CONTROL ROD FOR NUCLEAR REACTORS

Patent · Wed Sep 14 04:00:00 EDT 1960

OSTI ID:4842254

Each control rod for a nuclear reactor is normally suspended by an electro-magnetically controlled gripper device, which is arranged to release it in order to effect reactor shut down. The rod comprises an upper head portion connected to a lower flexible active portion, the latter constituted by a series of links of a chain, each link being provided with neutron absorbing means; a link may suitably be formed by two semi-cylindrical parts held together by a surrounding stainless steel cylinder. The lower end of the flexible portion may be provided with a conical massive end piece. Preferably the head portion comprises a shock damping device that absorbs the kinetic energy to bring the falling rod to rest in the case of a reactor shut-down. This damping device contains two coaxial springs that are in mutual frictional contact. (NPO)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-15-027178
• OSTI ID: 4842254
• Report Number(s): FR 1230177
• Country of Publication: France
• Language: English

Related Subjects

ABSORPTION
CONFIGURATION
CONTROL ELEMENTS
ELECTROMAGNETIC FIELDS
IMPACT SHOCK
MACHINE PARTS
NEUTRONS
PATENT
REACTOR TECHNOLOGY
REACTORS
SHUTDOWN
STAINLESS STEELS
VESSELS