<b>Fault Tree Synthesis for Sequential Control Circuit based </b><b>on Automatica/ly Searched Signal Path </b>

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  • <b>信号経路自動探索によるフォールトツリー自動生成 </b><b>実システムヘの応用 </b>
  • 信号経路自動探索によるフォールトツリー自動生成--実システムへの応用
  • シンゴウ ケイロ ジドウ タンサク ニ ヨル フォールトツリー ジドウ セイセ
  • <b>Application of the Fault Tree Synthesis System to Complex System </b>

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Abstract

<p><tt>ChemiGal plants and nuclear power plallts have been safeguarded by pmtective instrumentation systems which are usually equipped with sequential control circuits。The c(mtrol circuits in aut()matic protective system are required to achieve the object in case of emergeacy that will occur in plants、And sequential control circuits play a very imp(〕rtant role in system which deal with the complex signal such as stand-by safety system. In last paper,we have proposed the basic algorithm xvhich searches signal path for sequential control circuit an〔i constructs the fault tree and developed the fault tree synthesis system.Ill this paper,this system is illustrated for more complex system and clari且ed the effectiveness and the applicability of proposed method.This system is applied to Core Spray System Auto Initiation Circuit hl the Browns Ferry Nuclear Plant and is shown to be successfully applied to the </tt><tt>synthesis of fault tree for complex system. </tt></p>

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