BWR local peaking factor calculation using the linear reactivity model

Gustave Alonso, Edmundo Del Valle, Arturo Delfïn

Research output: Contribution to conferencePaper

Abstract

In absence of burnable absorbers the reactivity produced by a BWR fuel assembly behaves in a linear manner from here its name. In particular for U-235 enrichments above 2 w/0 [2], it happens in that way. To obtain longer energy cycles is necessary to increase the U-235 enrichment in the fuel assembly along with the use of Gadolinium to avoid pin peaking factor that could damage the integrity of the BWR fuel assembly. Use of this burnable absorber penalizes the reactivity of the fuel assembly, however it disappears generally after its first cycle of operation. In this work, we proposed the use of a five-block mesh-centered finite difference scheme based on a nodal formulation as a way to obtain accurate predictions of local peaking factor using the linear reactivity model along with the penalization given by the use of gadolinium. With these ideas we constructed a computer program called RHOMC-B (Reactivity based High Order Multicycle analysis for BWRs), this program considers the use of a third order nodal formulation relating assembly power and reactivity, and it also incorporates the reactivity penalty given by the use of gadolinium as a fuel assembly burnable absorber.
Original languageAmerican English
Pages145
Number of pages1
StatePublished - 1 Dec 2004
EventAbstracts of the Pacific Basin Nuclear Conference -
Duration: 1 Dec 2004 → …

Conference

ConferenceAbstracts of the Pacific Basin Nuclear Conference
Period1/12/04 → …

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Gadolinium
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Alonso, G., Del Valle, E., & Delfïn, A. (2004). BWR local peaking factor calculation using the linear reactivity model. 145. Paper presented at Abstracts of the Pacific Basin Nuclear Conference, .
Alonso, Gustave ; Del Valle, Edmundo ; Delfïn, Arturo. / BWR local peaking factor calculation using the linear reactivity model. Paper presented at Abstracts of the Pacific Basin Nuclear Conference, .1 p.
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Alonso, G, Del Valle, E & Delfïn, A 2004, 'BWR local peaking factor calculation using the linear reactivity model', Paper presented at Abstracts of the Pacific Basin Nuclear Conference, 1/12/04 pp. 145.

BWR local peaking factor calculation using the linear reactivity model. / Alonso, Gustave; Del Valle, Edmundo; Delfïn, Arturo.

2004. 145 Paper presented at Abstracts of the Pacific Basin Nuclear Conference, .

Research output: Contribution to conferencePaper

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AU - Alonso, Gustave

AU - Del Valle, Edmundo

AU - Delfïn, Arturo

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Alonso G, Del Valle E, Delfïn A. BWR local peaking factor calculation using the linear reactivity model. 2004. Paper presented at Abstracts of the Pacific Basin Nuclear Conference, .