ICONE15-10342 PLANNING AND EXECUTION OF DECONTAMINATION PRIOR TO DECOMMISSIONING 30 YEARS EXPERIENCE WITH CORD FAMILY AND AMDA FOR DECONTAMINATION IN OPERATING PLANTS AND PRIOR TO DECOMMISSIONING

抄録

This paper presents AREVA NP's 30 year experience in the field of decontamination. This paper is focused on decontamination prior to decommissioning and the highlights of the performed projects and results will be outlined. Advantages of the FSD short after final shutdown will be described. Since 1986 AREVA NP has been working regularly on the decontaminations prior to decommissioning and our decommissioning experience in this field cover all main NPP designs: ・1 application in a heavy water PWR of Siemens Design ・1 application in PWR of VVER design ・3 applications in PWR of Siemens design ・3 applications in PWR of Westinghouse design ・5 applications in BWR of GE design It will be demonstrated that decontaminations can be performed with CORD Family and AMDA even after 20 years of safe enclosure (see FSD Lingen and MZFR). Decontaminations can be performed either by using NPP systems / components or completely by using external decon equipment AMDA. In this context, CORD[○!R] (Chemical Oxidation Reduction Decontamination) represents the chemical decontamination process while AMDA[○!R] stands for Automated Mobile Decontamination Appliance. HP is used for permanganic acid as an oxidizing agent and UV for the in-situ decomposition of the decontamination chemicals with ultraviolet light.