Investigation of core meltdown phenomena and radioactive materials release in VVER‐1000/V446 nuclear reactor at severe accident condition due to LBLOCA along SBO

Ghasemi, A.; Pirouzmand, Ahmad; Kamyab, Shahabeddin

doi:10.1002/er.5056

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…It has been seen that most of the major accidents were caused by Loss of Coolant Accident (LOCA), loss of offsite power (LOOP), and loss of AC power (LOACP). Among them, LOCA is studied extensively [8], [10]. In the Chinese CPR100 reactor, [6] evaluated vessel rupture under various station blackout (SBO) scenarios together with the failure of the steam generator (SG) safety relief valve.…”

Section: Introductionmentioning

confidence: 99%

“…There are two kinds of LOCA, depending on the size of the leak or rupture [4]. A large break LOCA (LB LOCA) is a double-ended rupture in the primary coolant pipeline with a leak greater than 0.1m 2 [10], [11]. The scenario of loss of offsite power represents the failure of active part components which need electricity from the grid and failure of the active part as well as backup diesel generators in the case of loss of AC power.…”

Section: Introductionmentioning

confidence: 99%

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Transient Analysis of LBLOCA with Subsequent Loss of Offsite Power and Loss of All AC Power in VVER-1200 Reactor

Asaduzzaman,

Hassan,

Hossain

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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The generation III+ VVER-1200 (AES-2006) reactor is equipped with improved safety features with component redundancy compared to the previous models. This paper is concerned with the performance of active and passive safety features during the transient of a major beyond design basis accident (BDBA) scenario of the reactor. 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 (SBO) using VVER-1200 NPP simulator. It was found that the reactor is capable of mitigating such BDBA scenarios by the effectiveness of the active and passive safety systems. Moreover, LB LOCA with LOACP is observed to be more severe compared to LBLOCA with LOOP. This comparative analysis is compatible with IAEA safety guidelines.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%