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 : 171 / 295Document ID.No.UKEPR-0002-162 Issue 04SUB-SECTION 16.2.2.4 – TABLE 8Selected CORFLOW results regarding melt propagation into the core catcher for standardcase 3, as compared to parametric variations [Ref]Unit Case 3 with low T 0 with low A GGate area m² 2.4 2.4 0.24Initial fluid temperature K 2600 2400 2600Front propagation time to opposite wall s 3.9 4.1 7.4Time to cover entire spreading area s 6.5 6.6 13Maximum velocity in spreading direction m/s 7.6 7.5 8.4
SUB-CHAPTER : 16.2PRE-CONSTRUCTION SAFETY REPORTCHAPTER 16: RISK REDUCTION AND SEVEREACCIDENT ANALYSESPAGE : 172 / 295Document ID.No.UKEPR-0002-162 Issue 04SUB-SECTION 16.2.2.4 – TABLE 9Calculated steaming rate for the two flooding rates of 50 kg/s (top) and 100 kg/s (bottom)The data in this table are principally applicable, but relate to the case of 10 cm sacrificialconcrete. Data for 15 cm layer thickness are also available [Ref]PeriodSteaming rate0-2246 s 50 kg/s2246 – 8434 s 0> 8434 s 11 kg/sPeriodSteaming rate0-986 s 100 kg/s986 – 7174 s 0> 7174 s 11 kg/s
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16.2 - Severe Accident Analysis (RRC-B) - EDF Hinkley Point

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