Abstract
A core-catcher is one of the mitigation systems that provide functions of molten corium cooling and stabilization during a severe accident. Toshiba has been developing a compact corecatcher to be placed at the lower drywell floor in the containment vessel for the next generation BWR as well as near term ABWR. This paper presents the evaluation of heat removal capability of the core-catcher with inclined cooling channels, our verification status and plan. The heat removal capability of the core-catcher is analyzed by using the newly developed two-phase flow analysis code which incorporates drift flux parameters for inclined channels and the CHF correlation obtained from SULTAN tests . Effects of geometrical parameters such as the inclination and the gap size of the cooling channel on the heat removal capability are also evaluated. These results show that the core-catcher has sufficient capability to cool the molten corium during a severe accident. Based on the analysis, it has been shown that the core-catcher has an efficient capability of heat removal to cool the molten corium.
| Original language | English |
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| Title of host publication | International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009 |
| Publisher | Atomic Energy Society of Japan |
| Pages | 1075-1082 |
| Number of pages | 8 |
| Volume | 2 |
| ISBN (Print) | 9781617386084 |
| Publication status | Published - 2009 |
| Externally published | Yes |
| Event | International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009 - Shinjuku, Tokyo Duration: 2009 May 10 → 2009 May 14 |
Other
| Other | International Congress on Advances in Nuclear Power Plants 2009, ICAPP 2009 |
|---|---|
| City | Shinjuku, Tokyo |
| Period | 09/5/10 → 09/5/14 |
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Nuclear Energy and Engineering