BWR fuel assembly channel with localized neutron absorber strips for LPRM calibration

Patent · Tue Apr 04 04:00:00 EDT 1989

OSTI ID:6120434

Thomson, R M; Taleyarkhan, R P

This patent describes a BWR fuel assembly channel, consisting of a plurality of elements attached to the exterior of the channel of at least one fuel assembly so as to be spaced from and in non-contacting relation with the channels of adjacent fuel assemblies and with the fuel rods of the one fuel assembly, located axially at different preselected positions therealong at each of which position it is desired to produce a localized change in neutron flux and located adjacent to and spaced from the hollow tube of the string. Each of the elements is composed of a material capable of producing a localized change in neutron flux such that the sole function of each element is to produce such localized change in neutron flux upon passage of the probe through the hollow tube of the string and past the elements, whereby the probe will sense the neutron flux change being produced by each of the elements and thereby the position of the probe can be tracked as it is moved through the string tube.

• Assignee: Westinghouse Electric Corp., Pittsburgh, PA
• Patent Number(s): US 4818471
• OSTI ID: 6120434
• 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
CALIBRATION
DESIGN
FUEL CHANNELS
NEUTRON ABSORBERS
PROBES
REACTOR CHANNELS
REACTOR COMPONENTS
REACTOR MONITORING SYSTEMS
REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS