Calibration of Thermal Power in the 3 MW TRIGA MARK II Research Reactor and Validation under Forced Convection Cooling
DOI:
https://doi.org/10.47981/j.mijst.14(01)2026.566(141-150)Keywords:
BTRR, Thermal power calibration, Calorimetric Method, Heat Balance Method, Heat Loss CalculationAbstract
Neutronic instruments are commonly used by reactor operators to monitor reactor power; however, thermal methods remain the standard for calibrating reactor power during routine operation. This paper presents the results of thermal power calibration for the 3 MW TRIGA MARK II research reactor, comparing two heat transfer approaches: the calorimetric method and the heat balance method. Calibration data were validated under forced convection cooling conditions. The calorimetric method was applied at a low power level of 100 kW, yielding a thermal power measurement of 98 kW, closely matching the reactor’s design specifications. The heat balance method was employed at higher power levels of 1 MW, 1.5 MW, and 2 MW, based on measurements of inlet and outlet coolant temperatures and water flow rate in the primary cooling loop. The thermal power values obtained were 831.5 kW, 1293.5 kW, and 1755.4 kW, respectively. Deviations were mainly attributed to limitations in analog instrumentation, fluctuations in mass flow rate, and measurement uncertainties. Comparison of the two methods indicated that the calorimetric method provided more accurate and reliable power calibrations, whereas the heat balance method exhibited greater discrepancies. Overall, the findings underscore the suitability of the calorimetric method for precise thermal power calibration of TRIGA MARK II reactors.
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Agbo, S. A., Ahmed, Y. A., Ewa, I. O. B., & Jibrin, Y. (2016). Analysis of Nigeria Research Reactor-1 thermal power calibration methods. Nuclear Engineering and Technology, 48(3), 673–683. https://doi.org/10.1016/j.net.2016.01.014
Basuki, T., Siregar, A. R., & Widodo, H. S. (2023). Thermal power calibration of the TRIGA-2000 reactor using calorimetric measurements. Progress in Nuclear Energy, 157.
Cammi, A., Lorenzi, S., & Ricotti, E. (2015). Multiphysics modeling and experimental validation of the TRIGA Mark II reactor. Annals of Nuclear Energy, 84, 148–157.
Callen, R. C., & Allgeier, H. J. (1968). Thermal power calibration of the Enrico Fermi reactor (APDA-NTS-16). Atomic Power Development Associates, Inc. https://doi.org/10.2172/4545285
Dewan, M. J., Haque, A., Huq, M. F., Salam, M. A., & Kabir, K. A. (2016). Thermal power calibration and correlation of reactor tank constant with pool water level of TRIGA Mark-II research reactor. Dhaka University Journal of Applied Science and Engineering (DUJASE), 3(2), 189–193.
Dewan, M. R., Salam, M. A., & Mannan, M. A. (2016). Determination of reactor tank constant for calorimetric power calibration of the BAEC TRIGA Mark II research reactor. Nuclear Engineering and Design, 305, 476–483.
GA Technologies. (1984). TRIGA Mark-II reactor mechanical operation and maintenance manual (GA Project 2299, GA-A 17054). GA Technologies.
Haque, M. M., Soner, M. A. M., Saha, P. K., Salam, M. A., & Zulquarnain, M. A. (2007). Operating experience and utilization programmes of the BAEC 3 MW TRIGA Mark-II research reactor of Bangladesh. International Conference on Research Reactors: Safe Management and Effective Utilization, Sydney, Australia. International Atomic Energy Agency.
Holman, J. P. (1998). Experimental methods for engineers (7th Ed.). McGraw-Hill.
Lanning, D. D., Lipsett, J. J., & Long, E. (1960). The physics characteristics of the General Atomics TRIGA reactor. Nuclear Engineering and Design, 2(3), 265–273. https://doi.org/10.1016/0029-5493(60)90039-4
Lee, D., Kim, H., & Park, J. (2020). Uncertainty analysis of calorimetric power calibration in open-pool research reactors using CFD modeling. Annals of Nuclear Energy, 145.
Mesquita, A. Z., Rezende, H. C., & Souza, R. M. G. P. (2011). Thermal power calibrations of the IPR-R1 TRIGA reactor by the calorimetric and the heat balance methods. Progress in Nuclear Energy, 53(8), 1197–1203. https://doi.org/10.1016/j.pnucene.2011.08.003
Riede, U., & Böck, H. (2013). Operational experience and experimental characterization of the TRIGA Mark II reactor. Nuclear Engineering and Design, 265, 104–112.
Salam, M. A., Haque, A., Uddin, M. M., Shohag, M. B., & Soner, M. A. M. (2016). Thermal power calibration and error minimization of 3 MW TRIGA Mark-II research reactor. International Journal of Scientific & Engineering Research, 7(5).
Salam, M. A., Hossain, M. S., Islam, M. A., & Mannan, M. A. (2016). Thermal power calibration of the BAEC TRIGA Mark II research reactor using calorimetric method. Annals of Nuclear Energy, 94, 245–252.
Simnad, M. T., Foushee, F. C., & West, G. B. (1976). Fuel elements for pulsed TRIGA® research reactors. Nuclear Technology, 28(1), 31–56.
Štancar, Ž., & Snoj, L. (2017). An improved thermal power calibration method at the TRIGA Mark II research reactor. Nuclear Engineering and Design, 325, 78–89. https://doi.org/10.1016/j.nucengdes.2017.10.007
Silva, T. F., Mesquita, A. Z., & Pereira, C. (2024). Experimental thermal-hydraulic monitoring and power validation of the IPR-R1 TRIGA reactor. Annals of Nuclear Energy, 185.
Zagar, T., Ravnik, M., & Persic, A. (1999). Analysis of reactor thermal power calibration method. In Proceedings of the International Conference Nuclear Energy in Central Europe’99 (pp. 91–98). Portorož, Slovenia.
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Data Availability Statement
Datasets generated during the current study are available from the corresponding author upon reasonable request.
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Copyright (c) 2026 MD SHAMIM HASSAN, K.M. Rakib Al Hasan, Md. Rezouanul Kabir Hridoy, Mohammed Sarim Salman karim, Md. Ashiqur Rahman Alif , Md. Altab Hossain, Ashraful Haque
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