Nuclear Engineering and Technology

  • 제49권1호
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  • Pages.1-5
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  • 2017
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Investigating Heavy Water Zero Power Reactors with a New Core Configuration Based on Experiment and Calculation Results

  • Nasrazadani, Zahra (Reactor Research School, Nuclear Science and Technology Research Institute, Atomic Energy Organization of Iran) ;
  • Salimi, Raana (Reactor Research School, Nuclear Science and Technology Research Institute, Atomic Energy Organization of Iran) ;
  • Askari, Afrooz (Reactor Research School, Nuclear Science and Technology Research Institute, Atomic Energy Organization of Iran) ;
  • Khorsandi, Jamshid (Reactor Research School, Nuclear Science and Technology Research Institute, Atomic Energy Organization of Iran) ;
  • Mirvakili, Mohammad (Reactor Research School, Nuclear Science and Technology Research Institute, Atomic Energy Organization of Iran) ;
  • Mashayekh, Mohammad (Reactor Research School, Nuclear Science and Technology Research Institute, Atomic Energy Organization of Iran)
  • 투고 : 2015.12.20
  • 심사 : 2016.07.01
  • 발행 : 2017.02.25
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초록

The heavy water zero power reactor (HWZPR), which is a critical assembly with a maximum power of 100 W, can be used in different lattice pitches. The last change of core configuration was from a lattice pitch of 18-20 cm. Based on regulations, prior to the first operation of the reactor, a new core was simulated with MCNP (Monte Carlo N-Particle)-4C and WIMS (Winfrith Improved Multigroup Scheme)-CITATON codes. To investigate the criticality of this core, the effective multiplication factor ($K_{eff}$) versus heavy water level, and the critical water level were calculated. Then, for safety considerations, the reactivity worth of $D_2O$, the reactivity worth of safety and control rods, and temperature reactivity coefficients for the fuel and the moderator, were calculated. The results show that the relevant criteria in the safety analysis report were satisfied in the new core. Therefore, with the permission of the reactor safety committee, the first criticality operation was conducted, and important physical parameters were measured experimentally. The results were compared with the corresponding values in the original core.

키워드

참고문헌

  1. China Institute of Atomic Energy, Preliminary Safety Analysis Report on Heavy Water Zero Power Reactor, Internal Report, 1992.
  2. J.F. Briesmeister, MCNP A General Monte Carlo N-Particle Transport Code System (version C), Los Alamos National Laboratory, Los Alamos (NM), 2000.
  3. M.J. Halsall, A Summary of WIMSD4 Input Options, 1967.
  4. M.J. Roth, The preparation of input data for WIMSD4, General Reactor Physics Division, Atomic Energy Establishment, 1967.
  5. National Energy Software Center Note, CITATION, NESC No. 387, July 1980
  6. A. Moosakhani, M.N. Nasrabadi, B. Teimuri, Monte Carlo calculation of the core of the heavy water zero power reactor (HWZPR), using MCNP4C, Nucl. Eng. Des. 241 (2011) 1459-1462. https://doi.org/10.1016/j.nucengdes.2011.02.005
  7. J. Khorsandi, Z. Nasr, R. Salimi, M. Adavoodi, H. Khalafi, Heavy water zero power reactor (HWZPR) mixed core, first criticality, calculation and experiment, Prog. Nucl. Energy 85C (2015) 613-616.
  8. China Institute of Atomic Energy, HWZPR Safe Operation Manual, Internal Report, 1992.