A quantitative accident analysis model on nuclear safety culture based on Bayesian network

2022 ◽  
Vol 166 ◽  
pp. 108703
Author(s):  
Young Gab Kim
Safety ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 45 ◽  
Author(s):  
Benoît Bernard

Traced back to the Chernobyl Accident analysis (INSAG-1), the concept of safety culture is regarded as a central phenomenon influencing behaviors and values within high-risk organisations. Many studies have already been conducted on safety culture within nuclear installations. Describing a model designed to capture and assess safety culture observations, this paper intends to highlight the role of safety culture within the overall regulatory nuclear safety oversight, and to show how intangible cultural elements can lead to the identification of tangible safety issues.


2021 ◽  
Vol 11 (10) ◽  
pp. 4511
Author(s):  
Guglielmo Lomonaco ◽  
Enrico Mainardi ◽  
Tereza Marková ◽  
Guido Mazzini

The topic of Nuclear Safety Culture touches several different aspects with contributions from the main organizations involved in nuclear projects and belonging to vendors, utility and regulators. Two nuclear safety directives issued by the European Commission emphasize the fundamental principle of national responsibility for nuclear safety and are implemented in each member country’s legislation. An example of fission implementation is highlighted, referring to the Czech Republic legislation; an example of application in fusion technology is the implementation of the Nuclear Safety Culture in the ITER project, located in Cadarache, in the south of France. The aim of the paper is to highlight the importance of this field, pointing out the cross reference between fission and fusion technology as applied in two countries, with concrete experiences and future prospects for nuclear technologies.


2011 ◽  
Vol 204-210 ◽  
pp. 1697-1700 ◽  
Author(s):  
Yu Jie Zheng

Radar EW system combat effectiveness evaluation is a essential link to Radar system Demonstration, mainly give service to selection, optimization and key factors analysis of Weapon equipment scheme. In this paper, we introduce the Bayesian network model into the area of Radar EW system combat effectiveness evaluation and put forward the concept of combat effectiveness evaluation model based on Bayesian network. The ability to express complex relationship, the ability to express the uncertainty of probability, and the reasoning functions. By learning from Expertise and Simulation data, excavating the hidden knowledge included in both of them, we can build the combat efficiency Analysis model, and then carry out efficient analysis.


Author(s):  
Wei Zhang ◽  
Chengbo Fei ◽  
Yuan Qi ◽  
Lili Yang ◽  
De Meng

2020 ◽  
Author(s):  
Kevin Gallahue

Author(s):  
Zhang Dabin ◽  
Zhiwei Zhou ◽  
Heng Xie ◽  
Tang Yang

The fusion-fission hybrid conceptual reactor is a proposed means of generating power, which adopts a water cooled fission blanket based on ITER. Due to the water cooled fission blanket, safety performance of the hybrid reactor should be considered, including decay heat remove, core uncovered, core meltdown, core degradation, radioactivity releases, etc., similar with the PWRs. The main goal of this work is to develop the fission blanket model by using MELCOR code, and to evaluate the safety performance under severe accidents preliminarily. Based on MELCOR 1.8.5, some modification is made for the severe accident analysis of fission blanket. Using modified MELCOR code, an analysis model is developed for the fission blanket and the cooling loop. The strategy of the In-Vessel Retention (IVR) using the ex-vessel cooling method is evaluated during a large break LOCA. The calculation results describes the main phenomena during the severe accident progression, including core dry out, meltdown, relocation, etc.. Simulation result is shown that the decay heat in the fission zone can be removed out by the ex-vessel cooling system merely, and the fuel max temperature will not reach the melting point.


Sign in / Sign up

Export Citation Format

Share Document