16.2 - Severe Accident Analysis (RRC-B) - EDF Hinkley Point

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SUB-CHAPTER : 16.2PRE-CONSTRUCTION SAFETY REPORTCHAPTER 16: RISK REDUCTION AND SEVEREACCIDENT ANALYSESPAGE : 165 / 295Document ID.No.UKEPR-0002-162 Issue 04SUB-SECTION 16.2.2.4 - TABLE 2Total core melt inventory and melt initial temperatures [Ref]OxidationLevel40%Melt CompositionOxidic Melt [kg] Metallic Melt [kg] RPV-bottom [kg]UO 2 ZrO 2 Zr Fe Cr Ni Zr Fe Cr Ni141700 20920 20900 53985 7710 5100 2320 41215 5890 3900Initial TemperaturesOxidic Melt: 2500°C Metallic Melt: 1550°C RPV-Bottom: 800°C(failure temperature~1300°C)
SUB-CHAPTER : 16.2PRE-CONSTRUCTION SAFETY REPORTPAGE : 166 / 295CHAPTER 16: RISK REDUCTION AND SEVEREACCIDENT ANALYSESDocument ID.No.UKEPR-0002-162 Issue 04SUB-SECTION 16.2.2.4 - TABLE 3Matrix summarising the set of COSACO calculations performed [Ref].The 1 st number indicates the initial mass as a fraction of the total core melt inventory.The 1 st letter indicates the time of initial melt release (Early/Late).The 2 nd letter indicates the assumption made for the Layered/Mixed mode.Initial melt massCase Nr.Time of first melt Layered Mode (L)[% of the total mass ofrelease Mixed Mode (M)core melt obtained by[sec after scram]MAAP]40%E-L 40 10000 L40%L-L 40 86000 L60%E-L 60 10000 L60%L-L 60 86000 L80%E-L 80 10000 L80%L-L 80 86000 L80%E-M 80 10000 M80%L-M 80 86000 M
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16.2 - Severe Accident Analysis (RRC-B) - EDF Hinkley Point

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