Development of underwater laser cutting technique for steel and zircaloy for nuclear applications |
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Authors: | R K Jain D K Agrawal S C Vishwakarma A K Choubey B N Upadhyaya and S M Oak |
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Institution: | (1) Department of Electromechanical Engineering, Faculty of Science and Technology, The University of Macau, Macau, China |
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Abstract: | In nuclear field, underwater cutting and welding technique is required for post-irradiation examination, maintenance, decommissioning
and to reduce storage space of irradiated materials like used zircaloy pressure tubes etc., of nuclear power plants. We have
developed underwater cutting technique for 4.2 mm thick zircaloy pressure tubes and up to 6 mm thick steel using fibre-coupled
250 W average power pulsed Nd:YAG laser. This underwater cutting technique will be highly useful in various nuclear applications
as well as in dismantling/repair of ship and pipe lines in water. |
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