Induced nuclear reactions: processes – systems – and elements – Fission reactor material treatment – Post accident impurity or contaminant removal
Patent
1993-02-16
1994-04-19
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Fission reactor material treatment
Post accident impurity or contaminant removal
376310, G21C 1928
Patent
active
053053605
ABSTRACT:
High velocity reactor coolant water in a boiling water reactor or a pressurized water reactor transports radioactive ions and particles from a nuclear reactor vessel to the balance of the reactor coolant system where they deposit on chromium (III) oxide-containing surfaces. These radioactive deposits are removed in a dilute chemical decontamination process wherein permanganate ion-containing reactor coolant water is circulated throughout a reactor coolant system to oxidize chromium (III) oxide surfaces of the system to chromium (IV) oxide. Formic acid is added to the permanganate ion-containing reactor coolant water and then the formic acid-containing water is circulated throughout the reactor coolant system to reduce unreacted permanganate ions in the reactor coolant water to manganous ions.
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Bengel Thomas G.
Remark John F.
Valentine J. C.
Voss Frederick H.
Walsh Donald P.
Westinghouse Electric Corp.
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