Induced nuclear reactions: processes – systems – and elements – Fission reactor material treatment – Impurity removal
Patent
1990-02-06
1992-07-21
Hunt, Brooks H.
Induced nuclear reactions: processes, systems, and elements
Fission reactor material treatment
Impurity removal
376256, 376245, 376305, G21C 1942
Patent
active
051320754
ABSTRACT:
Measurement values of conductivity of pH of water in the primary cooling water system of a boiling water atomic power plant are input through on-line and the measurement values of conductivity and pH at times of measurement when water quality changes are compared with values at the time of normal operation. Tendencies to increase or decrease the conductivity and pH are combined to prepare one diagnosis data, and causes of anomaly in progress in component apparatus members are discriminated and diagnosed by the diagnosis data. By using a correlation between logarithm of conductivity and pH in preparing the diagnosis data from combinations of conductivity and pH, causes of anomaly can be diagnosed more accurated.
REFERENCES:
patent: 4853638 (1989-08-01), Endou et al.
patent: 4880595 (1989-11-01), Matsuda et al.
patent: 4937038 (1990-06-01), Sakai et al.
Structural Material Anomaly Detection System Using Water Chemistry Data, (IV) Diagnosis of Causes of Anomaly in Water Chemistry by Analysing Correlations Between Conductivity and pH Data by Yamato Asakura et al. Journal of Nuclear Science and Technology vol. 27, No. 7, pp. 617-625 Jul. 1990.
Diagnosis of Causes of Anomaly in Water Chemistry by Analysing Correlations.
Between Conductivity and pH data by Yamato Asakura et al.
Journal of Nuclear Science And Technology vol. 27, No. 7, pp. 617-625 Jul. 1990.
Asakura Yamato
Nagase Makoto
Uchida Shunsuke
Utamura Motoaki
Chelliah Meena
Hitachi , Ltd.
Hunt Brooks H.
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