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      https://www.ias.ac.in/article/fulltext/pram/075/06/1253-1258

    • Keywords

       

      Laser cutting; underwater laser cutting; fibre optic beam delivery; Nd:YAG laser; material processing; heat affected zone; microstructure.

    • 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.

    • Author Affiliations

       

      R K Jain1 D K Agrawal1 S C Vishwakarma1 A K Choubey1 B N Upadhyaya1 S M Oak1

      1. Solid State Laser Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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