計器のオンライン状態監視技術
英字タイトル:
Online Monitoring of Nuclear Power Plants Instrumentation
著者:
林 俊文 Toshifumi HAYASHI 玉置 哲男 Tetsuo TAMAOKI 廣瀬 行徳 Yukinori HIROSE 榎本 光広 Mitsuhiro ENOMOTO 前川 立行 Tatsuyuki MAEKAWA 真杉 剛 Tsuyoshi MASUGI 清水 俊一 Shunichi SHIMIZU
発刊日:
公開日:
Condition-based MaintenanceInstrumentationNuclear Power PlantsSPRT
Online Monitoring of Nuclear Power Plants Instrumentation
著者:
林 俊文 Toshifumi HAYASHI 玉置 哲男 Tetsuo TAMAOKI 廣瀬 行徳 Yukinori HIROSE 榎本 光広 Mitsuhiro ENOMOTO 前川 立行 Tatsuyuki MAEKAWA 真杉 剛 Tsuyoshi MASUGI 清水 俊一 Shunichi SHIMIZU
発刊日:
公開日:
カテゴリ: 第5回
キーワードタグ:Condition-based MaintenanceInstrumentationNuclear Power PlantsSPRT
概要
The authors developed an online method to monitor the condition of sensors implemented in Nuclear Power Plants. The method employs Sequential Probability Ratio Test (SPRT), and calculates log-likelihood function of each sensor readings obtained through the plant process computer to determine whether the value of the l og-likelihood function exceeds a statistically defined setpoint. A study on data collected during startup testing of a BWR power plant showed that the method wa s applicable for 1824 sensors being evaluated. The authors confirmed that the method detected sensor drifts beyond the required precision for almost all cases.
