Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2014, Vol. 25 ›› Issue (S1): S010601 doi: 10.13538/j.1001-8042/nst.25.S010601

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Development of three dimensional discrete ordinates-Monte Carlo coupled system

HAN Jing-Ru, LIU Qiao-Feng, CHEN Hai-Ying, and ZHANG Chun-Ming   

  1. Nuclear and Radiation Safety Center of Ministry of Environmental Protection, Beijing 100082,China
  • Contact: HAN Jing-Ru E-mail:hanjingru@163.com
  • Supported by:

    Supported by CAP1400 Safety Evaluation Technology and Independent
    Verification Test of Ministry of Science and Technology Major Projects
    (2011ZX06002-010), CAP1400 Safety Review Key Technology Study of
    Ministry of Science and Technology Major Projects (2013ZX06002001)

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HAN Jing-Ru, LIU Qiao-Feng, CHEN Hai-Ying, and ZHANG Chun-Ming. Development of three dimensional discrete ordinates-Monte Carlo coupled system.Nuclear Science and Techniques, 2014, 25(S1): S010601     doi: 10.13538/j.1001-8042/nst.25.S010601

Abstract:

The radiation shielding calculations of large nuclear facilities are complicated due to their bulk shields and
complex geometries. A program system based on three-dimensional discrete ordinates (SN)-Monte Carlo (MC)
coupled method has been developed to solve this kind of shielding problems. SN method is used to treat the deep
penetration problem in the bulk shield, and MC simulation is performed with complex geometry. The coupled
method is implemented in the interface program to calculate the probability of particle variables from the SN
angular flux distribution. A special source routine is written and linked to MC code to processed these probability
arrays and sample the particle variables to generate source for the use of MC code. The H.B.Robinson Unit 2
pressure vessel benchmark was used to validate the SN-MC coupled program system. The specific activities for
the six dosimeters in the surveillance capsule were calculated. Satisfactory agreements were obtained from the
comparisons of SN-MC results with those obtained from measurement and other computer codes. The result
demonstrates that the SN-MC coupling scheme with the program system is suitable to treat three dimensional
shielding problems with satisfactory accuracy.

Key words: Discrete ordinates, Monte Carlo, Coupled, Benchmark validation, Shielding