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Class Information
Number: 376/242
Name: Induced nuclear reactions: processes, systems, and elements > With control of reactor (e.g., control of coolant flow) > Means to inhibit control rod movement
Description: Subject matter wherein a reactivity affecting material is locked in a fixed position relative to the reactor fuel for a predetermined time period.










Patents under this class:

Patent Number Title Of Patent Date Issued
8644445 Spring mounting device for nuclear fuel rod Feb. 4, 2014
8433029 Determination of safety limit minimum critical power ratio Apr. 30, 2013
6862329 In-cycle shuffle Mar. 1, 2005
6707870 Method for determining friction forces occurring on an object moving in a guide on an inaccessible site Mar. 16, 2004
6631176 Fuel assembly Oct. 7, 2003
6574295 Boiling water type nuclear reactor use control rod Jun. 3, 2003
6553090 Control system of nuclear power plant, and control method thereof Apr. 22, 2003
6477218 Control system of nuclear power plant, and control method thereof Nov. 5, 2002
6246741 Fuel assembly Jun. 12, 2001
5978429 Method and device for operating a reactor in an unstable state Nov. 2, 1999
5621776 Fault-tolerant reactor protection system Apr. 15, 1997
5586156 Reactor protection system with automatic self-testing and diagnostic Dec. 17, 1996
5581586 Drive device for control rod drive mechanisms Dec. 3, 1996
5517536 Magnetic coupling device for control rod drive May. 14, 1996
5373539 Safety system grade apparatus and method for detecting a dropped control rod and malfunctioning exit thermocouples in a pressurized water reactor Dec. 13, 1994
5200139 Method and apparatus for protecting a nuclear reactor Apr. 6, 1993
5137682 Antieject device for control members of nuclear reactors Aug. 11, 1992
5131510 Brake assembly for a control rod drive Jul. 21, 1992
5102613 Radial brake assembly for a control rod drive Apr. 7, 1992
5089211 Control rod drive Feb. 18, 1992
5085823 Latch assembly for a control rod drive Feb. 4, 1992
5076994 Lock assembly for a control rod drive Dec. 31, 1991
5069860 Rotary lock for a control rod drive Dec. 3, 1991
4990304 Instrumentation tube features for reduction of coolant flow-induced vibration of flux thimble tube Feb. 5, 1991
4844856 Process for automatic regulation of the soluble boron content of the cooling water of a pressurized water nuclear reactor Jul. 4, 1989
4769208 Automatic safety rod for reactors Sep. 6, 1988
4716009 Dropped rod protection insensitive to large load loss Dec. 29, 1987
4707324 Controlling the response of a pressurized water reactor to rapid fluctuations in load Nov. 17, 1987
4699749 Controlling a nuclear reactor with dropped control rods Oct. 13, 1987
4686077 Nuclear reactor installation Aug. 11, 1987
4624826 Control rod velocity limiter Nov. 25, 1986
4282061 System for preventing erroneous operation of control rods Aug. 4, 1981
4184514 Valve system incorporating single failure protection logic Jan. 22, 1980
4129475 Method of operating a nuclear reactor Dec. 12, 1978
4126767 Bottom actuated reactor control system Nov. 21, 1978
4080251 Apparatus and method for controlling a nuclear reactor Mar. 21, 1978
4075059 Reactor power reduction system and method Feb. 21, 1978
4066497 Abnormal state detecting apparatus utilizing control rod for use in nuclear reactor Jan. 3, 1978
4055463 Automatic motion inhibit system for a nuclear power generating system Oct. 25, 1977
4046625 Automatic motion inhibit system for a nuclear power generating system Sep. 6, 1977
4016034 Nuclear reactor control override system and method Apr. 5, 1977
3997767 Reactor trip on turbine trip inhibit control system for nuclear power generating system Dec. 14, 1976
3933580 Limit regulation system for pressurized water nuclear reactors Jan. 20, 1976
3933581 Control rod drive for reactor shutdown Jan. 20, 1976











 
 
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