Journal of Nuclear Energy Science & Power Generation TechnologyISSN: 2325-9809

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Comparative Transient Analysis of Large Break Loss of Coolant Accident (LBLOCA) with Subsequent Loss of Offsite Power and all AC power in VVER-1200 Reactor using PC Based VVER-1200 NPP Simulator

The generation III+ VVER-1200 (AES-2006) reactor design is equipped with improved safety features with component redundancy compared to the previous models. This paper is concerned with the performance of the active and passive safety features during the transient of major Beyond Design Basis Accident (BDBA) scenario. The study is done considering Large Break Loss of Coolant Accident (LB LOCA) with Loss of Offsite Power (LOOP) and LB LOCA with loss of all AC power (LOACP) sources namely station blackout using PC based VVER-1200 NPP simulator. By the effectiveness of the active and passive cooling components, the temperature of the hot leg and cold leg is observed to be 104 °C and 69°C for LB LOCA with LOOP and 135°C and 125°C for LB LOCA with LOACP. Comparative analyses are compatible with IAEA safety guideline.          

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