External Hazards at Kozloduy and Belene Npp Sites
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RISK ENGINEERING, Ltd. Reliability – Safety - Management Engineering Services - Software Development EXTERNAL HAZARDS AT KOZLODUY AND BELENE NPP SITES Marin Kostov, Georgy Varbanov, Anton Andonov 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 111 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES Background • Fukushima – accident, error or logical result? • Stress test – Why it’s needed? • The consequences of Fukushima? 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 222 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES KASHIWAZAKI KARIWA NPP , M=6.6 2007 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 333 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES KASHIWAZAKI KARIWA NPP 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 444 RISK ENGINEERING, Ltd. SITE EVALUATION FOR NUCLEAR Reliability – Safety - Management Engineering Services - Software Development POWER PLANTS FUKUSHIMA DISASTER Sorce: WANO, March 14, 2011 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 555 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES NATURAL HAZARDS AFFECTING THE PLANT: BEYOND DESIGN BASE EARTHQUAKE FOLLOWING BY BEYOND DESIGN BASE TZUNAMI RESULTED IN: AUTOMATIC SEISMIC SCRAM OF THE REACTORS TOTAL BLACK OUT OF THE STATION TOTAL LOSS OF THE ULTIMATE HEAT SINK HYDROGEN BLAST IN THREE OF REACTOR BUILDINGS TOTAL OR PARTIAL CORE DAMEGE IN THREE OF REACTORS PARTIAL FUEL DAMAGE IN ONE SPENT FUEL POOL UNCONTROLED RELEASE OF RADIOACTIVITY 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 666 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES MAIN REASONS UNDERESTIMATION OF THE DESIGN BASE ACCOSIATED WITH THE NATURAL HAZARDS INABILITY OF THE PLANT DESIGN TO MITIGATE THE EFFECTS OF THE BEYOND DESIGN BASE NATURAL HAZARDS WEAK PREPEREDNESS TO CONTROL CRITICAL SITUATIONS STRESS TESTS EVALUATION OF THE PLANT RESPONSE TO BEYOND DESIGN BASE NATURAL HAZARDS AND COMBINATION BETWEEN THEM EVALUATION OF THE PLANT RESPONSE IN CONDITIONS OF TOTAL BLACK OUT EVALUATION OF THE PLANT RESPONSE IN CONDITIONS OF TOTAL ULTIMATE HEAT SINK COMBINATION BETWEEN LOOP AND UHS 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 777 RISK ENGINEERING, Ltd. Reliability – Safety - Management Engineering Services - Software Development 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 20 May 2014 888 RISK ENGINEERING, Ltd. Reliability – Safety - Management Engineering Services - Software Development 7.6-8.0 7.1-7.5 6.6-7.0 6.1-6.5 5.6-6.0 5.1-5.5 4.6-5.0 4.1-4.5 4.1-4.5 44 4.6-5.0 4.1-4.5 4.1-4.5 43 4.1-4.5 4.6-5.0 4.6-5.0 4.6-5.0 4.1-4.5 4.1-4.5 42 4.6-5.0 4.6-5.0 41 22 24 26 28 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 20 May 2014 999 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES SEISMIC DESIGN BASE FOR KOZLODUY AND BELENE NPP SITES KNPP BNPP Return period -10000 years Return period -10000 years PGA h = 0.2 g PGA h = 0.24 g PGA h.l = 0.16 g PGA v = 0.155 g PGA v = 0.1 g PGA v.l = 0.13 g 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 11101000 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES SEISMIC DESIGN BASE FOR KNPP AND BNPP THE SEISMIC DESIGN BASES FOR BOTH SITES ARE SIMILAR THE SEISMIC HAZARD FOR BOTH SITES IS DOMINATED BY VRANCEA SOURCE THE SHAPES OF THE DBE RESPONSE SPECTRA ARE SIMILAR DUE TO THE LONG PERIOD CONTRIBUTION OF VRANCEA SOURCE THE DBE PGA FOR BNPP SITE IS SLIGHTLY HIGHER DUE TO THE NEAREST LOCATION TO VRANCEA AND GORNA ORIAHOVITZA SOURCES 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 111111 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES DETERMINISTIC SEISMIC HAZARD ASSESSMENT 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 11121222 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES DETERMINISTIC SEISMIC HAZARD ASSESSMENT – MAX. SCENARIA 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 11131333 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES FLOODING OF THE KNPP AND BNPP SITES Floods caused by natural high water level Floods caused by failure of water control structures Floods due to failure of water control structures combined with extreme precipitation and wind waves KNPP BNPP SITE ELEVATION 35 m 28.5 m RIVER LEVEL PROB. 0.01% 32.23 m 26.38 m LEVEL OF PROTECTIVE DIKES 31-32 m 25-26 m Basic water discharge (m 3/s) 10000 15000 10000 15000 FAILURE OF IRON GATE1 AND IRON GATE2, W/O NIKOPOL-TURNU MAGURELE 31.78 32.14 24.94 25.79 FAILURE OF IRON GATE1 AND IRON GATE 2, AND NUKOPOL-TURNUMAGURELE 34.56 34.26 26.88 26.67 FAILURE OF IRON GATE1 AND IRON GATE 2, AND NUK.-T.M + SILISTRA-KALARASH 34.56 34.26 27.31 26.83 EXTREME RAINS - PROBABILITY 0.01 - (expert judgment) 0.2 0.2 WIND WAVES (expert judgment) 0.3 0.3 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 11141444 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES FLOODING SCENARIA FOR THE KNPP SITE 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 11151555 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES FLOODING SCENARIA FOR THE BNPP SITE 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 11161666 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES FLOODIND SCENARIOS KNPP BNPP Flooding of the site (if HPC N – TM is constructed Flooding of the site ? – the safety margin is 0.6 1. without reconstruction of the dikes) m Partial flooding of the surroundings and isolation Total flooding of the surroundings and 2. of the site isolation of the site Increase of the underground water level with res- pective risks for the safety related underground The underground safety related structures are 3. structures and penetrations protected against flooding by the design 4. Damages in the national electric transmittal grid ? no 5. Loss of some safety related structures? no Clogging of the site surface water sewage system 6. during the extreme rains? 7 Partial flooding of Kozloduy (town) Flooding of Belene (town) 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 11171777 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES EVALUATION OF EXTERNAL HUMAN INDUCED EVENTS • Chemical explosions due to industrial accidents • Explosion during the transportation of explosive materials • Release of toxic and/or explosive gases • Release of radioactive gases • Forest or turf fire 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 11181888 RISK ENGINEERING, Ltd. SITE EVALUATION FOR NUCLEAR Reliability – Safety - Management Engineering Services - Software Development POWER PLANTS EVALUATION OF EXTERNAL HUMAN INDUCES EVENTS External blasts KNPP BNPP The risk from industrial The risk from industrial and transport induced and transport induced explosions is negligible. explosions is negligible. The Design Basis is The Design Basis is conservatively assumed conservatively assumed P=30kN/m2, t=1s P=30kN/m2, t=1s 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 11191999 RISK ENGINEERING, Ltd. EXTERNAL HAZARDS AT KOZLODUY Reliability – Safety - Management Engineering Services - Software Development AND BELENE NPP SITES EVALUATION OF EXTERNAL HUMAN INDUCES EVENTS Aircraft crash analysis – Design considerations for KNPP and BNPP KNPP BNPP Structural system: Structural system: Single Post-tensioned RC External RC Shell Containment Internal Post-tensioned RC Containment Design loading: Mass =10t Design Loading: Velocity=750km/h (208m/s) Mass=20t Velocity=215m/s Beyond Design Loading: Not considered Beyond Design Loading: Boeing 747 with various velocities 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 22202000 RISK ENGINEERING, Ltd. Reliability – Safety - Management Engineering Services - Software Development Air traffic • Group A – large airplanes with weight more than 330t (A380, A340, B747 and B777); • Group B – intermediate size airplanes with weight between 150t and 330t (A300, A330, A350, B767, B707); • Group C – small airplanes with weight less than 150t (A321, B737) 10, Vihren str., 1618 Sofia, Pavlovo, Bulgaria, phone +359 2 8089 501, fax +359 2 9507 751 22212111 RISK ENGINEERING, Ltd.