi":"10.14407/jrpr.2021.00038","DOIUrl":"https://doi.org/10.14407/jrpr.2021.00038","url":null,"abstract":"Background: Crookes tube is utilized in junior high and high schools in Japan to study the character of electrons and current, and not for radiological education. There is no official guideline or regulation for these radiation source to the public. Therefore, most teachers have no information about the leakage of X-rays from Crookes tube. The peak energy of X-rays is approximately 20 keV, and it is impossible to measure using conventional survey meters.Materials and Methods: Each leakage dose of low energy X-rays from 38 Crookes tube in the education field, such as junior and senior high schools in Japan, was explored by the teachers in the school using radio-photoluminescence (RPL) dosimeters. Before and after the measurements, the dosimeters were sent by postal mails.Results and Discussion: At the exploration in this study, it was estimated that the 70 μm dose equivalent, Hp(0.07) of X-rays from 31 Crookes tubes were smaller than 100 μSv in 10 minutes, at the distance of 1 m, where the Crookes tube was usually observed. However, the highest dose was estimated as 0.69 mSv by an equipment with the full power. Furthermore, one Crookes tube exhibited 0.62 mSv with minimum output power of the induction coil. This relatively large dose was reduced by the shorter distance of discharge electrodes of the induction coil.Conclusion: The leakage dose of low energy X-rays from 38 Crookes tube was explored using RPL dosimeters. It was estimated that the Hp(0.07) of X-rays from 31 Crookes tubes were smaller than 100 μSv in 10 minutes at the distance of 1 m, while some equipment radiated a higher dose. With this study, the provisional guideline for the safety operation of Crookes tube is established.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78478486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.14407/jrpr.2021.00262
Hyun Suk Kim, Jooyub Lee, S. Choi, Y. Bang, S. Ye, Geehyun Kim
Background: This work aims to develop a new imaging system based on a pulse shape discrimination-capable Cs2LiYCl6:Ce (CLYC) scintillation detector combined with the rotational modulation collimator (RMC) technique for dual-particle imaging.Materials and Methods: In this study, a CLYC-based RMC system was designed based on Monte Carlo simulations, and a prototype was fabricated. Therein, a rotation control system was developed to rotate the RMC unit precisely, and a graphical user interface-based software was also developed to operate the data acquisition with RMC rotation. The RMC system was developed to allow combining various types of collimator masks and detectors interchangeably, making the imaging system more versatile for various applications and conditions.Results and Discussion: Operational performance of the fabricated system was studied by checking the accuracy and precision of the collimator rotation and obtaining modulation patterns from a gamma-ray source repeatedly.Conclusion: The prototype RMC system showed reliability in its mechanical properties and reproducibility in the acquisition of modulation patterns, and it will be further investigated for its dual-particle imaging capability with various complex radioactive source conditions.
{"title":"Design and Fabrication of CLYC-Based Rotational Modulation Collimator (RMC) System for Gamma-Ray/Neutron Dual-Particle Imager","authors":"Hyun Suk Kim, Jooyub Lee, S. Choi, Y. Bang, S. Ye, Geehyun Kim","doi":"10.14407/jrpr.2021.00262","DOIUrl":"https://doi.org/10.14407/jrpr.2021.00262","url":null,"abstract":"Background: This work aims to develop a new imaging system based on a pulse shape discrimination-capable Cs2LiYCl6:Ce (CLYC) scintillation detector combined with the rotational modulation collimator (RMC) technique for dual-particle imaging.Materials and Methods: In this study, a CLYC-based RMC system was designed based on Monte Carlo simulations, and a prototype was fabricated. Therein, a rotation control system was developed to rotate the RMC unit precisely, and a graphical user interface-based software was also developed to operate the data acquisition with RMC rotation. The RMC system was developed to allow combining various types of collimator masks and detectors interchangeably, making the imaging system more versatile for various applications and conditions.Results and Discussion: Operational performance of the fabricated system was studied by checking the accuracy and precision of the collimator rotation and obtaining modulation patterns from a gamma-ray source repeatedly.Conclusion: The prototype RMC system showed reliability in its mechanical properties and reproducibility in the acquisition of modulation patterns, and it will be further investigated for its dual-particle imaging capability with various complex radioactive source conditions.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83451314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-30DOI: 10.14407/JRPR.2020.45.4.171
Seongmoon Jung, Bitbyeol Kim, Jung In Kim, Jong Min Park, C. Choi
1Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea; 2Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea; 3Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea; 4Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea; 5Robotics Research Laboratory for Extreme Environments, Advanced Institute of Convergence Technology, Suwon, Korea
{"title":"Deriving the Effective Atomic Number with a Dual-Energy Image Set Acquired by the Big Bore CT Simulator","authors":"Seongmoon Jung, Bitbyeol Kim, Jung In Kim, Jong Min Park, C. Choi","doi":"10.14407/JRPR.2020.45.4.171","DOIUrl":"https://doi.org/10.14407/JRPR.2020.45.4.171","url":null,"abstract":"1Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea; 2Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea; 3Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea; 4Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea; 5Robotics Research Laboratory for Extreme Environments, Advanced Institute of Convergence Technology, Suwon, Korea","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85256644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-30DOI: 10.14407/JRPR.2020.45.4.178
K. Park, Hae-Woong Kim, Heedong Sohn, Nam-Kyun Kim, Chung-Kyu Lee, Yun-Do Lee, Jihoon Lee, Young Hwan Hwang, Mi Hyun Lee, Dong Kyu Lee, Duk Woon Jung
Results and Discussion: Through neutron activation analysis, dose rate is evaluated for the casks containing cut-off pieces produced from decommissioned RV and RVI. For RV cut-off ones, the highest value of dose rate on the surface of cask is 6.97 × 10-1 mSv/hr and 2 m from it is 3.03 × 10-2 mSv/hr. For RVI cut-off ones, on the surface of it is 0.166 × 10-1 mSv/hr and 2 m from it is 1.04 × 10-1 mSv/hr. Dose rates for various RV and RVI cut-off pieces distributed lower than the limit except the one of 2 m from the cask surface of RVI. It needs to adjust contents in cask which carries highly radioactive components in order to decrease thickness of cask.
{"title":"Study on Dose Rate on the Surface of Cask Packed with Activated Cut-off Pieces from Decommissioned Nuclear Power Plant","authors":"K. Park, Hae-Woong Kim, Heedong Sohn, Nam-Kyun Kim, Chung-Kyu Lee, Yun-Do Lee, Jihoon Lee, Young Hwan Hwang, Mi Hyun Lee, Dong Kyu Lee, Duk Woon Jung","doi":"10.14407/JRPR.2020.45.4.178","DOIUrl":"https://doi.org/10.14407/JRPR.2020.45.4.178","url":null,"abstract":"Results and Discussion: Through neutron activation analysis, dose rate is evaluated for the casks containing cut-off pieces produced from decommissioned RV and RVI. For RV cut-off ones, the highest value of dose rate on the surface of cask is 6.97 × 10-1 mSv/hr and 2 m from it is 3.03 × 10-2 mSv/hr. For RVI cut-off ones, on the surface of it is 0.166 × 10-1 mSv/hr and 2 m from it is 1.04 × 10-1 mSv/hr. Dose rates for various RV and RVI cut-off pieces distributed lower than the limit except the one of 2 m from the cask surface of RVI. It needs to adjust contents in cask which carries highly radioactive components in order to decrease thickness of cask.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87397492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-30DOI: 10.14407/JRPR.2020.45.4.147
E. W. Katengeza
Materials and Methods: This paper challenges the scope of the policy on nuclear power by reviewing its implementation strategy and comparing it to: the strategy established for coal in the same policy; some experiences from other countries; and documents by the International Atomic Energy Agency (IAEA) relating to establishing a national position on nuclear power and infrastructural requirements for a nuclear power program.
{"title":"A Brief Scrutiny of Malawi’s Policy on Nuclear Power","authors":"E. W. Katengeza","doi":"10.14407/JRPR.2020.45.4.147","DOIUrl":"https://doi.org/10.14407/JRPR.2020.45.4.147","url":null,"abstract":"Materials and Methods: This paper challenges the scope of the policy on nuclear power by reviewing its implementation strategy and comparing it to: the strategy established for coal in the same policy; some experiences from other countries; and documents by the International Atomic Energy Agency (IAEA) relating to establishing a national position on nuclear power and infrastructural requirements for a nuclear power program.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78326309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-30DOI: 10.14407/jrpr.2020.45.3.117
Hyun Cheol Lee, B. Koo, Chang-Il Choi, C. Park, J. Kwon, H. Kim, Heejun Chung, C. Min
Background: Radiation portal monitors (RPMs) involving plastic scintillators installed at the border inspection sites can detect illicit trafficking of radioactive sources in cargo containers within seconds. However, RPMs may generate false alarms because of the naturally occurring radioactive materials. To manage these false alarms, we previously suggested an energy-weighted algorithm that emphasizes the Compton-edge area as an outstanding peak. This study intends to evaluate the identification of radioactive sources using an improved energy-weighted algorithm.
{"title":"Evaluation of Source Identification Method Based on Energy-Weighting Level with Portal Monitoring System Using Plastic Scintillator","authors":"Hyun Cheol Lee, B. Koo, Chang-Il Choi, C. Park, J. Kwon, H. Kim, Heejun Chung, C. Min","doi":"10.14407/jrpr.2020.45.3.117","DOIUrl":"https://doi.org/10.14407/jrpr.2020.45.3.117","url":null,"abstract":"Background: Radiation portal monitors (RPMs) involving plastic scintillators installed at the border inspection sites can detect illicit trafficking of radioactive sources in cargo containers within seconds. However, RPMs may generate false alarms because of the naturally occurring radioactive materials. To manage these false alarms, we previously suggested an energy-weighted algorithm that emphasizes the Compton-edge area as an outstanding peak. This study intends to evaluate the identification of radioactive sources using an improved energy-weighted algorithm.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76570215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-30DOI: 10.14407/jrpr.2019.44.4.156
So-Hyun Park, W. Choi, Jinhyun Choi
Background: To compare the dose of radiation received by the fetus in a pregnant patient irra-diated for head and neck cancer using helical tomotherapy and three-dimensional conformal radiation therapy (3DCRT). Materials and Methods: The patient was modeled with a humanoid phantom to mimic a gestation of 26 weeks. Radiotherapy with a total dose of 2 Gy was delivered with both tomotherapy (2.5 and 5.0 cm jaw size) and 3DCRT. The position of the fetus was predicted to be 45 cm from the field edge at the time of treatment. The delivered dose was measured according to the distance from the field edge and the fetus. Results and Discussion: The accumulated dose to the fetus was 1.6 cGy by 3DCRT and 2 and 2.3 cGy by the 2.5 and 5 cm jaw tomotherapy plans. For tomotherapy, the fetal dose with the 2.5 cm jaw was lower than that with the 5 cm jaw, although the radiation leakage was greater for 2.5 cm jaw plan due to the 1.5 fold longer beam-on time. At the uterine fundus, tomotherapy with a 5 cm jaw delivered the highest dose of 2.4 cGy. When the fetus moves up to 35 cm at the 29th week of gestation, the resultant fetal doses for 3DCRT and tomotherapy with 2.5 and 5 cm jaws were estimated as 2.1, 2.7, and 3.9 cGy, respectively. Conclusion: For tomotherapy, scattering radiation was more important due to the high monitor unit values. Therefore, selecting a smaller jaw size for tomotherapy may reduce the fetal dose. however, evaluation of risk should be individually performed for each patient.
{"title":"Fetal dose from Head and Neck Tomotherapy Versus 3D Conformal Radiotherapy","authors":"So-Hyun Park, W. Choi, Jinhyun Choi","doi":"10.14407/jrpr.2019.44.4.156","DOIUrl":"https://doi.org/10.14407/jrpr.2019.44.4.156","url":null,"abstract":"Background: To compare the dose of radiation received by the fetus in a pregnant patient irra-diated for head and neck cancer using helical tomotherapy and three-dimensional conformal radiation therapy (3DCRT). Materials and Methods: The patient was modeled with a humanoid phantom to mimic a gestation of 26 weeks. Radiotherapy with a total dose of 2 Gy was delivered with both tomotherapy (2.5 and 5.0 cm jaw size) and 3DCRT. The position of the fetus was predicted to be 45 cm from the field edge at the time of treatment. The delivered dose was measured according to the distance from the field edge and the fetus. Results and Discussion: The accumulated dose to the fetus was 1.6 cGy by 3DCRT and 2 and 2.3 cGy by the 2.5 and 5 cm jaw tomotherapy plans. For tomotherapy, the fetal dose with the 2.5 cm jaw was lower than that with the 5 cm jaw, although the radiation leakage was greater for 2.5 cm jaw plan due to the 1.5 fold longer beam-on time. At the uterine fundus, tomotherapy with a 5 cm jaw delivered the highest dose of 2.4 cGy. When the fetus moves up to 35 cm at the 29th week of gestation, the resultant fetal doses for 3DCRT and tomotherapy with 2.5 and 5 cm jaws were estimated as 2.1, 2.7, and 3.9 cGy, respectively. Conclusion: For tomotherapy, scattering radiation was more important due to the high monitor unit values. Therefore, selecting a smaller jaw size for tomotherapy may reduce the fetal dose. however, evaluation of risk should be individually performed for each patient.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84939665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-30DOI: 10.14407/jrpr.2019.44.3.103
Hyun Su Lee, Chansoo Choi, Chan Hyeong Kim, M. Han, Y. Yeom, T. Nguyen, Seonghoon Kim, S. Choi, S. Lee, Jina Kim, Jinho Hwang, Y. Kang
1Department of Nuclear Engineering, Hanyang University, Seoul, Korea; 2Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea; 3Division of Cancer Epidemiology & Genetics, National Cancer Institute, MD, USA; 4School of Nuclear Engineering and Environmental Physics, Hanoi University of Science and Technology, Ha Noi, Viet Nam; 5Department of Radiation Oncology, College of Medicine, Hanyang University, Seoul, Korea; 6Korea Institute of Radiological and Medical Sciences, Seoul, Korea; 7The Catholic University of Korea, Seoul, Korea
{"title":"Extra-phase Image Generation for Its Potential Use in Dose Evaluation for a Broad Range of Respiratory Motion","authors":"Hyun Su Lee, Chansoo Choi, Chan Hyeong Kim, M. Han, Y. Yeom, T. Nguyen, Seonghoon Kim, S. Choi, S. Lee, Jina Kim, Jinho Hwang, Y. Kang","doi":"10.14407/jrpr.2019.44.3.103","DOIUrl":"https://doi.org/10.14407/jrpr.2019.44.3.103","url":null,"abstract":"1Department of Nuclear Engineering, Hanyang University, Seoul, Korea; 2Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea; 3Division of Cancer Epidemiology & Genetics, National Cancer Institute, MD, USA; 4School of Nuclear Engineering and Environmental Physics, Hanoi University of Science and Technology, Ha Noi, Viet Nam; 5Department of Radiation Oncology, College of Medicine, Hanyang University, Seoul, Korea; 6Korea Institute of Radiological and Medical Sciences, Seoul, Korea; 7The Catholic University of Korea, Seoul, Korea","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74973191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-30DOI: 10.14407/jrpr.2019.44.3.118
Cheol-Su Kim, Sang-kuk Lee, Dong-Myung Lee, Seok-Won Choi
Results and Discussion: According to the result of the environmental radioactivity verification surveillance in the vicinity of nuclear power facilities in 2017, the anthropogenic radionuclides were not detected in most of the environmental samples except for the detection of a trace level of 137Cs, 90Sr, Pu, and 131I in some samples. Radioactivity concentration ratios between the anthropogenic radionuclides (137Cs/90Sr, 137Cs/239+240Pu, 90Sr/239+240Pu) were similar to those reported in the environmental samples, which were affected by the global fallout of the past nuclear weapon test, and Pu atomic ratios (240Pu/239Pu) in the terrestrial sample and marine sample showed significant differences due to the different input pathway and the Pu source. Radioactive iodine (131I) was detected at the range of < 5.6–190 mBq∙ kg-fresh–1 in the gulfweed and sea trumpet collected from the area of Kori and Wolsong intake and discharge. A high level of 3H was observed in the air (Sangbong: 0.688±0.841 Bq∙ m–3) and the precipitation (Meteorology Post: 199±126 Bq∙ L–1) samples of the Wolsong nuclear power plant (NPP). 3H concentration in the precipitation and pine needle samples showed typical variation pattern with the distance and the wind direction from the stack due to the gaseous release of 3H in Wolsong NPP.
{"title":"Assessment of Environmental Radioactivity Surveillance Results around Korean Nuclear Power Utilization Facilities in 2017","authors":"Cheol-Su Kim, Sang-kuk Lee, Dong-Myung Lee, Seok-Won Choi","doi":"10.14407/jrpr.2019.44.3.118","DOIUrl":"https://doi.org/10.14407/jrpr.2019.44.3.118","url":null,"abstract":"Results and Discussion: According to the result of the environmental radioactivity verification surveillance in the vicinity of nuclear power facilities in 2017, the anthropogenic radionuclides were not detected in most of the environmental samples except for the detection of a trace level of 137Cs, 90Sr, Pu, and 131I in some samples. Radioactivity concentration ratios between the anthropogenic radionuclides (137Cs/90Sr, 137Cs/239+240Pu, 90Sr/239+240Pu) were similar to those reported in the environmental samples, which were affected by the global fallout of the past nuclear weapon test, and Pu atomic ratios (240Pu/239Pu) in the terrestrial sample and marine sample showed significant differences due to the different input pathway and the Pu source. Radioactive iodine (131I) was detected at the range of < 5.6–190 mBq∙ kg-fresh–1 in the gulfweed and sea trumpet collected from the area of Kori and Wolsong intake and discharge. A high level of 3H was observed in the air (Sangbong: 0.688±0.841 Bq∙ m–3) and the precipitation (Meteorology Post: 199±126 Bq∙ L–1) samples of the Wolsong nuclear power plant (NPP). 3H concentration in the precipitation and pine needle samples showed typical variation pattern with the distance and the wind direction from the stack due to the gaseous release of 3H in Wolsong NPP.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79638423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-30DOI: 10.14407/jrpr.2019.44.3.89
Chan Hyeong Kim
The editorial committee of the Journal of Radiation Protection and Research (JRPR) is pleased to announce that, starting from this issue (September 2019), the JRPR is copublished by three societies — the Korean Association for Radiation Protection (KARP), the Japan Health Physics Society (JHPS), and the Australasian Radiation Protection Society (ARPS) — as the official journal of the three societies. Recently, KARP’s president, Prof. Woo-Yoon Park, proposed to make the JRPR, which had been KARP’s journal for more than 30 years, an international journal. Then, at the 5th Asian and Oceanic Congress on Radiation Protection (AOCRP-5) held in Melbourne, Australia in 2018, the presidents of the three societies agreed to adopt the JRPR as their joint, co-published journal. Since then, the editorial committee, the journal homepage, and all related documents have been revised to reflect the change. JRPR’s Editorial Committee now comprises three Editors-in-Chief representing the three societies, respectively, twelve Editors from the three societies (4 each), fifteen International Editors from foreign societies, and a Managing Editor in Korea who will run the JRPR on a daily basis. The JRPR, in order to broaden its global scope, will try to appoint International Editors from at least 12 foreign societies. The purpose of the JRPR is to disseminate scientific and technical information on radiation protection and related issues, covering both ionizing and non-ionizing radiations. The topics cover radiation physics and detection, radiation dosimetry, dose monitoring and evaluation, radiation biology and epidemiology, radiation risk assessment, radiation public health and environmental impacts, radiation safety and regulations, training and education, and social science and participation including social communication and risk communication. The new co-published JRPR is an open-access journal that is published four times a year (March 31, June 30, September 30, and December 31). The official language of the journal is English. The new JRPR is the output of a great amount of work in a relatively short time. The efforts of several members of the Editorial Committee are truly appreciated. Especially, the previous Managing Editor, Prof. Chul Hee Min, and the current Managing Editor, Prof. Geehyun Kim, are thanked for understanding the importance of a co-published international journal and for their time and effort in helping to realize it. Special thanks also go to Dr. Moon Hee Han, the previous Editor-in-Chief, both for his long service with the former JRPR and for his time and effort in helping to establish the new journal. It is believed that the new co-published JRPR, along with the well-established Asian and Oceanic Congress on Radiation Protection (AOCRP), will significantly enhance the exchange of scientific knowledge and experience in radiation protection among researchers in Asia, Oceania, and the entire world. Journal of Radiation Protection and Research 2
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