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A Comparison Between the Results of Perturbation Theory and TRIGAP for the Reactivity Worth Calculations of Fuel Elements
Istanbul Technical University, Nuclear Energy Institute.
Istanbul Technical University, Nuclear Energy Institute.ORCID iD: 0000-0002-7431-5115
Istanbul Technical University, Nuclear Energy Institute.
1998 (English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100, Vol. 25, no 14, p. 1133-1140Article in journal (Refereed) Published
Abstract [en]

Reactivity worth of the fuel elements of I.T.U. TRIGA MARK-IIreactor are calculated by using both one-group perturbation theory and a one dimensional, two-group diffusion computer code, TRIGAP. Results of both methods are compared with those measured experimentally. Although the perturbation theory is obtained from the diffusion theory by making some assumptions, it is seen that one-group perturbation theory gives the results with better accuracy in comparison to the results of TRIGAP. This situation shows that TRIGAP cannot reflect the effect of local material changes on the multiplication factor well enough. In order to calculate fuel elements reactivity worth of TRIGA type reactors, one-group perturbation theory can be preferred to TRIGAP due to its simplicity and accuracy, when the flux and group constants are known.

Place, publisher, year, edition, pages
1998. Vol. 25, no 14, p. 1133-1140
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URN: urn:nbn:se:uu:diva-380326OAI: oai:DiVA.org:uu-380326DiVA, id: diva2:1299258
Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-03-26

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