公开(公告)号：US20150364226A1

公开(公告)日：2015-12-17

申请号：US14650543

申请日：2013-12-11

申请人： AREVA GMBH

发明人： Luis SEMPERE BELDA ,  Jose Pedro MOREIRA DO AMARAL ,  Christian TOPF

IPC分类号： G21F9/00

CPC分类号： G21F9/004 ,  G21F9/28 ,  G21F9/30

摘要： The invention relates to a process for the chemical decontamination of a surface, having an oxide layer of a metallic component of the coolant system of a nuclear power station, which comprises at least one oxidation step in which the oxide layer is treated with an aqueous solution containing an oxidant and a subsequent decontamination step in which the oxide layer is treated with an aqueous solution of a decont. acid which has the property of forming a sparingly soluble precipitate with metal ions, in particular with nickel ions. Prior to carrying out the decontamination step, metal ions which have gone into solution during the oxidation step are removed from the aqueous solution by means of a cation exchanger.

摘要翻译： 本发明涉及具有核电站冷却剂系统的金属部件的氧化物层的表面的化学去污的方法，该方法包括至少一个氧化步骤，其中氧化物层用水溶液处理 含有氧化剂和随后的去污步骤，其中用脱水水溶液处理氧化物层。 其具有与金属离子形成微溶性沉淀物的特性，特别是与镍离子形成的性质。 在进行去污步骤之前，通过阳离子交换器从氧化步骤中溶解的金属离子从水溶液中除去。