Wide range flux monitor assembly

Patent · Tue Nov 18 04:00:00 EST 1986

OSTI ID:6972214

Glesius, F L; Kroon, J C; Schneider, D A; Myrabo, A

This patent describes an in-core wide range flux monitor assembly for boiling water reactors having a monitor range of 10/sup -8/% to 100% full power comprising: at least one source and intermediate range fission detector to detect neutron flux at least within the range of 10/sup -8/% to 10% of full power and to produce a source and intermediate range output signal representative thereof. The detector has an ion chamber and an insulating oversheath for insulating the ion chamber from reactor vessel potential. The oversheath is exposed to reactor ground potential and electrically isolated from instrument ground potential, an insulation ring being disposed adjacent the oversheath terminate end portion; at least one power range fission detector to detect neutron flux at least within the range of 1% to 100% of full power and to produce a power range output signal representative thereof. The power range fission detector includes an insulating oversheath; and, means for processing the output signals whereby neutron flux may be monitored over a wide range of reactor power.

• Assignee: Reuter-Stokes, Inc., Twinsburg, OH
• Patent Number(s): US 4623508
• OSTI ID: 6972214
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210100* -- Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
BWR TYPE REACTORS
CONTAINERS
DETECTION
ELECTRICAL INSULATION
FISSION CHAMBERS
FLUXMETERS
IONIZATION CHAMBERS
MEASURING INSTRUMENTS
MONITORING
NEUTRON DETECTION
NEUTRON DETECTORS
NEUTRON FLUX
RADIATION DETECTION
RADIATION DETECTORS
RADIATION FLUX
REACTOR COMPONENTS
REACTOR CORES
REACTOR VESSELS
REACTORS
SIGNALS
WATER COOLED REACTORS
WATER MODERATED REACTORS