Technical Elements Documentation
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    Interface RiskSignificanceCriteria

    Interface defining the criteria used to establish risk significance.

    HLR-RI-A

    {
      uuid: "123e4567-e89b-12d3-a456-426614174000",
      name: "CDF Risk Significance Criteria",
      description: "Criteria for determining risk-significant contributors to Core Damage Frequency",
      criteriaType: RiskSignificanceCriteriaType.HYBRID,
      metricType: RiskMetricType.CDF,
      absoluteThresholds: {
        eventSequence: 1.0e-7,
        basic: 1.0e-8,
        component: 1.0e-7
      },
      relativeThresholds: {
        eventSequence: 0.01,
        basic: 0.005,
        component: 0.01
      },
      justification: "Based on regulatory guidance and industry practice"
    }
    interface RiskSignificanceCriteria {
        absoluteThresholds?: {
            basic?: number;
            component?: number;
            eventSequence?: number;
            eventSequenceFamily?: number;
            humanFailure?: number;
            system?: number;
            [key: string]: undefined | number;
        };
        criteriaType: string;
        description?: string;
        intendedApplications?: string[];
        justification: string;
        metricType: string;
        minimumReportingConsequence?: string;
        references?: string[];
        relativeThresholds?: {
            basic?: number;
            component?: number;
            eventSequence?: number;
            eventSequenceFamily?: number;
            humanFailure?: number;
            system?: number;
            [key: string]: undefined
            | number;
        };
    }

    Hierarchy

    • Unique
    • Named
      • RiskSignificanceCriteria
    Index

    Properties

    absoluteThresholds? criteriaType description? intendedApplications? justification metricType minimumReportingConsequence? references? relativeThresholds?

    Properties

    absoluteThresholds?: {
        basic?: number;
        component?: number;
        eventSequence?: number;
        eventSequenceFamily?: number;
        humanFailure?: number;
        system?: number;
        [key: string]: undefined | number;
    }

    Absolute thresholds for determining risk significance [151, RI-A2, RI-A3]. Different thresholds can be defined for different PRA elements.

    Type declaration

    • [key: string]: undefined | number

      Other specific thresholds

    • Optionalbasic?: number

      Threshold for basic events

    • Optionalcomponent?: number

      Threshold for components

    • OptionaleventSequence?: number

      Threshold for event sequences

    • OptionaleventSequenceFamily?: number

      Threshold for event sequence families

    • OptionalhumanFailure?: number

      Threshold for human failure events

    • Optionalsystem?: number

      Threshold for systems

    criteriaType: string

    The type of risk significance criteria used.

    RiskSignificanceCriteriaType.ABSOLUTE
    description?: string

    Detailed description of the risk significance criteria [151, RI-A1].

    intendedApplications?: string[]

    PRA applications this criteria is intended to support.

    justification: string

    Justification for the selected risk significance criteria, ensuring consistency with the intended PRA applications [151, RI-A4].

    metricType: string

    The risk metric this criteria applies to.

    minimumReportingConsequence?: string

    Minimum reporting consequence level, or justification for an alternative [152, RI-A5].

    "10% of the consequences due to background radiation dose"
    references?: string[]

    References to any supporting documents, standards, or guidance.

    relativeThresholds?: {
        basic?: number;
        component?: number;
        eventSequence?: number;
        eventSequenceFamily?: number;
        humanFailure?: number;
        system?: number;
        [key: string]: undefined | number;
    }

    Relative thresholds (as fraction of total) for determining risk significance [151, RI-A2, RI-A3]. Different thresholds can be defined for different PRA elements.

    Type declaration

    • [key: string]: undefined | number

      Other specific thresholds

    • Optionalbasic?: number

      Threshold for basic events

    • Optionalcomponent?: number

      Threshold for components

    • OptionaleventSequence?: number

      Threshold for event sequences (e.g. 0.01 for 1% of total)

    • OptionaleventSequenceFamily?: number

      Threshold for event sequence families

    • OptionalhumanFailure?: number

      Threshold for human failure events

    • Optionalsystem?: number

      Threshold for systems

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