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자료유형
학술저널
저자정보
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제49권 제7호
발행연도
2017.1
수록면
1,414 - 1,422 (9page)

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Remote response technology has advanced to the extent that a robot system, if properly designed anddeployed, may greatly help respond to beyond-design-basis accidents at nuclear power plants. Particularlyin the aftermath of the Fukushima accident, there is increasing interest in developing disasterrobots that can be deployed in lieu of a human operator to the field to perform mitigating actions in theharsh environment caused by extreme natural hazards. The nuclear robotics team of the Korea AtomicEnergy Research Institute (KAERI) is also endeavoring to construct disaster robots and, first of all, isinterested in finding out to what extent safety benefits can be achieved by such a disaster robotic system. This paper discusses a new approach based on the probabilistic risk assessment (PRA) technique, whichcan be used to quantify safety benefits associated with disaster robots, along with a case study forseismic-induced station blackout condition. The results indicate that to avoid core damage in this specialcase a robot system with reliability > 0.65 is needed because otherwise core damage is inevitable. Therefore, considerable efforts are needed to improve the reliability of disaster robots, because withoutassurance of high reliability, remote response techniques will not be practically used.

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