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Nuclear plant safety evaluation system

Herbst, J.J. ; Sider, R.G. ; Jaquith, R.E. ; Meijer, C.H.

United States 1986

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Título:
Nuclear plant safety evaluation system
Autor: Herbst, J.J. ; Sider, R.G. ; Jaquith, R.E. ; Meijer, C.H.
Assuntos: 220900 - Nuclear Reactor Technology- Reactor Safety ; ACCIDENTS ; AFTER-HEAT REMOVAL ; COMPUTER GRAPHICS ; COMPUTERIZED SIMULATION ; CONSOLES ; CONTROL ; CONTROL ROOMS ; COOLANTS ; COOLING SYSTEMS ; DAMAGE ; DATA BASE MANAGEMENT ; ENERGY SYSTEMS ; EQUATIONS ; FAILURES ; GENERAL STUDIES OF NUCLEAR REACTORS ; MANAGEMENT ; MEMORY DEVICES ; NUCLEAR FACILITIES ; NUCLEAR POWER PLANTS ; POWER PLANTS ; PRESSURE CONTROL ; PROBABILITY ; REACTOR ACCIDENTS ; REACTOR COMPONENTS ; REACTOR COOLING SYSTEMS ; REACTOR CORE DISRUPTION ; REACTOR CORES ; REACTOR SAFETY ; REACTOR SHUTDOWN ; REMOVAL ; RISK ASSESSMENT ; SAFETY ; SHUTDOWNS ; SIGNALS ; SIMULATION ; THERMAL POWER PLANTS
Descrição: This patent describes a nuclear power plant having a reactor core, a multiplicity of plant components for providing reactor safety functions including reactor shutdown, reactor coolant inventory control, reactor coolant pressure control, reactor core heat removal, and reactor coolant heat removal. It also has a plant control room including means for generating a status signal indicative of the availability of at least some of the components. An improved safety evaluation system is described comprising: means for storing a plant-specific data base including component level core damage logic paths and the failure probability of each component, the logic paths being in the form of constituent cutsets. Each of the cutsets consists of a representation of an initiating event and the necessary component failures that would prevent an adequate plant response to avoid core damage; means for selecting plant condition scenarios by modifying at least one of the component failure probabilities to represent plant components actually or potentially unavailable; means responsive to the means for storing a plant-specific data base and the means for selecting plant condition scenarios, for associating a risk figure of merit with the change in the core damage occurrence rate resulting from the unavailable components. The means for associating a risk figure of merit includes a computer implemented program for determining the core damage occurrence rate.
Editor: United States
Data de criação/publicação: 1986
Idioma: Inglês

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Nuclear plant safety evaluation system

Herbst, J.J. ; Sider, R.G. ; Jaquith, R.E. ; Meijer, C.H.

United States 1986

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