JP2865726B

• Main Authors: IBE HIDEFUMI, AKAMINE KAZUHIKO
• Format: Patent
• Language: English
• Published: 08.03.1999
• Edition: 6
• Subjects: GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR POWER PLANT; NUCLEAR REACTORS; PHYSICS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

PURPOSE:To intend improvement of a corrosive environment at a reactor bottom part by controlling an amount of hydrogen injection along with concurrently sampling reactor water at a nuclear reactor bottom to monitor a corrosive environment. CONSTITUTION:A branch line is provided between a nuclear reactor drain valve 19 on a drain line 12 and a nuclear reactor isolation valve 20 provided at an upstream side of the valve 19, and is constituted so as to make reactor water which passes through a corrosive environment monitor 1, return into a nuclear reactor 4. Measured data by the monitor 1 are fed to a hydrogen injection device 2 of a feed water system by a controller 3. Incidentally, the valve 20 is constituted to open, to introduce the water into the monitor 1 and to enable measurement of water quality only when the corosive environment is monitored. In this way, an amount of the hydrogen injection from the device 2 to a reactor core, can be controlled along with direct monitoring of a nuclear reactor bottom part, in other words, the water quality at a lower part of the reactor core and the corrosive environment there, and therefore the corrosive environment can be effectively mitigated.