Stability analysis of the Ghana Research Reactor-1 (GHARR-1)
2013 (English)In: Energy Conversion and Management, ISSN 0196-8904, Vol. 74, 587-593 p.Article in journal (Refereed) Published
A theoretical model has been developed to study the stability of the Ghana Research Reactor one(GHARR-1). The closed-loop transfer function of GHARR-1 was established based on the model, which involved the neutronics and the thermal hydraulics transfer functions. The reactor kinetics was described by the point kinetics model for a single group of delayed neutrons, whilst the thermal hydraulics transfer function was based on the modiﬁed lumped parameter concept. The inherent internal feedback effect due to the fuel and the coolant was represented by the fuel temperature coefﬁcient and the moderator temperature coefﬁcient respectively. A computer code, RESA (REactor Stability Analysis), entirely in Java was developed based on the model for systems analysis. Stability analysis of the open-loop transfer function of GHARR-1 based on the Nyquist criterion and Bode diagrams using RESA, has shown that the closed loop transfer function was marginally stable for variable operating power levels. The relative stability margins of GHARR-1 were also identiﬁed.
Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 74, 587-593 p.
Nyquist criterion, Bode plots, Transfer function, RESA, Lumped parameter concept
Other Physics Topics
Research subject Applied Nuclear Physics
IdentifiersURN: urn:nbn:se:uu:diva-208444DOI: 10.1016/j.enconman.2013.03.039ISI: 000325302700063OAI: oai:DiVA.org:uu-208444DiVA: diva2:652762