Effects of cooling channel blockage on fuel plate temperature in Tehran Research Reactor

Effects of cooling channel blockage on fuel plate temperature in Tehran Research Reactor 1 corresp first-author E-mail address: ftabbakh2000@yahoo.com E-mail address: ftabbakh2000@yahoo.com ftabbakh2000@yahoo.com School of Nuclear Science, Institute of Nuclear Reactors and Accelerators, Atomic Energy Organization of Iran, Tehran, Iran School of Nuclear Science, Institute of Nuclear Reactors and Accelerators, Atomic Energy Organization of Iran, Tehran, Iran In this study, the variation of the temperature distribution of the fuel plate in Tehran Research Reactor core was studied in case of coolant channels blockage. While the experimental method is not possible, both the analytical and simulation methods were used to obtain the more reliable data. The results show that one channel blockage will increase the fuel temperature to about 100%, but it does not lead to clad melt down still. With further calculation and simulation it is understood that if the coolant velocity drops to 90% of its nominal value, it may causes the clad melting down. At least two channels with complete blockage even at the positions far from the core center can also melt down the clad. Tehran Research Reactor (TRR) Coolant channel blockage ANSYS11 References Abou Yahia H , Dodd B , Hargital T . International atomic energy agency safety standards for protecting people and the environment. Safety Guide DS340 . 2006 : 4 - 7 International atomic energy agency safety standards for protecting people and the environment. Safety Guide DS340 Martin C , El-Guebaly L . Fusion Sci Technol , 2007 , 52 ( 4 ): 985 - 989 . Fusion Sci Technol Abou Yahia H , Bars G . DSR-78: The safety demonstrations for research reactors and the need for harmonization . TRTR-IGORR Meeting , Gaithersburg, MD, USA , September, 2005 : 1 - 7 . DSR-78: The safety demonstrations for research reactors and the need for harmonization Harmon C D , Busch R D . Monte Carlo N-Particle Transport Code System . New Mexico : Los Alamos National Laboratory , 1994 : 7 - 8 . Monte Carlo N-Particle Transport Code System Damjanic F , Huang H C , Zhu Y Y . ANSYS thermal analysis guide , 2007 . http://tigger.uic.edu/depts/accc/software/ansys/html/guide_55/g-the/GTHEToc.htm . ANSYS thermal analysis guide Lienhard J H . A heat transfer text book . Massachusetts : Phlogiston Press , 3 rd Ed., 2006 : 704 - 718 . A heat transfer text book Mills A F . Heat transfer . London : Prentice Hall , 1999 : 668 - 671 . Heat transfer Naraghi M H , Quentmeyer R J , Mohr D H . AIAA-2001-3406: Effect of a blocked channel on the wall temperature of a regeneratively cooled rocket thrust chamber . AIAA/ASME/SAE/ASEE 37th Joint Propulsion Conference and Exhibit , Salt Lake City, UT , July, 2001 :. 1 - 6 . AIAA-2001-3406: Effect of a blocked channel on the wall temperature of a regeneratively cooled rocket thrust chamber Ipek O , Yapici H , Ozceyhan V . The Arabic journal of Science and Engineering , 2004 , 29 ( 1A ): 43 - 65 . The Arabic journal of Science and Engineering 10.13538/j.1001-8042/nst.20.184-187 2009-01-15 2009-06-20 2021-01-19 2009 Nuclear Science and Techniques 03 20