Fission Product Model for BWR Analysis with Improved Accuracy in High Burnup.

• IKEHARA Tadashi

  Isogo Nuclear Engineering Center, Toshiba Corporation

• ANDO Yoshihira

  Nuclear Engineering Laboratory, Toshiba Corporation

• YAMAMOTO Munenari

  Isogo Nuclear Engineering Center, Toshiba Corporation

Bibliographic Information

Other Title

• Fission Product Model for BWR Analysis

Abstract

A new fission product (FP) chain model has been studied to be used in a BWR lattice calculation. In attempting to establish the model, two requirements, i.e. the accuracy in predicting burnup reactivity and the easiness in practical application, are simultaneously considered. The resultant FP model consists of 81 explicit FP nuclides and two lumped pseudo nuclides having the absorption cross sections independent of burnup history and fuel composition. For the verification, extensive numerical tests covering over a wide range of operational conditions and fuel compositions have been carried out. The results indicate that the estimated errors in burnup reactivity are within 0.1%Δk for exposures up to 100GWd/t. It is concluded that the present model can offer a high degree of accuracy for FP representation in BWR lattice calculation.

Journal

• Journal of Nuclear Science and Technology

  Journal of Nuclear Science and Technology 35 (8), 527-537, 1998

  Atomic Energy Society of Japan

Keywords

• fission products
• fission product model
• pseudo fission products
• BWR type reactors
• BWR lattice calculation
• burnup calculation

Details

• CRID: 1390282679071571584
• NII Article ID: 10002079821
• NII Book ID: AA00703720
• DOI: 10.3327/jnst.35.527
• COI: 1:CAS:528:DyaK1cXmsVegsrY%3D
• ISSN: 18811248
• ISSN: 00223131
• NDL BIB ID: 4541359
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4541359
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed