New generation of diamond toolings for facilitating decommissioning operations - 59396

Diamond tools are well proven cutting, drilling and grinding technologies in many applications but need to be specifically optimized and adapted for the complex and varied structures of nuclear power plant in view of decontamination and decommissioning. The proper development and use of diamond tools in these extreme and complex conditions can only be achieved thanks to the combined talent of experienced nuclear plant contractors, engineers, technicians, operators of diamond tools, and the use of specialized equipment. This present paper is an overview of the possible applications of diamond tools in the different operations of Nuclear Decommissioning and Decontamination. Key diamond tool applications for decommissioning and decontamination of nuclear power plant: 1. Wet/dry concrete wall sawing (with remote control system); 2. Wet/dry wire cutting of concrete; 3. Wet/dry wire sawing of metal; 4. Wet/dry core drilling; 5. Grinding and leveling for surface preparation including all Edges; 6. Scraping for removing bituminous or neoprene glues and all kinds of coatings; 7. Shaving for horizontal and vertical surfaces and ceilings Each situation requires a detailed feasibility study and engineering report to select the optimal work method and answer concerns about safety, time to completion and waste volume. Examples of nuclear industry requirements: 'Camel Tools' (minimal water supply to limit water / mud collection and decontamination). 100% dust collection Fast and easy change of tools Remote control systems High performances even in the strongest reinforced concretes Restricted presence of operators in contaminated areas Unquestionable reliability of the tools and equipment. (authors)