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Padma Nilaya, J.; Biswas, Dhruba J.; Kumar, Aniruddha
Bhabha Atomic Research Centre, Mumbai (India)2010
Bhabha Atomic Research Centre, Mumbai (India)2010
AbstractAbstract
[en] Laser assisted removal of loosely bound fuel particulates from the clad surface following the process of pellet loading has decided advantages over conventional methods. It is a dry and noncontact process that generates very little secondary waste and can occur inside a glove box without any manual interference minimizing the possibility of exposure to personnel. The rapid rise of the substrate/ particulate temperature owing to the absorption of energy from the incident laser pulse results in a variety of processes that may lead to the expulsion of the particulates. As a precursor to the cleaning of the fuel elements, initial experiments were carried out on contamination simulated on commonly used clad surfaces to gain a first hand experience on the various laser parameters for which as efficient cleaning can be obtained without altering the properties of the clad surface. The cleaning of a dummy fuel element was subsequently achieved in the laboratory by integrating the laser with a work station that imparted simultaneous rotational and linear motion to the fuel element. (author)
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Apr 2010; 33 p; 7 refs., 14 figs., 2 tabs.
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Report
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ACTINIDE COMPOUNDS, ACTINIDE NUCLEI, ALLOYS, ALPHA DECAY RADIOISOTOPES, CHALCOGENIDES, CLEANING, ENERGY SOURCES, EVEN-ODD NUCLEI, FUELS, HEAVY ION DECAY RADIOISOTOPES, HEAVY NUCLEI, ISOTOPES, LASERS, MATERIALS, NEON 24 DECAY RADIOISOTOPES, NUCLEAR FUELS, NUCLEI, OXIDES, OXYGEN COMPOUNDS, RADIOISOTOPES, REACTOR COMPONENTS, REACTOR MATERIALS, SOLID FUELS, SOLID STATE LASERS, SPONTANEOUS FISSION RADIOISOTOPES, TRANSITION ELEMENT ALLOYS, URANIUM COMPOUNDS, URANIUM ISOTOPES, YEARS LIVING RADIOISOTOPES, ZIRCONIUM ALLOYS, ZIRCONIUM BASE ALLOYS
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