FUMO-E: an internal fuel motion model for annular fuel. [LMFBR]
The FUMO-E internal fuel motion model for annular fuel was developed to assess the viability of internal fuel motion as an inherent safety shutdown mechanism during the initiation phase of hypothetical LMFBR accidents. This concept involves the ejection of molten fuel through the central hole away from the active fuel core region during a transient overpower event to provide a prompt negative reactivity feedback. The principal role of the FUMO-E is to quantitatively assess the driving force for fuel ejection by transient fission gas release, fuel density changes, and fuel vapor pressure, and also to determine the effect of fuel refreezing and plugging in the central hole on limiting the fuel ejection. After completion of the assessment of a validation process, the FUMO-E model will be incorporated into the MELT-III whole-core accident analysis code to perform the assessment of the internal fuel motion concept as a viable safety shutdown mechanism.
- Research Organization:
- Hanford Engineering Development Lab., Richland, WA (USA)
- DOE Contract Number:
- AC06-76FF02170
- OSTI ID:
- 5330810
- Report Number(s):
- HEDL-SA-2505-S; CONF-811103-103; ON: DE82010181; TRN: 82-013430
- Resource Relation:
- Conference: ANS winter meeting, San Francisco, CA, USA, 29 Nov 1981; Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Effect of axial blanket central hole size on internal fuel motion. [LMFBR]
Internal fuel motion in annular fuel as an inherent safety shutdown mechanism during hypothetical LMFBR accidents
Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
COMPUTER CODES
F CODES
LMFBR TYPE REACTORS
MELTDOWN
REACTIVITY WORTHS
ANNULAR FUEL ELEMENTS
ENGINEERED SAFETY SYSTEMS
REACTOR SAFETY
ACCIDENTS
BREEDER REACTORS
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FAST REACTORS
FBR TYPE REACTORS
FUEL ELEMENTS
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REACTOR ACCIDENTS
REACTOR COMPONENTS
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