Anti-ejection system for control rod drives

Patent · Tue Aug 30 00:00:00 EDT 1977

OSTI ID:5310359

Matthews, J C

A linearly movable latch mechanism is provided to move into engagement with a deformable collet whenever an undesired ejection of a leadscrew is initiated from a nuclear reactor mounted control rod drive. Such an undesired ejection would occur in the event of a rupture in a housing of the control rod drive. The collet is deformed by the linear movement of the latch mechanism to wedge itself against the leadscrew and prevent the ejection of the leadscrew from the housing. The latch mechanism is made to be controllably engageable with the leadscrew and when thus engaged to allow the leadscrew to move in a control direction while moving with the leadscrew to engage and deform the collet when the leadscrew moves in an ejection direction. 13 claims, 2 figures.

• Assignee: TIC; EDB-78-021127; ERA-03-010378
• Patent Number(s): US 4044622
• OSTI ID: 5310359
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220400* -- Nuclear Reactor Technology-- Control Systems
CONTROL ROD DRIVES
DESIGN
POWER REACTORS
REACTOR COMPONENTS
REACTORS