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首页> 美国政府科技报告 >Preliminary Findings of the Effect of Surface Finish and Coatings on PuO sub 2 Contamination Hold-Up and Ease of Decontamination in Aqueous and Non-Aqueous Media
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Preliminary Findings of the Effect of Surface Finish and Coatings on PuO sub 2 Contamination Hold-Up and Ease of Decontamination in Aqueous and Non-Aqueous Media

机译：表面处理和涂层对puO sub 2污染物滞留和水和非水介质中去污的影响的初步结果

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The application of temporary and permanent coatings for the reduction of alpha -activity hold-up and increased ease of decontamination has been reviewed and a variety of surface treatments and coatings identified as being worthy of investigation. A range of specimens have been prepared with hard coatings and smooth surfaces. A number of adhesive films, paints and lacquers have been applied to mild and stainless steel substrates. In order to compare the different surfaces, a standard contamination technique using a mechanical wiper has been developed to reproducibly contaminate the materials with PuO sub 2 . A standard decontamination test using water/Decon 75 or Arklone X is being used to compare the ease of decontamination. Preliminary experiments have shown that the smoothest surface finishes have the lowest activity hold-up and are more easily cleaned. Due to the superior level of micro-smoothness attainable on metals, these showed a significantly lower activity retention than the organic coatings examined to date. A comparison of the relative efficiency of cleaning in Decon 75 and Arklone X showed that generally speaking metal surfaces were cleaned equally well by both media, while the unaged organic surfaces were decontaminated more thoroughly in Arklone X, though the differences were somewhat marginal. (Atomindex citation 16:038353)

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