发明名称 |
METHOD FOR CLEANING A STEAM GENERATING DEVICE OF A COMPRESSED WATER REACTOR |
摘要 |
<p>A method for cleaning steam generating devices of a pressurized water reactor treats the devices on their secondary sides at high pressure and high temperature. An aqueous cleaning solution is employed with EDTA, a reducing agent, and an alkalizing agent. Morpholine is used as the alkalization agent. A molar morpholine-concentration, which is at least as great as the molar concentration of EDTA, is selected. Hydrazine and/or formaldehyde are/is used as the reducing agent at a ratio to EDTA between 1:6 and 1:1.</p> |
申请公布号 |
EP1532638(B1) |
申请公布日期 |
2008.03.26 |
申请号 |
EP20030747911 |
申请日期 |
2003.08.19 |
申请人 |
AREVA NP GMBH |
发明人 |
BITTER, KONRAD;HOLLWEDEL, URSULA;SCHUSS, SILVIA |
分类号 |
G21F9/00;G21F9/28;B08B7/00;F28G9/00;G21C19/02;G21F |
主分类号 |
G21F9/00 |
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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