Technical Elements Documentation
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    Interface IntegratedRiskResults

    Interface representing the calculated overall risk using defined risk metrics.

    HLR-RI-B

    {
      uuid: "123e4567-e89b-12d3-a456-426614174002",
      name: "Integrated Plant Risk Results - 2023",
      description: "Overall plant risk metrics integrated across all hazards and plant operating states",
      metrics: [
        {
          uuid: "123e4567-e89b-12d3-a456-426614174003",
          name: "Total Core Damage Frequency",
          metricType: RiskMetricType.CDF,
          value: 2.5e-6,
          units: "PER_REACTOR_YEAR",
          uncertainty: {
            distribution: DistributionType.LOGNORMAL,
            parameters: {
              mean: 2.5e-6,
              errorFactor: 3
            }
          }
        }
      ],
      integrationChallenges: "Different levels of detail in external hazards analysis required normalization"
    }
    interface IntegratedRiskResults {
        aggregationApproach?: {
            conservatismAdjustments?: string;
            description: string;
            detailLevelAdjustments?: string;
            justification: string;
        };
        calculationApproach: {
            alternativeApproach?: string;
            exceedanceFrequencyCurves?: boolean;
            frequencyConsequencePlots?: boolean;
            justification: string;
            meanValueApproach?: boolean;
            pointEstimateApproach?: boolean;
        };
        complianceStatus?: {
            basis?: string;
            criterion: string;
            limit: number;
            margin?: number;
            status: "COMPLIANT"
            | "NON_COMPLIANT"
            | "INDETERMINATE";
        }[];
        description?: string;
        eventSequenceVariationJustification?: string;
        exceedanceFrequencyCurveData?: {
            consequenceMetric: string;
            dataPoints: { consequenceValue: number; exceedanceFrequency: number }[];
            uncertaintyBands?: {
                confidenceLevel: number;
                dataPoints: { consequenceValue: number; exceedanceFrequency: number }[];
            }[];
        }[];
        frequencyConsequencePlotData?: {
            consequence: number;
            consequenceMetric: string;
            consequenceUncertainty?: {
                confidenceLevel: number;
                lowerBound: number;
                upperBound: number;
            };
            eventSequenceId: string;
            eventSequenceName?: string;
            frequency: number;
            frequencyUncertainty?: {
                confidenceLevel: number;
                lowerBound: number;
                upperBound: number;
            };
        }[];
        hazardGroupContributions?: Record<string, number>;
        integrationChallenges?: string;
        keyAssumptions?: string[];
        metrics: RiskMetric[];
        plantOperatingStateContributions?: Record<string, number>;
        radioactiveSourceContributions?: Record<string, number>;
    }

    Hierarchy

    • Unique
    • Named
      • IntegratedRiskResults
    Index

    Properties

    aggregationApproach? calculationApproach complianceStatus? description? eventSequenceVariationJustification? exceedanceFrequencyCurveData? frequencyConsequencePlotData? hazardGroupContributions? integrationChallenges? keyAssumptions? metrics plantOperatingStateContributions? radioactiveSourceContributions?

    Properties

    aggregationApproach?: {
        conservatismAdjustments?: string;
        description: string;
        detailLevelAdjustments?: string;
        justification: string;
    }

    Specific approach used to account for differences in level of detail and conservatism when aggregating results from different sources [152, RI-B3].

    Type declaration

    • OptionalconservatismAdjustments?: string

      Adjustments made to ensure consistent level of conservatism

    • description: string

      Description of the approach

    • OptionaldetailLevelAdjustments?: string

      Adjustments made to ensure consistent level of detail

    • justification: string

      Justification for the approach

    calculationApproach: {
        alternativeApproach?: string;
        exceedanceFrequencyCurves?: boolean;
        frequencyConsequencePlots?: boolean;
        justification: string;
        meanValueApproach?: boolean;
        pointEstimateApproach?: boolean;
    }

    Calculation approach used for risk integration [152, RI-B2]. Specifies which approach(es) from RI-B2 were used.

    Type declaration

    • OptionalalternativeApproach?: string

      Description of alternative approaches, if used [152, RI-B2].

    • OptionalexceedanceFrequencyCurves?: boolean

      Whether exceedance frequency curves (CCDF) were used [152, RI-B2(c)].

    • OptionalfrequencyConsequencePlots?: boolean

      Whether frequency-consequence plots were used [152, RI-B2(b)].

    • justification: string

      Justification for the selected approach(es) [152, RI-B2].

    • OptionalmeanValueApproach?: boolean

      Whether mean value approach was used (sum of the product of mean frequencies and mean consequences) [152, RI-B2(a)].

    • OptionalpointEstimateApproach?: boolean

      Whether point estimate approach was used (sum of the product of point estimate frequencies and consequences) [152, RI-B2(a)].

    complianceStatus?: {
        basis?: string;
        criterion: string;
        limit: number;
        margin?: number;
        status: "COMPLIANT" | "NON_COMPLIANT" | "INDETERMINATE";
    }[]

    Status of compliance with applicable risk acceptance criteria.

    description?: string

    Description of the integrated risk results [152, RI-B2].

    eventSequenceVariationJustification?: string

    Justification that the selection of event sequence variations within each family is representative of the range of potential outcomes [152, RI-B5].

    exceedanceFrequencyCurveData?: {
        consequenceMetric: string;
        dataPoints: { consequenceValue: number; exceedanceFrequency: number }[];
        uncertaintyBands?: {
            confidenceLevel: number;
            dataPoints: { consequenceValue: number; exceedanceFrequency: number }[];
        }[];
    }[]

    Exceedance frequency curve data, if this approach was used [152, RI-B2(c)]. Represents complementary cumulative distribution function (CCDF) data.

    Type declaration

    • consequenceMetric: string

      Consequence metric (e.g., "person-rem", "Ci released")

    • dataPoints: { consequenceValue: number; exceedanceFrequency: number }[]

      Data points for the exceedance frequency curve

    • OptionaluncertaintyBands?: {
          confidenceLevel: number;
          dataPoints: { consequenceValue: number; exceedanceFrequency: number }[];
      }[]

      Uncertainty in the exceedance frequency curve

    frequencyConsequencePlotData?: {
        consequence: number;
        consequenceMetric: string;
        consequenceUncertainty?: {
            confidenceLevel: number;
            lowerBound: number;
            upperBound: number;
        };
        eventSequenceId: string;
        eventSequenceName?: string;
        frequency: number;
        frequencyUncertainty?: {
            confidenceLevel: number;
            lowerBound: number;
            upperBound: number;
        };
    }[]

    Frequency-consequence plot data, if this approach was used [152, RI-B2(b)].

    Type declaration

    • consequence: number

      Consequence value (mean or point estimate)

    • consequenceMetric: string

      Consequence metric (e.g., "person-rem", "Ci released")

    • OptionalconsequenceUncertainty?: { confidenceLevel: number; lowerBound: number; upperBound: number }

      Uncertainty in consequence (e.g., 5th and 95th percentiles)

    • eventSequenceId: string

      ID of the event sequence or event sequence family

    • OptionaleventSequenceName?: string

      Name of the event sequence or event sequence family

    • frequency: number

      Frequency value (mean or point estimate)

    • OptionalfrequencyUncertainty?: { confidenceLevel: number; lowerBound: number; upperBound: number }

      Uncertainty in frequency (e.g., 5th and 95th percentiles)

    hazardGroupContributions?: Record<string, number>

    Breakdown of risk contributions by hazard group.

    { "INTERNAL_EVENTS": 1.5E-6, "SEISMIC": 7.5E-7, "INTERNAL_FLOOD": 2.5E-7 }
    integrationChallenges?: string

    Identification of any differences in the level of detail, conservatism, and realism when integrating results from different sources, hazards, or POSs [152, RI-B4].

    keyAssumptions?: string[]

    Documentation of key assumptions affecting the integrated results.

    metrics: RiskMetric[]

    The risk metrics used for calculating the overall risk [152, RI-B2].

    plantOperatingStateContributions?: Record<string, number>

    Breakdown of risk contributions by plant operating state.

    { "FULL_POWER": 2.0E-6, "LOW_POWER": 3.5E-7, "SHUTDOWN": 1.5E-7 }
    radioactiveSourceContributions?: Record<string, number>

    Identification of all sources of radioactive material considered and their risk contributions [152, RI-B5].

    { "Reactor Core 1": 2.0E-6, "Spent Fuel Pool": 5.0E-7 }

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