Nuclear reactor
- Greensburg, PA
- New Stanton, PA
- Herminie, PA
A nuclear reactor, particularly a liquid-metal breeder reactor, whose upper internals include outlet modules for channeling the liquid-metal coolant from selected areas of the outlet of the core vertically to the outlet plenum. The modules are composed of a highly-refractory, high corrosion-resistant alloy, for example, INCONEL-718. Each module is disposed to confine and channel generally vertically the coolant emitted from a subplurality of core-component assemblies. Each module has a grid with openings, each opening disposed to receive the coolant from an assembly of the subplurality. The grid in addition serves as a holdown for the assemblies of the corresponding subplurality preventing their excessive ejection upwardly from the core. In the region directly over the core the outlet modules are of such peripheral form that they nest forming a continuum over the core-component assemblies whose outlet coolant they confine. Each subassembly includes a chimney which confines the coolant emitted by its corresponding subassemblies to generally vertical flow between the outlet of the core and the outlet plenum. Each subplurality of assemblies whose emitted coolant is confined by an outlet module includes assemblies which emit lower-temperature coolant, for example, a control-rod assembly, or fertile assemblies, and assemblies which emit coolant of substantially higher temperature, for example, fuel-rod assemblies. The coolants of different temperatures are mixed in the chimneys reducing the effect of stripping (hot-cold temperature fluctuations) on the remainder of the upper internals which are composed typically of AISI-304 or AISI-316 stainless steel.
- Research Organization:
- Westinghouse Electric Corp., Madison, Pa. (USA)
- DOE Contract Number:
- AT(11-1)-2395
- Assignee:
- Westinghouse Electric Corporation (Pittsburgh, PA)
- Patent Number(s):
- US 4050985
- OSTI ID:
- 862929
- Country of Publication:
- United States
- Language:
- English
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reactor
particularly
liquid-metal
breeder
upper
internals
outlet
modules
channeling
coolant
selected
core
vertically
plenum
composed
highly-refractory
corrosion-resistant
alloy
example
inconel-718
module
disposed
confine
channel
emitted
subplurality
core-component
assemblies
grid
openings
receive
assembly
addition
serves
holdown
corresponding
preventing
excessive
ejection
upwardly
region
directly
peripheral
form
nest
forming
continuum
subassembly
chimney
confines
subassemblies
vertical
flow
confined
emit
lower-temperature
control-rod
fertile
substantially
temperature
fuel-rod
coolants
temperatures
mixed
chimneys
reducing
effect
stripping
hot-cold
fluctuations
remainder
typically
aisi-304
aisi-316
stainless
steel
core-component assemblies
rod assembly
breeder reactor
nuclear reactor
stainless steel
metal coolant
upper internals
rod assemblies
temperature fluctuations
cold temperature
outlet plenum
outlet coolant
vertical flow
fuel-rod assemblies
liquid-metal breeder
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