Monte Carlo studies on the burnup measurement for the high temperature gas cooling reactor

  • Online fuel pebble burnup measurement in a future high temperature gas cooling reactor is proposed for implementation through a high purity germanium (HPGe) gamma spectrometer. By using KORIGEN software and MCNP Monte Carlo simulations,the single pebble gamma radiations to be recorded in the detector are simulated under different irradiation histories. A specially developed algorithm is applied to analyze the generated spectra to reconstruct the gamma activity of the 137Cs monitoring nuclide. It is demonstrated that by taking into account the intense interfering peaks,the 137Cs activity in the spent pebbles can be derived with a standard deviation of 3.0%(1σ). The results support the feasibility of utilizing the HPGe spectrometry in the online determination of the pebble burnup in future modular pebble bed reactors.
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  • [1] IAEA TECDOC. Draft of Collaboration Research Project 6,Adances in HTGR 269 Fuel Technology,2011[2] Hawari A I,CHEN J. IEEE Transactions on Nuclear Science,2002,49(3): 1249[3] SU B,ZHAO Z,CHEN J,Ayman I. Hawari,Prog. Nucl. Ener.,2006,48: 686[4] Matsson I,Grapengiessen B. Appl. Radiat. Isot.,1997,48(10-12): 1289-1298[5] Terremoto L A A,Zeituni C A et al. Nucl. Instrum. Methods A,2000,450: 495[6] Ansari S A,Asif M et al. Annals of Nuclear Energy,2007,34: 641[7] Willman C,Hakansson A et al. Annals of Nuclear Energy,2006,33: 427[8] ZHANG L G,LI T S et al. Nuclear Power Engineering,2008,29: 018 (in Chinese)[9] Hawari A I,CHEN J. IEEE Transactions on Nuclear Science,V,2005,52(5): 1659[10] CHEN J,Hawari A I,ZHAO Z,SU B. Nucl. Instrum. Methods A,2003,505: 393[11] ZHANG L G,SHANG R C. Nuclear Power Engineering,2009,30: 043 (in Chinese)[12] YAN W H,ZHANG L G,ZHANG Z,XIAO Z G. CPC (HEP NP),2012,36(11): 1082[13] YAN W H,ZHANG L G,ZHANG Z,XIAO Z G. Nucl. Instrum. Methods A,2013,712: 130[14] Matsson I. ORIGEN2 Simulations of Spent BWR Fuel with Different Burnup,Power History and Initial Enrichment. SKI Report,1995,95: 46[15] Fischer U,Wiese H W. Verbesserte Konsistente Berechnung des Nuklearen Inventars Abgebrannter DWR-Brennstoffe auf der Basis von Zell-Abbrand-Verfahren mit KORIGEN. Institut f#369;r Neutronenphysik und Reaktortechnik Projekt Wiederaufarbeitung und Abfallbehandlung,KfK3014,PWA 76/82,1983[16] Briesmeister J FEd. MCNP-A general Monte Carlo N-Particle Transport Code,-version 4B,Report LA-12625. Los Alamos National Laboratory,Los Alamos,1997[17] ZHANG L G,LIU Y,XIAO Z G. Nuclear Electronics Detection Technology,2010,30: 1135 (in Chinese)
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YAN Wei-Hua, ZHANG Li-Guo, ZHANG Yan, ZHANG Zhao and XIAO Zhi-Gang. Monte Carlo studies on the burnup measurement for the high temperature gas cooling reactor[J]. Chinese Physics C, 2013, 37(11): 116201. doi: 10.1088/1674-1137/37/11/116201
YAN Wei-Hua, ZHANG Li-Guo, ZHANG Yan, ZHANG Zhao and XIAO Zhi-Gang. Monte Carlo studies on the burnup measurement for the high temperature gas cooling reactor[J]. Chinese Physics C, 2013, 37(11): 116201.  doi: 10.1088/1674-1137/37/11/116201 shu
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Received: 2013-01-07
Revised: 1900-01-01
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Monte Carlo studies on the burnup measurement for the high temperature gas cooling reactor

    Corresponding author: YAN Wei-Hua,
    Corresponding author: XIAO Zhi-Gang,

Abstract: Online fuel pebble burnup measurement in a future high temperature gas cooling reactor is proposed for implementation through a high purity germanium (HPGe) gamma spectrometer. By using KORIGEN software and MCNP Monte Carlo simulations,the single pebble gamma radiations to be recorded in the detector are simulated under different irradiation histories. A specially developed algorithm is applied to analyze the generated spectra to reconstruct the gamma activity of the 137Cs monitoring nuclide. It is demonstrated that by taking into account the intense interfering peaks,the 137Cs activity in the spent pebbles can be derived with a standard deviation of 3.0%(1σ). The results support the feasibility of utilizing the HPGe spectrometry in the online determination of the pebble burnup in future modular pebble bed reactors.

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