• 제목/요약/키워드: Nuclear Emergency

검색결과 454건 처리시간 0.027초

EXPERT SYSTEM FOR A NUCLEAR POWER PLANT ACCIDENT DIAGNOSIS USING A FUZZY INFERENCE METHOD

  • Lee, Mal-Rey;Oh, Jong-Chul
    • Journal of applied mathematics & informatics
    • /
    • 제8권2호
    • /
    • pp.505-518
    • /
    • 2001
  • The huge and complicated plants such as nuclear power stations are likely to cause the operators to make mistakes due to a variety of inexplicable reasons and symptoms in case of emergency. That’s why the prevention system assisting the operators is being developed for. First of all. I suggest an improved fuzzy diagnosis. Secondly, I want to demonstrate that a classification system of nuclear plant’s accident investigating the causes of accidents foresees possible problems, and maintains the reliability of the diagnostic reports in spite of improper working in part. In the event of emergency in a nuclear plant, a lot of operational steps enable the operators to find out what caused the problems based on an emergent operating plan. Our system is able to classify their types within twenty to thirty seconds. As so, we expect the system to put down the accidents right after the rapid detection of the damage control-method concerned.

Empirical Approach for Evaluating or Upgrading EOP Strategies Using the Decision theory and Simulator

  • Kim, Sok-Chul;Lee, Duck-Hun;Kim, Hyun-Jang
    • 한국원자력학회:학술대회논문집
    • /
    • 한국원자력학회 1998년도 춘계학술발표회논문집(1)
    • /
    • pp.833-837
    • /
    • 1998
  • This paper presents preliminary findings regarding a modeling framework under development for use in a multi-attribute decision model for advanced emergency operating procedures(EOPs). This model provides a means for optimal decision making strategy for advanced emergency operating procedures conceptualizing the dynamic coordination of responsibilities and information in the human system interactions with advanced reactor systems. For the purpose of evaluation of the applicability of this modeling framework, an empirical case study for a post-cooldown strategy during an steam generator tube rupture (SGTR) accident was carried out. As a result, it was found empirically that the multi-attribute decision model is a useful tool for establishing advanced EOPs that reduce the operator's cognitive and decision making burden during the accident mitigation process.

  • PDF

Radiation Induces Phosphorylation of STAT3 in a Dose- and Time-dependent Manner

  • Gao, Ling;Li, Feng-Sheng;Chen, Xiao-Hua;Liu, Qiao-Wei;Feng, Jiang-Bin;Liu, Qing-Jie;Su, Xu
    • Asian Pacific Journal of Cancer Prevention
    • /
    • 제15권15호
    • /
    • pp.6161-6164
    • /
    • 2014
  • Background: We have reported the radiation could activate STAT3, which subsequently promotes the invasion of A549 cells. We here explored the dose- and time-response of STAT3 to radiation and the effect of radiation on upstream signaling molecules. Materials and Methods: A549 cells were irradiated with different doses of ${\gamma}$-rays. The expression of and nucleus translocation of p-STAT3 in A549 cells were detected by immunoblotting and immunofluorescence, respectively. The level of phosphorylated EGFR was also assessed by immunoblotting, and IL-6 expression was detected by real time PCR and ELISA. Results: Radiation promoted the phosphorylation of STAT3 at Y705 in a dose- and time-dependent manner and nuclear translocation. The level of phosphorylated EGFR in A549 cells increased after radiation. In additional, the mRNA and protein levels of IL-6 in A549 cells were also up regulated by radiation. Conclusions: STAT3 is activated by radiation in a dose-and time-dependent manner, probably due to radiation-induced activation of EGFR or secretion of IL-6 in A549 cells.

Trends in Risk Management and Accident Management in Nuclear Industry

  • Kim, Inn-Seock
    • 한국원자력학회:학술대회논문집
    • /
    • 한국원자력학회 1996년도 춘계학술발표회논문집(2)
    • /
    • pp.481-486
    • /
    • 1996
  • Safety management may be classified into three dimensions: (1) risk management, (2) accident management, and (3) emergency management. This paper addresses the recent trends of safety management in nuclear industry, focussing on risk management and accident management.

  • PDF