EQUIPMENT AND METHOD FOR PURIFYING PRIMARY COOLANT IN NUCLEAR POWER PLANT

摘要

PROBLEM TO BE SOLVED: To provide equipment and a method for purifying a primary coolant in a nuclear power plant with a pressurized water reactor which can decrease the treatment load and cost of radioactive wastes by reducing the quantity of waste resin and can cut down the purchase cost of an expensive Li-type cation exchanger resin by reducing the consumption of it. SOLUTION: The equipment for purifying the primary coolant in the nuclear power plant with the pressurized water reactor is equipped with at least a desalination tower of a coolant mix bed type filled with a mixed resin made of an Li-type cation exchanger resin and an anion exchanger resin and a desalination tower for coolant cations which is placed at the following stage and is filled with an H-type cation exchanger resin. The equipment has an Li-type resin receiving and mixing tower where the cation exchanger resin that has undergone Li-break in the desalination tower for the coolant cations and a new anion exchanger resin are received and mixed and a transportation line where the Li-type mixed resin is transported from the Li-type resin receiving and mixing tower to the desalination tower of the coolant mix bed type. The Li-break cation exchanger resin in the desalination tower for the coolant cations is reused as a resin for forming a mix bed of the desalination tower of the coolant mix bed type. COPYRIGHT: (C)2004,JPO