PLANT ACCIDENT TIME OPERATION SUPPORT SYSTEM

• Main Authors: KATONO KENICHI, KAMOSHITA RYOTA, ISHIKAWA TADAAKI, KANEDA MASAKI, ISHII YOSHIHIKO, ARITA SETSUO
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2015
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

PROBLEM TO BE SOLVED: To provide a plant accident time operation support system for estimating an event while reflecting states of a plant changing over time at a time of a plant accident in the event.SOLUTION: According to the present invention, a plant accident time operation support system comprises: an event narrowing device narrowing down candidates of an event that occurs based on at least one of a sensor signal, a device state signal, and an alarm signal as well as a discrimination rule; an event analysis device analyzing a plant behavior based on a plurality of event narrowing results output from the event narrowing device, the sensor signal, the device state signal, and the alarm signal; and an event estimation device comparing an analysis result of analyzing a process state output from the event analysis device with the sensor signal and estimating the event that occurs, and the event estimation device outputs the analysis result for the process state corresponding to the event that occurs and the sensor signal as an event estimation result. 【課題】発明の目的は、プラント事故時にプラントの時々刻々と変化する状態を反映して事象を推定するプラント事故時運転支援システムを提供することにある。【解決手段】本発明は、センサ信号、機器状態信号又は警報信号のうち少なくとも１つと、判別ルールを基に発生している事象候補を絞り込む事象絞込み装置、該事象絞込み装置の出力である複数の事象絞込み結果、センサ信号、機器状態信号、警報信号に基づいてプラント挙動を解析する事象解析装置、該事象解析装置の出力であるプロセス状態を解析した解析結果とセンサ信号とを比較して発生事象を推定する事象推定装置を備え、該事象推定装置が発生事象に対応するプロセス状態の解析結果とセンサ信号を事象推定結果として出力することを特徴とする。【選択図】図１