Nuclear Engineering and Technology

  • 제56권6호
  • /
  • Pages.2388-2394
  • /
  • 2024
  • /
  • 1738-5733(pISSN)
  • /
  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
권호 표지
DOI QR코드

DOI QR Code

Geometrical shape and self-shielding effect of burnable poison particles on pin-in block type HTGR neutronic performance

  • Jamiyansuren Terbish (Nuclear Research Center, National University of Mongolia) ;
  • Odmaa Sambuu (Nuclear Research Center, National University of Mongolia)
  • 투고 : 2023.12.27
  • 심사 : 2024.01.30
  • 발행 : 2024.06.25
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In our previous works, two different spherical burnable poison particles (BPPs) as B4C and Gd2O3 in pin-in block type HTGR core had utilized to suppress the excess reactivity and to control long-term reactivity during the burnup period. In the present work, we performed the neutronic analysis of a prismatic HTGR operating at 850 ℃ with thermal power of 100 MW containing spherical and cylindrical BPPs and then studied the self-shielding effect of BPPs and shape effect. The calculations were performed when the surface area (1) or volume (2) of cylindrical BPPs equals to that of the spherical BPPs. The calculations showed that the neutronic parameters were slightly better for the second case than the first one, such as the excess reactivity of the reactor core at the beginning of the cycle were more suppressed, the core lifetime were more extended, and the fuel-burning were more efficiently. The neutron spectrum in each region of the cylindrical BBPs slightly differs than that of the spherical BPPs. Therefore, the self-shielding effect of BPPs on reactor core performance depends on the particle's geometrical shape.

키워드

과제정보

This work was supported by the National University of Mongolia under grant number P2023-4611. We appreciate the MINATO cluster server computers at the Nuclear Research Center, National University of Mongolia for giving opportunity to perform all neutronic calculations.

참고문헌

  1. James J. Duderstadt, Louis J. Hamilton. Nuclear Reactor Analysis. 
  2. Toru Obara, Taiki Onoe, Effect of Particle Type Burnable Poisons in HTGR, Transaction of the American Nuclear Society, 2012, pp. 1023-1024, 107. 01.
  3. Toru Obara, Taiki Onoe, Flattening of burnup reactivity in long-life prismatic HTGR by particle type burnable poisons, Ann. Nucl. Energy 57 (2013) 216-220. 
  4. S. Odmaa, T. Obara, Neutronic and thermo-hydraulic analysis of a small, long-life HTGR for passive decay heat removal, J. Nucl. Sci. Technol. 52 (Issue 12) (2015) 1519-1529. 
  5. Odmaa Sambuu, Jamiyansuren Terbish, Burnable poison optimized on a long-life, HTGR core, Nucl. Eng. Technol. 54 (2022) 3106-3116. 
  6. Hugo van Dam, Long-term control of excess reactivity by burnable particles, Ann. Nucl. Energy 27 (2000) 733-743. 
  7. J.L. Kloosterman, H. van Dam, T.H.J.J. van der Hagen, Applying burnable poison particles to reduce the reactivity swing in the high temperature reactors with batch-wise fuel loading, Nucl. Eng. Des. 222 (2003) 105-115. 
  8. Т. Jamiyansuren, S. Odmaa, The effect of shape of the burnable poison particles on prismatic HTGR core, Scientific Transaction of the National University of Mongolia N◦31 (536) (2020) 77-83. In Mongolian. 
  9. Y. Nagaya, et al., MVP/GMVP II: General-Purpose Monte Carlo Code for Neutron and Photon Transport Calculations Based on Continuous Energy and Multigroup Methods. JAERI-1348, Japan Atomic Energy Research Institute, Japan, 2005. 
  10. K. Okumura, et al., MVP-BURN User's Manual, Atomic Energy Agency, Japan, 2005. 
  11. Go Chiba, Keisuke Okumura, Kazuteru Sugino, Yasunobu Nagaya, Kenji Yokoyama, Teruhiko Kugo, Makoto Ishikawa and Shigeaki Okajima. JENDL-4.0 benchmarking for fission reactor applications. J. Nucl. Sci. Technol., Vol. 48, No 2. p.172-182. 
  12. John R. Lamarsh, Anthony J. Baratta. Introduction to Nuclear Engineering.