A protection Method for the primary loops metals of nuclear power plant
from corrosion was investigated. Hydrogen molecules were added to the
primary circuit to eliminate oxygen molecules produced by radiolysis of coolant
at the reactor core. The
hydrogen molecules were produced by electrolyses of
water and then added when the coolant water was passing through the primary
coolant circuit.
Thermodynamical process and the protection methods from corrosion were
discussed, the discussion emphasized on the removal of oxygen molecules as one
of the protection methods, and compared with other methods .The amount of
hydrogen molecules needed for complete removal of oxygen was estimated in
two cases: in the case without passing the water through the oxygen removal
system, and in the case of passing water through the system. A pressurized
water reactor VVER was chosen to be investigated in this study. The amount of
hydrogen molecules was estimated so as to eliminate completely the oxygen
molecules from coolant water. The estimated value was found to be less than
the permissible range for coolant water for such type of reactors.
