Guide pin assembly for a nuclear reactor

Patent · Tue Apr 11 04:00:00 EDT 1989

OSTI ID:5911209

Hornak, L P; Meuschke, R E

A guide pin assembly is described for aligning the upper hold down plate of the top nozzle of a fuel assembly with the upper core plate of a pressurized water nuclear reactor comprising: a guide pin having a generally circular cross-section including a nose having engagement means thereon; a threaded portion, adjacent the nose, having a threaded outer surface; a shaft, adjacent the threaded portion; an end, adjacent the shaft, including a top having a diameter greater than that of the diameter of the first bore in the upper core plate; a nut adapted to be threaded on to the threaded surface of the guide pin, the nut including a top and a bottom; and an annular locking cup securable about the nut and adapted to engage the engagement means on the nose of the guide pin when the nut has been tightened onto the threaded surface of the threaded portion of the guide pin so that the bottom of the nut abuts the upper surface of the upper core plate.

• Assignee: Westinghouse Electric Corp., Pittsburgh, PA
• Patent Number(s): US 4820479
• OSTI ID: 5911209
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
DESIGN
FASTENERS
FUEL ASSEMBLIES
FUEL ELEMENTS
FUEL PINS
JOINTS
NOZZLES
PWR TYPE REACTORS
REACTOR COMPONENTS
REACTORS
THREADED JOINTS
WATER COOLED REACTORS
WATER MODERATED REACTORS