Boilup threshold for the bottled-up transition phase pool. [LMFBR]

Conference · Sun Oct 01 04:00:00 EDT 1978

OSTI ID:6052694

Martin, F. J.

Since the inception of the hypothesized transition phase, for the late stages of a postulated LMFBR accident, there has been a continual effort to characterize the anticipated conditions of such a hypothetical state. To date, several techniques and methods have been employed to analyze the potential for energetic criticality. As part of this effort, an arbitrary criterian of monotonical dispersiveness has been employed as the measure of diminished recriticality potential. The various attempts to demonstrate monotonic dispersiveness have included experimental demonstrations, theoretical approaches, and integrated analysis using both. As part of this treatment, flow regime maps have been devised as a convenient method for inferring the state of dispersiveness. They included bubbly, churn turbulent, foam and drop fluidized regimes. Of these, foam and drop fluidized regimes were considered the most dispersive. The main thrust of the analysis to date, including flow regime maps, relates primarily to the open pool configuration. However, the bottled configuration may be the pertinent geometry. To date, no reliable escape path has been demonstrated for the advanced stages of core disruption, although strong potential escape mechanisms have been identified and are currently being analyzed. The bottled pool is examined in this paper.

• Research Organization: Hanford Engineering Development Lab., Richland, WA (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: EY-76-C-14-2170
• OSTI ID: 6052694
• Report Number(s): HEDL-SA-1595-FP; CONF-781105-95
• Country of Publication: United States
• Language: English

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ACCIDENTS
ADIABATIC PROCESSES
BOILING
BREEDER REACTORS
CORIUM
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FLUID MECHANICS
HYDRODYNAMICS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MECHANICS
MELTDOWN
PHASE TRANSFORMATIONS
POOL BOILING
PRESSURIZING
REACTOR ACCIDENTS
REACTORS