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

SUB-CHAPTER : 16.2PRE-CONSTRUCTION SAFETY REPORTCHAPTER 16: RISK REDUCTION AND SEVEREACCIDENT ANALYSESPAGE : 214 / 295Document ID.No.UKEPR-0002-162 Issue 04SUB-SECTION 16.2.2.5 - TABLE 9SB(LOCA) sequence of events for in-vessel phase(Data inferred from the information given in section 2.1)KEY EVENTSTIMEReactor scram 0 h 00 min 120 sStart of Partial Cooldown 0 h 04 min 240 sReactor Coolant Pump run down 0 h 09 min 540 sStart of Fast Cooldown 0 h 31 min 1860 sAccumulator injection start 0 h 32 min 1900 sAccumulator water depletion 0 h 33 min 1980 sCore uncovery 39 h 17 min 141420 sOnset of oxidation 40 h 50 min 147000 sSA dedicated PZR valve opening 40 h 20 min 145200 sStart of core melting 40 h 56 min 147360 sStart of core relocation to lowerhead46 h 12 min 166320 sRPV failure 46 h 52 min 168700 s