Advanced Assessment Methods for Nuclear Power Plant Safety

Research Insights

  • Public summary report 1

    Work Package 1 – State of the art of LTO improvements.

    The report covers:
    • Residual stress distributions for welds and cladding
    • Warm pre-stress (WPS) approach applied in PTS
    • Thermal-hydraulic (TH) analysis
    • Probabilistic PTS analysis
    • Identification of further LTO improvements having an impact on PTS.
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  • Public summary report 2

    Work Package 2 - Improvement of TH analysis

    The report covers:
    • Quantification of impact of LTO improvements and human factors on TH analysis boundary conditions
    • Evaluation of uncertainties in TH analysis related to computer code models, plant parameters and human factors
    • Thermal-hydraulic (TH) analysis
    • Performance of the TH uncertainty analysis
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  • Public summary report 3

    Work Package 3 - Deterministic margin assessment

    The report covers:
    • Structural assessment
    • Evaluation of uncertainties in TH analysis related to computer code models, plant parameters and human factors
    • Definition of fracture mechanics benchmark
    • First fracture mechanics benchmark performance
    • Margin assessment related to LTO improvements
    • Margin assessment related to TH uncertainties
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  • Public summary report 4

    Work Package 4 - Probabilistic margin assessment

    The report covers:
    • Structural assessment
    • Definition of a probabilistic benchmarks
    • Baseline probabilistic benchmark
    • Probabilistic benchmark related to LTO improvements
    • Probabilistic benchmark related to uncertainties in the thermal hydraulic data
    • Probabilistic margin assessment
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