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US 2003/0169839 A1Published application
Prefabricated in-core instrumentation chase
OwnerDonn Moore Mattesoninventor
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OwnerDonn Moore Mattesoninventor
Estimating the term…
A prefabricated in-core nuclear plant instrumentation chase concrete form is provided that has integral embedment plates at the locations where the in-core instrumentation guide thimble supports contact the walls of the chase. Structural steel shapes are located on the outside of the prefabricated chase at the embedment locations to transfer loads on axially-spaced, transverse, thimble support plates that route and support guide thimbles through which the in-core instrumentation pass, into the surrounding concrete structure. The guide thimble supports are installed in the pre-fabricated chase form at the factory and serve to strengthen the structure during shipping and handling as well as resist the loads applied by the wet concrete poured around the prefabricated chase during installation at a nuclear plant site.
A prefabricated nuclear reactor in-core instrumentation chase for supporting and routing a plurality of in-core instrumentation guide thimbles that extend from a seal table at an upper elevation outside a nuclear reactor vessel to an underside of the nuclear reactor vessel where the guide thimbles are coupled through the vessel to a plurality of instrumentation guide tubes within a core within the nuclear reactor vessel comprising:
A method of constructing a nuclear steam supply system having in-core nuclear instrumentation that is inserted into a core of a reactor vessel from an underside of the vessel including the steps of:
Dependencies are inferred from the claim text.