نوع مقاله : مقاله پژوهشی
نویسندگان
پژوهشکده راکتور و ایمنی هسته‌ای، پژوهشگاه علوم و فنون هسته‌ای، سازمان انرژی اتمی ایران، صندوق پستی: 55933-14399، تهران ـ ایران
چکیده
با توجه به مراحل انجام بارگذاری یا جابه‌جایی مجتمع سوخت در قلب رآکتور تحقیقاتی تهران، بر اساس الزامات ایمنی می‌بایست احتمال سقوط یک مجتمع سوخت و آسیب وارده به آن درنظر گرفته شود تا از حفظ یکپارچگی مجتمع‌ها و عدم آسیب به صفحات سوخت پس از حادثه سقوط احتمالی اطمینان حاصل گردد. در این شبیه‌سازی از نرم‌افزار ABAQUS برای تحلیل برخورد استفاده می‌شود. سه حالت برای سقوط مجتمع سوخت و برخورد آن به کف استخر درنظر گرفته می شود که شامل برخورد عمودی، با زاویه 45 درجه و برخورد افقی است. براساس تحلیل تنش انجام شده مشخص گردید که حالت برخورد عمودی با کف استخر بدترین نوع برخورد بوده که می تواند آسیب به side plateها یا همان صفحات کناری مجتمع را دربرداشته باشد اما صفحات سوخت داخل مجتمع آسیب جدی ندیده و یکپارچگی خود را حفظ می‌نمایند.
کلیدواژه‌ها
عنوان مقاله [English]
Safety assessment of the fuel assembly drop accident in Tehran Research Reactor
نویسندگان [English]
- B. Roostaii
- B. Rokrok
- ُS. Safaei Arshi
Reactor and Nuclear Safety Research School, Nuclear Science and Technology Research Institute, AEOI, P.O.Box: 14399-55933, Tehran - Iran
چکیده [English]
According to the process of loading, unloading, and shuffling a fuel assembly in Tehran Research Reactor core, the possibility of a fuel assembly fall and consequent damage must be considered in order to ensure the integrity of the assembly and no damage to the fuel plates after a possible drop accident based on the safety requirements. In this simulation, ABAQUS software is used for collision analysis. Three modes are considered for the drop of the fuel assembly and its impact on the bottom of the pool, which includes a vertical impact, with an angle of 45 degrees, and a horizontal impact. Based on the stress analysis, it was determined that the vertical collision with the bottom of the pool was the worst type, which could damage the side plates of the assembly, but the fuel plates inside the assembly were not seriously damaged and kept their integrity.
کلیدواژه‌ها [English]
- Research reactor
- Fuel assembly
- Drop accident
- ABAQUS software
- Stress analysis
- International Atomic Energy Agency, Accident Analysis for Nuclear Power Plants. IAEA Safety Reports Series. No. 23. Vienna (2002).
- International Atomic Energy Agency, Safety of Research Reactors. IAEA Safety Standards Series. No. NS-R-4. Vienna (2005).
- Hotta A, Kawahara H. Study on fuel assembly drop accident. Transactions of the 10th international conference on structural mechanics in reactor technology. United States. 1989.
- Liang Y, Yang Jie. Study on Numerical Simulation of Drop Impact of Spent Fuel Transfer Equipment. Nuclear Energy Engineering Journal. 2022;43(2):122-125.
- Wu H.J, Tseng C.C, Cheng S.C. A Numerical Analysis for a BWR Fuel Assembly Drop Event. J. Nucl. Sci. Technol. 2006;43:1068-1073.
- Petkevich P, Abramov V, Yuremenko V, Piminov V. Makarov V, Afanasiev A. Simulation of the nuclear fuel assembly drop test with LS-Dyna. Nuclear Engineering and Design. 2014;269:136-141.
- Aleshin Y, Cerracin A, Park N.G, Yoo Y.I. Simulation methodology for fuel assembly drop accident during handling. American Nuclear Society-ANS, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States). 2016.
- Dai M, Fu P, Zhao J. Criticality Safety Analysis of Fuel Storage Under Fuel Assembly Dropping Accident. International Conference on Nuclear Engineering. American Society of Mechanical Engineers. 2022;86366.
- Xiao D, Fan Y, Liu Y, Guo S, Wang H. Impact Simulation Analysis of Spent Fuel Assembly Drop Accident. MEMAT 2022; 2nd International Conference on Mechanical Engineering, Intelligent Manufacturing and Automation Technology. VDE. 2022.
- Kim H.J, Yim J.S, Lee B.H, Oh J.Y, Tahk Y.W. Drop impact analysis of plate-type fuel assembly in research reactor. Nuclear Engineering and Technology. 2014;46(4):529-540.
- Kim H.J, Yim J.S, Tahk Y.W, Oh J.Y, Kong E.H. Drop behaviors of a plate-type fuel assembly used in research reactor for a drop accident. Progress in Nuclear Energy. 2019;113:255-262.
- Handbook A.S.M. ASM Handbook Volume 2: Properties and Selection: Nonferrous Alloys and Special-Purpose Materials. ASM International. 1992.
- Boldyrev I.S, Shchurov I.A, Nikonov A.V. Numerical Simulation of the Aluminum 6061-T6 Cutting and the Effect of the Constitutive Material Model and Failure Criteria on Cutting Forces’ Prediction. Procedia Engineering. 2016;150:866-870.
- Sumesh C.S, Ramesh A. Numerical Modelling and Optimization of Dry Orthogonal Turning of Al6061-T6 Alloy. Periodica Polytechnica Mechanical Engineering. 2018;62(3):196-202.
- Akram S, Jaffery S.H.I, Khan M, Fahad M, Mubashar A, Ali L. Numerical and Experimental Investigation of Johnson-Cook Material models for Aluminum (Al 6061-T6) Alloy Using Orthogonal Machining Approach. Advances in Mechanical Engineering. 2018;10(9):1-14.
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