Standardized reduced length burnable absorber rods for a nuclear reactor

Patent · Tue Jun 06 04:00:00 EDT 1989

OSTI ID:5432530

Cooney, B F; Camden, Jr, T M

This patent describes a cluster of burnable poison type control rods useful in a fuel assembly of a nuclear reactor. The cluster of rods consists of: a common support member; and burnable poison type control rods supported by and depending from the common support member; each burnable poison type control rod being composed of an upper end portion, an intermediate portion and a lower end portion; each upper end portion including an upper end plug and an elongated upper hollow tubular extension having opposite upper and lower ends with the upper end plug sealably and rigidly connected to the upper end thereof; each lower end portion including a lower end plug and an elongated lower hollow tubular extensions having opposite upper and lower ends with the lower end plug sealably and rigidly connected to the lower end thereof; each intermediate portion including an elongated middle hollow tubular section having opposite upper and lower ends and a chamber defined therein between the opposite ends, a pair of upper and lower end caps rigidly attached respectively to the upper and lower ends of the middle section so as to seal the chamber, and a burnable poison material disposed in the chamber of the middle tubular section, the upper and lower hollow tubular extensions being devoid of nuclear fuel material and burnable poison material.

• Assignee: Westinghouse Electric Corp., Pittsburgh, PA
• Patent Number(s): US 4836977
• OSTI ID: 5432530
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220300 -- Nuclear Reactor Technology-- Fuel Elements
220400* -- Nuclear Reactor Technology-- Control Systems
ABSORPTION
BURNABLE POISONS
CONTROL
CONTROL ELEMENTS
DESIGN
FLUID POISON CONTROL
FUEL ASSEMBLIES
FUEL ELEMENT CLUSTERS
MATERIALS
MECHANICAL STRUCTURES
NEUTRON ABSORBERS
NUCLEAR POISONS
REACTOR COMPONENTS
REACTOR MATERIALS
ROD BUNDLES
SUPPORTS