| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrosion reduction method for reactor structure materials by reducing an injection rate of hydrogen for preventing stress corrosion cracking, reducing transport of radioactivity to a turbine system and excess hydrogen quantity in off-gas system and resulting solution of metal oxide near noble metals due to adhesion of noble metals, corrosion of fuel materials and increase of hydrogen absorption. SOLUTION: By injecting solution or suspension containing metal or metal compound which forms a material causing an exciting current by the effect of one or more of radiation, light and heat existing in a light water cooled reactor or under the reactor conditions, the material causing the exciting current on the reactor structure materials. Also, by injecting hydrogen into reactor cooling water and controlling hydrogen concentration in supply water, a corrosion electric potential is controlled in the corrosion reduction method for the reactor structure material. COPYRIGHT: (C)2005,JPO&NCIPI
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