Methodology for analyzing risk at nuclear facilities

Yoo, Hyunjun; Lee, Nayoung; Ham, Taekyu; Seo, Janghoon

doi:10.1016/j.anucene.2015.02.041

Cited by 11 publications

(4 citation statements)

References 2 publications

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“…Hence, the aggregations of three kinds of indicators will be computed, respectively, according to the combination rule of Dempster-Shafer theory of evidence, noted as M s , M m , and M w , shown in Table 6. Chlorine trifluoride Medium I 10 Nickel powder, high purity Medium I 11 Gasket, large Weak I 12 Feed system/product and tails withdrawal Weak I 13 Expansion bellows Weak I 14…”

Section: Applicationmentioning

confidence: 99%

“…Since improper use of nuclear energy may cause mass destruction, it is necessary to evaluate nuclear safeguards and limit the development of nuclear detonations. Nuclear safeguards evaluations [9][10][11][12][13][14] are invoked to test and verify that states meet with the international treaty, which put forward by International Atomic Energy Agency (IAEA) and make sure that those nuclear materials will not be used to manufacture nuclear weapons. In order to make the evaluation of indicators and then make the final assessment of the States' declarations to the institution concerning any activity which are related to nuclear power, the IAEA experts collect relevant information from some main sources: information provided by the State itself, Internet and newspapers, and nonsafeguards IAEA databases.…”

Section: Introductionmentioning

confidence: 99%

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An evidential evaluation of nuclear safeguards

Gao

Deng

2019

International Journal of Distributed Sensor Networks

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Nuclear safeguards evaluation is a complicated issue with many missing values and uncertainties. By invoking Dempster-Shafer theory of evidence, the missing values are assigned to a subset of a set of multiple objects, at the same time, by combining different evaluation values, and the effect of uncertainty will be decreased. In this way, both the missing values and uncertainties are considered in the final evaluations. This method has been used in considering the International Atomic Energy Agency experts' evaluation for nuclear safeguards. The result shows that (s 2 , 0.1897) is the biggest belief degree.

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Section: Applicationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An evidential evaluation of nuclear safeguards

Gao

Deng

2019

International Journal of Distributed Sensor Networks

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“…Most known nuclear security events were carried out by insiders or at least with the help of insiders [5]. It is speculated that the theft of highly enriched uranium in Russia and the destruction of nuclear power plants in Belgium, which caused significant economic losses, were carried out by unidentified insiders [6]. Due to the high radioactivity in the spent fuel treatment process, as well as the closure of equipment, pipelines and radioactive solution valves in the heavy concrete equipment room or hot room, personnel cannot access nuclear materials.…”

Section: Introductionmentioning

confidence: 99%

Evolutionary Game Model of Internal Threats to Nuclear Security in Spent Fuel Reprocessing Plants Based on RDEU Theory

Zou

Jia-hua³

2022

Sustainability

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The internal threat to nuclear security is one of the most serious problems in the physical protection supervision of spent fuel reprocessing plants. Both insiders and nuclear security departments have obvious characteristics of situational decision making and even irrational decision making. Combined with Game theory and RDEU theory, the RDEU Game model of insiders and nuclear security departments was constructed to analyze the existence of equilibrium solutions of two-way strategies under different emotional states. From a dynamic point of view, the influence and change process of emotion on participants’ decision-making behavior were analyzed. Then, the model was numerically simulated to verify its accuracy and effectiveness, which showed that different emotional states and intensities would not only affect the final result of evolutionary equilibrium, but also change the evolution speed of the strategies. In addition, compared with insiders, the intensity of pessimism in the nuclear security department had a greater impact on the game equilibrium. Finally, we present some reasonable recommendations to prevent and protect nuclear security events at spent fuel reprocessing plants by strengthening the emotional supervision and guidance of insiders and the nuclear security department.

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“…Such evaluation involves the destructive testing of a fixed number of macroscopic specimens inserted in surveillance capsules located near the RPV inner wall prior to the initial reactor start-up. The surveillance specimens are taken out-of-pile at a selected periodicity (a few years, typically) and then handled, tested, and disposed of in hot cell facilities [10,11,12]. Although reliable, this conventional approach is timeconsuming and extremely costly and lacks flexibility.…”

Section: Introductionmentioning

confidence: 99%