A CAMAC-based reactivity-meter for nuclear reactors

Ciftcioglu, Ö.; Geçkinli, M.

doi:10.1016/0029-554x(80)90040-3

Cited by 11 publications

(3 citation statements)

References 2 publications

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“…where Λ is the neutron mean generation time, β eff is the effective delayed neutron fraction, and λ i is the decay constant of the delayed neutron precursor group i with concentration C i . Note that both β eff /Λ and C i can be obtained experimentally [6].…”

Section: Iib Controller With Temperature-inferred Reactivity Signalmentioning

confidence: 99%

Hybrid Temperature-Reactivity PID Controllers for Nuclear Thermal Propulsion Startup

Laboure,

Terlizzi,

Schunert

2023

Nuclear and Emerging Technologies for Space (NETS 2023)

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In this work, a novel temperature-reactivity controller is introduced to rotate control drums based on a chamber temperature signal. It consists of two components: (1) a reactivitydriven proportional controller converting the temperature demand into a reactivity signal, and (2) a temperature-driven proportional-derivative controller which relies on a derivative term to anticipate sudden changes in demand and limit temperature overshoot. A weighting function is proposed to continuously transition from one component to the other.

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Section: Iib Controller With Temperature-inferred Reactivity Signalmentioning

confidence: 99%

Hybrid Temperature-Reactivity PID Controllers for Nuclear Thermal Propulsion Startup

Laboure,

Terlizzi,

Schunert

2023

Nuclear and Emerging Technologies for Space (NETS 2023)

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“…Meanwhile, hardware programmed data in FPGA is secure in contrast to software based microcomputer [2] systems. The theoretical model [3], system design [4], and measurements are described in the following sections. Manuscript …”

Section: Introductionmentioning

confidence: 99%

A FPGA based digital reactivity meter for THOR research reactor

Chen

Chou

2013

2013 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and Their Applications (ANIMM

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A field programmable gate array (FPGA) based real-time reactivity-meter for Tsing-Hua Open-Pool Reactor (THOR) has been developed. The reactivity meter can operate online with real time calculation. According to the inverse point reactor dynamics model, reactivity was estimated from the measured power data. In order to improve the accuracy on the estimation, sensitivity studies have been made to determine a proper sample time interval to reduce the fluctuation of the measured power data. Two sets of ADC were used to extend the dynamic range of the monitoring system. Compared with the existing analog system, the digital system has a wider dynamic range, less noise in low power range, and a comparable system response time.

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“…Die Bestimmung der Reaktivität erfolgt aus der gemessenen Neutronendichte durch spezielle Meßgeräte (Reaktivitätsmesser) auf der Grundlage eines inversen Reaktormodells [1], Digital oder analog realisierte Reaktivitätsmesser werden im allgemeinen als autonome Geräte eingesetzt [2,3].…”

Section: Introductionunclassified

Optimale Reaktivitätsschätzung an Kernreaktoren /

Hoppe¹

1992

At - Automatisierungstechnik

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ist wissenschaftlicher Mitarbeiter im Wissenschaftler-Integrations-Programm der Koordinierungs-und Aufbau-Initiative für die Forschung in den neuen Ländern e.V. Hauptarbeitsfeld: Signalerkennung mit Assoziativen Korrelationsmatrizen. Adresse: KAI-e.V./WIP im Forschungszentrum Rossendorf. Postfach 19, 0-8051 Dresden. Tel. (0351) 591-3469. Die reaktorinterne Größe Reaktivität soll mit kleinstem mittleren Fehlerquadrat geschätzt werden. Das nichtlineare Reaktormodell wird dazu durch ein inverses Modell erweitert. Es geht dadurch in ein stark reduziertes lineares Prozeßmodell über. Im Gegensatz zu einer Linearisierung entsteht dabei kein Verlust an relevanter Information. Deshalb kann nach der linearen Theorie ein Reaktivitätsschätzer entworfen werden, der im gesamten Gültigkeitsbereich des nichtlinearen Reaktormodells anwendbar ist.Reactivity as an internal quantity of a nuclear reactor shall to be estimated whit least mean square error. The nonlinear reactor model is therefore extended by an inverse model. It is so transformed into a significantly reduced process model. Relevant information is not lost contrary to linearisation. One can design an optimal reactivity estimator, which is practicable in the whole range of validity of the nonlinear reactor model, by means of linear theory.

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A CAMAC-based reactivity-meter for nuclear reactors

Cited by 11 publications

References 2 publications

Hybrid Temperature-Reactivity PID Controllers for Nuclear Thermal Propulsion Startup

Hybrid Temperature-Reactivity PID Controllers for Nuclear Thermal Propulsion Startup

A FPGA based digital reactivity meter for THOR research reactor

Optimale Reaktivitätsschätzung an Kernreaktoren /

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