Real-time assessment of exposure dose to workers in radiological environments during decommissioning of nuclear facilities

Jeong, Kwan-Seong; Choi, Byung-Soon; Moon, Jei‐Kwon; Hyun, Dae Sung; Lee, Jong‐Hwan; Kim, Ikjune; Kim, Geun-Ho; Seo, JaeSeok; Jeong, Seung-Young; Lee, JungJun; Song, Han Wook; Lee, Sang−Wha; Son, Bong-Ki

doi:10.1016/j.anucene.2014.07.027

Cited by 19 publications

(4 citation statements)

References 1 publication

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“…Various studies have simulated the complex changing environment in the D&D process [4][5][6][7]. Some studies have analyzed the radiation-dose rate change using neutron analysis codes, e.g., the Monte Carlo N-Particle Transport Code (MCNP), and three-dimensional (3D) computer-aided design (CAD) modeling.…”

Section: Jrprmentioning

confidence: 99%

Analysis of the Work Time and the Collective Dose by Correcting the Learning-Forgetting Curve Model in Decommissioning of a Nuclear Facility

Lee¹,

Kim²,

Lee³

2023

J Radiat Prot Res

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Background: As the number of nuclear facilities nearing their pre-determined design life increases, demand is increasing for technology and infrastructure related to the decommissioning and decontamination (D&D) process. It is necessary to consider the nature of the dismantling environment constantly changing and the worker doing new tasks. A method was studied that can calculate the effect of learning and the change in work time on the work process, according to the learning-forgetting curve model (LFCM).Materials and Methods: The LFCM was analyzed, and input values and scenarios were analyzed for substitution into the D&D process of a nuclear facility.Results and Discussion: The effectiveness and efficiency of the training were analyzed. It was calculated that skilled workers can receive a 16.9% less collective radiation dose than workers with only basic training.Conclusion: Using these research methods and models, it was possible to calculate the change in the efficiency of workers performing new tasks in the D&D process and the corresponding reduction in the work time and collective dose.

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Section: Jrprmentioning

confidence: 99%

Analysis of the Work Time and the Collective Dose by Correcting the Learning-Forgetting Curve Model in Decommissioning of a Nuclear Facility

Lee¹,

Kim²,

Lee³

2023

J Radiat Prot Res

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“…Dose point displays the radiation map in 3D space using points with different colours, as shown in figure 6(A). Differing from the representation of dose cubes in (Jeong et al 2014), dose cuboid has its own dose rates and independent colours and its size is 0.5 m×2 m×0.5 m (width×height×length), as shown in figure 6(B). Dose mesh displays the radiation map at a height of 1 m using a mesh with different colours according to the dose rates, as shown in figure 6(C).…”

Section: Visualisation Of the Radiation Mapmentioning

confidence: 99%

A fast simulation method for radiation maps using interpolation in a virtual environment

Li¹,

Liu²,

Peng³

et al. 2018

J. Radiol. Prot.

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In nuclear decommissioning, virtual simulation technology is a useful tool to achieve an effective work process by using virtual environments to represent the physical and logical scheme of a real decommissioning project. This technology is cost-saving and time-saving, with the capacity to develop various decommissioning scenarios and reduce the risk of retrofitting. The method utilises a radiation map in a virtual simulation as the basis for the assessment of exposure to a virtual human. In this paper, we propose a fast simulation method using a known radiation source. The method has a unique advantage over point kernel and Monte Carlo methods because it generates the radiation map using interpolation in a virtual environment. The simulation of the radiation map including the calculation and the visualisation were realised using UNITY and MATLAB. The feasibility of the proposed method was tested on a hypothetical case and the results obtained are discussed in this paper.

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“…The human model in the virtual decommissioning environments has a feature of detecting the amount of collision between the human model and exposure dose distribution [3]. The scope of collision between the human model and exposure dose distribution is 20 cm in radius, and the height of human model is 175 cm as shown in Fig.…”

Section: Configuration Of the Human Modelmentioning

confidence: 99%

A training system based on virtual environments to prevent incidents and reduce accidents during decommissioning of nuclear facilities

Jeong¹,

Choi²,

Moon³

et al. 2016

Int. J. SAFE

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Decommissioning of nuclear facilities should be accomplished by assuring the safety of workers because these decommissioning activities take place under high radioactivity and difficult work conditions. Before decommissioning, it is necessary to evaluate and assess the radiation exposure dose of workers under the principle of ALARA (as low as reasonably achievable). Furthermore, to improve the proficiency of decommissioning environments, methods and systems need to be developed. The legacy methods of exposure dose measurement and assessment have the limitations to modify and simulate the exposure dose of workers prior to practical activities because those should be accomplished without changes of working routes under predetermined scenarios. To simulate many decommissioning scenarios, decommissioning environments were designed in virtual reality. To simulate and assess exposure dose of workers, a human model was also designed in a virtual environment. These virtual decommissioning environments made it possible to simulate and assess in real time the exposure dose of workers. It can be concluded that this system is able to protect workers from accidents and enable them to improve their familiarization about their working environment. This system is expected to reduce human errors because workers can improve their proficiency of hazardous working environments due to virtual training like real decommissioning situations. In the end, safety during decommissioning of nuclear facilities will be guaranteed under the principle of ALARA.

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Real-time assessment of exposure dose to workers in radiological environments during decommissioning of nuclear facilities

Cited by 19 publications

References 1 publication

Analysis of the Work Time and the Collective Dose by Correcting the Learning-Forgetting Curve Model in Decommissioning of a Nuclear Facility

Analysis of the Work Time and the Collective Dose by Correcting the Learning-Forgetting Curve Model in Decommissioning of a Nuclear Facility

A fast simulation method for radiation maps using interpolation in a virtual environment

A training system based on virtual environments to prevent incidents and reduce accidents during decommissioning of nuclear facilities

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