Method of inhibiting radioactive substances from eluting into cooling water in a nuclear plant and an apparatus therefor

摘要: Disclosed is a method and apparatus for inhibiting radioactive substances eluting into cooling water of nuclear plant. The uses an index consisting amount iron adhered onto the fuel cladding surface, that calculated from concentration operation time. A formation layer oxide on surface confirmed based upon covering ratio 100%. When smaller than 100%, in controlled to remain constant at maximum concentration. Fe/Ni molar adjusted be set about 2 10 after reaches 58 Co ion 60 concentrations can decreased without greatly increasing precipitating crud, dosage primary system time regular checking.