HYDROGEN PEROXIDE CONCENTRATION REDUCING DEVICE FOR NUCLEAR POWER PLANT

摘要

PROBLEM TO BE SOLVED: To reduce the concentration of hydrogen peroxide generated by radiolysis of a nuclear reactor water in a boiling water nuclear power plant. SOLUTION: A nuclear reactor blow piping 24 having a nuclear reactor cooling water blow stop valve 25 is connected between a nuclear reactor water purifying facility 26 and a main condenser hot well 16. An anion-exchange resin column 51 packed with only a strongly basic anion-exchange resin is connected between the purifying facility 26 and the stop valve 25 in the piping 24 via a flow-in piping 52, a return line 68 is connected to a flow-out piping 54 side of the column 51, and the return piping 68 is connected to the piping 24 between the stop valve 25 and the hot well 16. Hydrogen peroxide is decomposed by alkalescence of the strongly basic anion-exchange resin.