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Probabilistic characterization of AHWR Inner Containment using High Dimensional Model Representation
Published in
2009
Volume: 239
   
Issue: 6
Pages: 1030 - 1041
Abstract
In this paper, uncertainty analysis of Advanced Heavy Water Reactor (AHWR) subjected to an accidental pressure is carried out using a computational tool based on High Dimensional Model Representation (HDMR) that facilitates lower dimensional approximation of the original high dimensional implicit limit state/performance function. The method involves response surface generation of HDMR component functions, and Monte Carlo Simulation. HDMR is a general set of quantitative model assessment and analysis tools for capturing the high dimensional relationships between sets of input and output model variables. It is a very efficient formulation of the system response, if higher order variable correlations are weak, allowing the physical model to be captured by the first few lower order terms. Once the approximate form of the original implicit limit state/performance function is defined, the failure probability can be obtained by statistical simulation. Reliability estimates of AHWR Inner Containment subjected to an internal pressure exceeding the design pressure, considering four stages of progressive failure prior to collapse are presented. © 2009 Elsevier B.V. All rights reserved.
About the journal
JournalNuclear Engineering and Design
ISSN00295493
Open AccessNo
Concepts (26)
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    Advanced heavy water reactors
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    ANALYSIS TOOLS
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    Computational tools
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    DESIGN PRESSURES
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    EFFICIENT FORMULATIONS
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    FAILURE PROBABILITIES
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    HIGH DIMENSIONAL MODEL REPRESENTATIONS
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    High-dimensional
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    HIGHER ORDERS
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    Input and outputs
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    INTERNAL PRESSURES
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    MODEL VARIABLES
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    Monte carlo simulations
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    Physical models
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    PROGRESSIVE FAILURES
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    Quantitative models
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    RESPONSE SURFACES
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    STATISTICAL SIMULATIONS
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    System response
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    Heavy water
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    Heavy water reactors
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    Monte carlo methods
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    Probability density function
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    Uncertain systems
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    Water analysis
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    Uncertainty analysis