Design and preliminary analysis of in-vessel core catcher made of high-temperature ceramics material in PWR
Creators
- 1. State Nuclear Power Technology R and D Center, Beijing (China)
- 2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing (China)
Description
In order to protect the interior wall of pressure vessel from melting, as an additional way to external reactor vessel cooling (ERVC), a kind of in-vessel core catcher (IVCC) made of high-temperature ceramics material was designed. Through the high-temperature and thermal-resistance characteristic of IVCC, the distributing of heat flux was optimized. The results show that the downward average heat flux from melt in ceramic layer reduces obviously and the interior wall of pressure vessel doesn't melt, keeping its integrity perfectly. Increasing of upward heat flux from metallic layer makes the upper plenum structure's temperature ascend, but the temperature doesn't exceed its melting point. In conclusion, the results indicate the potential feasibility of IVCC made of high-temperature ceramics material. (authors)
Additional details
Publishing Information
- Journal Title
- Atomic Energy Science and Technology
- Journal Volume
- 45
- Journal Issue
- 11
- Journal Page Range
- p. 1334-1339
- ISSN
- 1000-6931
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 45068417
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- AUGMENTATION; CERAMICS; COOLING; CORE CATCHERS; DESIGN; HEAT FLUX; LAYERS; MELTING; MELTING POINTS; PRESSURE VESSELS; PWR TYPE REACTORS; REACTOR VESSELS; TEMPERATURE RANGE 0400-1000 K; WALLS
- Descriptors DEC
- CONTAINERS; ENRICHED URANIUM REACTORS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; POWER REACTORS; REACTOR COMPONENTS; REACTORS; TEMPERATURE RANGE; THERMAL REACTORS; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE; WATER COOLED REACTORS; WATER MODERATED REACTORS
Optional Information
- Notes
- 4 figs., 2 tabs., 8 refs.