发明名称 |
Method of stress corrosion cracking mitigating for nuclear power plant structural materials |
摘要 |
The object of this invention is to provide a method for mitigating a stress corrosion cracking of reactor structural material which makes it possible to suppress the rise in the main steam line dose rate without secondary effects such as a rise in the concentration of radioactive cobalt-60, etc. in the reactor water. Hydrogen and a reductive nitrogen compound containing nitrogen having a negative oxidation number (for example, hydrazine) are injected into the core water of boiling water nuclear power plant. By injecting the reductive nitrogen compound containing nitrogen having a negative oxidation number into the core water, the stress corrosion cracking of structural material of reactor can be mitigated without side reactions such as a rise in the concentration of cobalt-60, etc.
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申请公布号 |
US7869557(B2) |
申请公布日期 |
2011.01.11 |
申请号 |
US20090354925 |
申请日期 |
2009.01.16 |
申请人 |
HITACHI-GE NUCLEAR ENERGY, LTD. |
发明人 |
ISHIDA KAZUSHIGE;WADA YOICHI;NAGASE MAKOTO;TACHIBANA MASAHIKO;ENDO MASAO;FUSE MOTOMASA;USUI NAOSHI;AIZAWA MOTOHIRO |
分类号 |
G21C9/00;G21D3/08;G21C17/00;G21D1/00 |
主分类号 |
G21C9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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