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

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

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

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SUB-CHAPTER : <strong>16.2</strong>PRE-CONSTRUCTION SAFETY REPORTCHAPTER 16: RISK REDUCTION AND SEVEREACCIDENT ANALYSESPAGE : 55 / 295Document ID.No.UKEPR-0002-162 Issue 04SECTION <strong>16.2</strong>.2.1 - TABLE 10Event chronology for core melt scenarios without mitigation no PDS-line opening(MAAP 4 code) [Ref]Core oxidation onsetCore meltingStart of core relocationinto lower headAccumulator/injection/depletionMHSI/LHSI shutoffreachedVessel failureTLOFW1h20min1h40min3h29min--3h51minSB LOCA COLD LEG WITHOUT SG PARTIAL COOLDOWN3.8 cm cold leg(5 cm²)3.8 cm cold leg(11.4 cm²)5 cm coldleg(20 cm²)7.5 cm cold leg(46 cm²)5h55min 2h38min 1h32min 47min5h57min 2h40min 1h36min 50min8h04min 5h52min 3h52min 6h18min7h07min /8h46min3h10min /6h29min1h45min /6h03min4min / 3h49min6h24min /8h45min2h45min /6h28min1h27min /6h02min36min /3h49min8h45min 6h28min 6h03min 7h56min

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