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http://dx.doi.org/10.5855/ENERGY.2016.25.4.124

An Experimental Study on Flow Distributor Performance with Single-Train Passive Safety System of SMART-ITL  

Ryu, Sung Uk (Korea Atomic Energy Research Institute)
Bae, Hwang (Korea Atomic Energy Research Institute)
Yang, Jin Hwa (Korea Atomic Energy Research Institute)
Jeon, Byong Guk (Korea Atomic Energy Research Institute)
Yun, Eun Koo (Korea Atomic Energy Research Institute)
Kim, Jaemin (Korea Atomic Energy Research Institute)
Bang, Yoon Gon (Korea Atomic Energy Research Institute)
Kim, Myung Joon (Korea Atomic Energy Research Institute)
Yi, Sung-Jae (Korea Atomic Energy Research Institute)
Park, Hyun-Sik (Korea Atomic Energy Research Institute)
Publication Information
Journal of Energy Engineering / v.25, no.4, 2016 , pp. 124-132 More about this Journal
Abstract
In order to estimate the effect of flow distributors connected to an upper nozzle of CMT(Core Makeup Tank) on the thermal-hydraulic characteristics in the tank, a simplified 2 inch Small Break Loss of Coolant Accident(SBLOCA) was simulated by skipping the decay power and Passive Residual Heat Removal System(PRHRS) actuation. The CMT is a part of safety injection systems in the SMART (System Integrated Modular Advanced Reactor). Each test was performed with reliable boundary conditions. It means that the pressure distribution is provided with repeatable and reproducible behavior during SBLOCA simulations. The maximum flow rates were achieved at around 350 seconds after the initial opening of the isolation valve installed in CMT. After a short period of decreased flow rate, it attained a steady injection flow rate after about 1,250 seconds. This unstable injection period of the CMT coolant is due to the condensation of steam injected into the upper part of CMT. The steady injection flow rate was about 8.4% higher with B-type distributor than that with A-type distributor. The gravity injection during hot condition tests were in good agreement with that during cold condition tests except for the early stages.
Keywords
SMART; Flow distributor; CMT; SBLOCA; Passive Safety Injection System;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Zee, S. K., Design Report for SMART Reactor System Development, KAERI/TR-2846/2007, KAERI, Taejon, 2007.
2 Kim, S. H., Kim, K. K., Yeo, J. W., Chang, M. H., Zee, S. Q., 2002, "Design Development and Verification of a System Integrated Modular PWR," in: Proceedings of 4th International Conference on Nuclear Option in Countries with Small and Medium Electricity Grids, Croatia, June.
3 Kim, K. K., Lee, W. J., Choi, S., Kim, H. R., Ha, J. J., 2014, "The First Licensed Advanced Integral Reactor," Journal of Energy and Power Engineering, Vol. 8, pp. 94-102.
4 Vikas, A. K., Nayak, M., DHIMAN, P. P., KULKARNI, P. K., VIJAYAN, K. K., 2013, "Role of Passive Safety Features in Prevention and Mitigation of Severe Plant Conditions in Indian Advanced Heavy Water Reactor," Nuclear Engineering and Technology, Vol. 45, pp. 625-636.   DOI
5 Yi, S. J., Park, H. S., Song, C. H., 2016, "PX-An Innovative Safety Concept for an Unmanned Reactor," Nuclear Engineering and Technology, Vol. 48, pp. 268-273.   DOI
6 Subhash C. C,. 2015, "Safety aspects of intermediate heat transport and decay heat removal systems of sodium-cooled fast reactors," Vol. 47, pp. 260-266.   DOI
7 Tuunanen, J., Vihavainen, J., D'Auria, F., Kimber, G., 1999, Assessment of Passive Safety Injection Systems of ALWRs, Final report of the European Commission 4 th Framework Programme.
8 Tuunanen, J., Riikonen, V., Kouhia, J., Vihavainen, J., 1998, "Analyses of PACTEL Passive Safety Injection Experiments GDE-21 through GDE-25," Nucl. Eng. Des., Vol. 180, pp. 67-91.   DOI
9 Zejun, X., Wenbin, Z., Hua, Z., Bingde, C., Guifang, Z., Dounan, J., 2003, "Experimental Research Progress on Passive Safety Systems of Chinese Advanced PWR," Nucl. Eng. Des., Vol. 225, pp. 305-313.   DOI
10 Sibamoto, Y., 2006, Summary on Natural Circulation Phenomena Observed in ROSA-AP600 Test, IAEA-TECDOC-1677, pp. 286-298.
11 Bae, H., Kim, D. E., Ryu, S. U., Shin, Y. C., Ko, Y. J., Yi, S. J., Park, H. S., Cho, Y. S., Suh, J. S., 2014, "An SBLOCA Test of Safety Injection Line Break with the SMART-ITL Facility and its MARS-KS Code Simulation," ICAPP 2014 Charlotte, USA, April 6-9.
12 Park, H. S., Yi, S. J., Song, C. H., 2013, "SMR Accident Simulation in Experimental Test Loop," Nuclear Engineering International, pp. 12-15.