Control rod drive

Patent · Wed Jan 01 00:00:00 EST 1986

OSTI ID:865839

Hawke, Basil C ^[1]

---

1. Solana Beach, CA

A control rod drive uses gravitational forces to insert one or more control rods upwardly into a reactor core from beneath the reactor core under emergency conditions. The preferred control rod drive includes a vertically movable weight and a mechanism operatively associating the weight with the control rod so that downward movement of the weight is translated into upward movement of the control rod. The preferred control rod drive further includes an electric motor for driving the control rods under normal conditions, an electrically actuated clutch which automatically disengages the motor during a power failure and a decelerator for bringing the control rod to a controlled stop when it is inserted under emergency conditions into a reactor core.

• Research Organization: GA TECHNOLOGIES INC
• DOE Contract Number: AT03-76SF70046
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4587084
• OSTI ID: 865839
• Country of Publication: United States
• Language: English

Related Subjects

control
rod
drive
gravitational
forces
insert
rods
upwardly
reactor
core
beneath
emergency
conditions
preferred
vertically
movable
weight
mechanism
operatively
associating
downward
movement
translated
upward
electric
motor
driving
normal
electrically
actuated
clutch
automatically
disengages
power
failure
decelerator
bringing
controlled
stop
inserted
rod drive
control rod
electric motor
reactor core
control rods
upward movement
normal conditions
vertically movable
electrically actuated
downward movement
power failure
normal condition
emergency conditions
gravitational force
/376/185/976/