Method for treating the primary cooling medium of a pressurized

Details Method for treating the primary cooling medium of a pressurized Method for treating the primary cooling medium of a pressurized

1992-08-06

1994-05-24

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Corrosion or damage prevention

376305, 252631, G21C 900

Patent

active

053156269

ABSTRACT:
The invention is of a method for treating the primary cooling medium of a pressurized water nuclear reactor by controlling its efficiency through the H.sub.3 BO.sub.3 content in the cooling medium. Hydrazine hydrate (N.sub.2 H.sub.4 .multidot.H.sub.2 O) is continuously fed to the coolant of a reactor which is charged for energy generation, to such an extent that its content equals 5.10.sup.-6 to 5.10.sup.-2 g/kg coolant medium as well as KOH and/or LiOH which corresponds to the alkaline properties. KOH in an amount of 80 to 56 mg/kg cooling medium with respect to the amount of H.sub.3 BO.sub.3 in a range of 20 to 0 g/kg cooling medium and the excess hydrogen is removed from the system leaving a maximum amount of hydrogen in the coolant medium of 100 n.multidot.ml/kg.

REFERENCES:
patent: 3819476 (1974-06-01), Pockck et al.
patent: 4059671 (1977-11-01), Schmieder et al.
patent: 4828790 (1989-05-01), Honda et al.
patent: 4981641 (1991-01-01), Campion
patent: 5169563 (1992-12-01), Katayama

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