Inverse kinetics method with source term for subcriticality measurements during criticality approach in the IPEN/MB-01 research reactor
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2009
Autores IPEN
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INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st
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In reactor physics tests which are performed at the startup after refueling the commercial PWRs, it is important
to monitor subcriticality continuously during criticality approach. Reactivity measurements by the inverse
kinetics method are widely used during the operation of a nuclear reactor and it is possible to perform an online
reactivity measurement based on the point reactor kinetics equations. This technique is successful applied at
sufficiently high power level or to a core without an external neutron source where the neutron source term in
point reactor kinetics equations may be neglected. For operation at low power levels, the contribution of the
neutron source must be taken into account and this implies the knowledge of a quantity proportional to the
source strength, and then it should be determined. Some experiments have been performed in the IPEN/MB-01
Research Reactor for the determination of the Source Term, using the Least Square Inverse Kinetics Method
(LSIKM). A digital reactivity meter which neglects the source term is used to calculate the reactivity and then
the source term can be determined by the LSIKM. After determining the source term, its value can be added to
the algorithm and the reactivity can be determined again, considering the source term. The new digital reactivity
meter can be used now to monitor reactivity during the criticality approach and the measured value for the
reactivity is more precise than the meter which neglects the source term.
Como referenciar
LOUREIRO, CESAR A.D.; SANTOS, ADIMIR dos. Inverse kinetics method with source term for subcriticality measurements during criticality approach in the IPEN/MB-01 research reactor. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st, September 27 - October 2, 2009, Rio de Janeiro, RJ. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/16635. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.