Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Corrosion or damage prevention
Patent
1993-03-18
1995-03-14
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Corrosion or damage prevention
376310, G21C 19307
Patent
active
053982690
ABSTRACT:
A water quality control method for a nuclear power plant comprising the steps of maintaining the iron concentration in the feed water below 0.05 ppb by increasing iron removing rate at a condensed water purifying loop, shifting the pH of the reactor water below a pH of 6.8 determined at a room temperature by injecting carbon dioxide gas in the primary cooling system and further optionally reducing the dissolved oxygen concentration in the reactor water below 20 ppb by injecting hydrogen gas into the primary cooling system, whereby .sup.60 Co ion concentration in the primary cooling system is maintained low for a long interval.
REFERENCES:
patent: 4042455 (1977-08-01), Brown
patent: 4894202 (1990-01-01), Nagase et al.
patent: 5015436 (1991-05-01), Nagase et al.
patent: 5245642 (1993-09-01), Lin
Journal of Nuclear Science and Technology, 24, pp. 289-296, Apr. 1987.
Asakura Yamato
Nagase Makoto
Ohsumi Katsumi
Sawa Toshio
Takeda Renzo
Hitachi , Ltd.
Wasil Daniel D.
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