Title:
COOLANT PURIFICATION SYSTEM FOR BOILING WATER REACTOR
Document Type and Number:
Japanese Patent JP3075627
Kind Code:
B2
Abstract:
PURPOSE: To reduce the construction cost of a plant and the generation of radioactive waste, simplify operation action, improve plant heat efficiency and lower the possibility of occurrence of malfunction.
CONSTITUTION: High pressure coolant including impurity ion, suspension and the like driven by the pressure difference from a low pressure water condenser system passes a pipe drawn out of the reactor vessel 1 and a high temperature filtering and demineralizing device 2 capable of eliminating positive ion and suspension at high temperature which is provided in the middle of the pipe and flows in the condenser system. The coolant flow rate is controlled by a flow control valve 8 provided in the piping. To prevent flashing phenomenon due to sudden pressure drop of the coolant, a heat exchanger for cooling at upstream of the flow control valve 8 or a flash tank 9 at downstream is placed. The coolant is eliminated of impurities including negative ion by filtering demineralizing devices 15, 16, heated and pressurized by a heat exchanger and a pump in the condensed water and supply water system and sent into the reactor vessel 1 together with the condensed water from the main steam system side.
Inventors:
Shoichiro Kinoshita
Hidefumi Araki
Hidefumi Araki
Application Number:
JP3955792A
Publication Date:
August 14, 2000
Filing Date:
February 26, 1992
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G21C19/307; (IPC1-7): G21C19/307
Attorney, Agent or Firm:
Honda Kodaira (1 person outside)