... at the top. It was seen that the quenching and cooling of the melt can be achieved quickly and effectively in the case of bottom flooding. According to Sehgal [ 12 ], the strategy that is chosen for severe accident management should not lead to increase in early release probability by causing early...

... (e.g., condensation chamber of a boiling water reactor (BWR)). Investigations on pool scrubbing are carried out in the severe accident aerosol behavior (SAAB) test facility at the Juelich Research Center in the framework of a national project (“severe accident aerosol behavior-II”). SAAB is a unique...

... and subsequent melt eruption. severe accident water ingression crust–vessel gap effect of vessel angle Pressurized water reactors, in general, have engineered safety systems with diverse and redundant features to restore the reactor to safe state in the case of any postulated initiating event...

...Sergey Galushin; Dmitry Grishchenko; Pavel Kudinov Nordic boiling water reactor (BWR) design employs ex-vessel debris coolability in a deep pool of water as a severe accident management (SAM) strategy. Depending on melt release conditions from the vessel and core–melt coolant interactions...

... to the avert progression of the accident. The heat removal capability of the CV needs to be demonstrated in order to attain the goal of in-vessel retention, to contain the corium during severe accidents. A lot of numerical analysis of heat removal capability of the CV has been done. However, experimental...

... crust. Hence, it can be concluded that top flooding and side indirect cooling is an effective way of quenching and stabilizing the molten pool in the case of ex-vessel severe accident scenarios. C p = specific heat capacity, J/kg K I = inner vessel surface thermocouple series...

... Kostal. 14 09 2018 29 03 2019 VVER 1000 fission product severe accident safety MELCOR TRACE In response to the Fukushima Daiichi nuclear power plants (NPPs) accident, the European Commission ordered in May 2011 to perform stress tests on all NPPs operating...

... received March 12, 2018; final manuscript received June 16, 2018; published online January 24, 2019. Assoc. Editor: Jovica R. Riznic. 12 03 2018 16 06 2018 Fukushima Daiichi nuclear power station earthquake tsunami seismic damage off-site power severe accident It turns out...

...Tim Haste; Mirco Di Giuli; Gunter Weber; Sebastian Weber Accurate calculation of iodine behavior in the containment is very important in determining the potential radioactive release to the environment in light water reactor severe accidents (SAs). Of particular significance is the behavior of gas...

...Jun Wang; Yuqiao Fan; Yapei Zhang; Xinghe Ni; Wenxi Tian; Michael L. Corradini; Guanghui Su; Suizheng Qiu The occurrence of Fukushima has increased the focus on the development of severe accident codes and their applications. As a part of Chinese “National Major Projects,” a module in-vessel...

...Y. P. Zhang; S. P. Niu; L. T. Zhang; S. Z. Qiu; G. H. Su; W. X. Tian A severe accident (SA) is defined as an incident involving melting of the nuclear reactor core and the release of fission products (FP) from the fuel and their associated risks. In the SA, the containment may fail, causing...

... 3 2014 11 1 2015 15 01 2015 24 03 2015 severe accident IVR-ERVC focusing effect CFD In-vessel retention (IVR) through the external reactor vessel cooling (ERVC) is an important strategy for maintaining the integrity of the reactor pressure vessel (RPV) during...