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Class Information
Number: 376/277
Name: Induced nuclear reactions: processes, systems, and elements > Reactor protection or damage prevention
Description: Subject matter for reducing undesired effects resulting from the operation, malfunction, or failure of a nuclear fission reactor component.

Sub-classes under this class:

Class Number Class Name Patents
376/298 Auxiliary heat removal structure 172
376/278 By minimizing positive coolant void coefficient 3
376/280 Core catchers 80
376/302 Core restraint means 86
376/305 Corrosion or damage prevention 222
376/282 Emergency core coolant systems (e.g., injecting coolant into reactor or pipe systems) 213
376/285 Expansion means (e.g., shock absorbers, roller bearings) 220
376/279 Fire extinguishing or prevention 13
376/281 Fluid flow reversal protection 33
376/283 Pressure suppression and relief 206
376/300 Recombiners 34
376/287 Shield or barrier between radiation or heat source and object to be protected (e.g., insulation, thermal shield) 212
376/307 With pressurizer means 68
376/297 With turbine protection means (e.g., turbine trip or overspeed protection means) 12

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8711998 Cooling structure and cooling method for control rod drive mechanism and nuclear reactor Apr. 29, 2014
8712002 Nuclear reactor building and construction method thereof Apr. 29, 2014
8705684 Renew process implementation for reactor bottom head Apr. 22, 2014
8693610 System and method for implementing unified computer-based management of fire safety-related risk and compensatory measures management in nuclear power plants Apr. 8, 2014
8681925 Nuclear power plant, method of forming corrosion-resistant coating therefor, and method of operating nuclear power plant Mar. 25, 2014
8681923 Method of manufacturing core shroud for nuclear power plant and structure of nuclear power plant Mar. 25, 2014
8681924 Single-plate neutron absorbing apparatus and method of manufacturing the same Mar. 25, 2014
8675806 Dielectric coating for surfaces exposed to high temperature water Mar. 18, 2014
8670518 Fully passive decay heat removal system for sodium-cooled fast reactors that utilizes partially immersed decay heat exchanger Mar. 11, 2014
8630385 Emergency core cooling duct for emergency core cooling water injection of a nuclear reactor Jan. 14, 2014
8599989 Modular reactor head area assembly Dec. 3, 2013
8588360 Evacuated containment vessel for a nuclear reactor Nov. 19, 2013
8576975 Protection of reactor cores from unstable density wave oscillators Nov. 5, 2013
8565366 Methods and apparatuses for operating and repairing nuclear reactors Oct. 22, 2013
8559584 Nuclear reactor automatic depressurization system Oct. 15, 2013
8548113 Debris mitigation upper tie plates and fuel bundles using the same Oct. 1, 2013
8537959 Drain sump of nuclear reactor containment vessel Sep. 17, 2013
8532245 Core shroud corner joints Sep. 10, 2013
8509376 Nuclear engineering plant and closure apparatus for its containment Aug. 13, 2013
8483348 Method of providing a hold-down force upon a nuclear fuel assembly Jul. 9, 2013
8477900 Hold-down spring unit for top nozzle of nuclear fuel assembly having improved hold-down performance and top nozzle for nuclear fuel assembly having the same Jul. 2, 2013
8477899 Method for operating a reactor of a nuclear plant Jul. 2, 2013
8462910 Neutron shield Jun. 11, 2013
8437446 Steam generator flow by-pass system May. 7, 2013
8433030 Crystal habit modifiers for nuclear power water chemistry control of fuel deposits and steam generator crud Apr. 30, 2013
8433029 Determination of safety limit minimum critical power ratio Apr. 30, 2013
8416911 Nuclear reactor cavity arrangements for ice condenser plants Apr. 9, 2013
8401142 Nuclear reactor vessel fuel thermal insulating barrier Mar. 19, 2013
8396182 Method and apparatus to shield a nuclear fuel assembly with removable debris shield in upper tie Mar. 12, 2013
8358732 Core catcher, manufacturing method thereof, reactor containment vessel and manufacturing method thereof Jan. 22, 2013
8335292 Jet pump diffuser weld repair device and method Dec. 18, 2012
8311179 Methods for stabilizing a steam dryer assembly in a nuclear reactor pressure vessel Nov. 13, 2012
8311178 pH adjusting apparatus Nov. 13, 2012
8270556 Apparatus for forming stress corrosion cracks Sep. 18, 2012
8249212 Method to apply a clamp to a core spray sparger T-box Aug. 21, 2012
8233581 Process for adding an organic compound to coolant water in a pressurized water reactor Jul. 31, 2012
8191406 Method and device for pretreating a fuel rod cladding tube for material tests, test body and method for testing corrosion characteristics Jun. 5, 2012
8194815 Apparatus and system for dampening the vibration experienced by an object Jun. 5, 2012
8160197 Nuclear power plant using nanoparticies in closed circuits of emergency systems and related method Apr. 17, 2012
8149983 Method for analysis of pellet-cladding interaction Apr. 3, 2012
8149981 Methods and devices relating to a nuclear light water reactor of the boiling water kind Apr. 3, 2012
8116422 LWR flow channel with reduced susceptibility to deformation and control blade interference under exposure to neutron radiation and corrosion fields Feb. 14, 2012
8077824 Support arrangement Dec. 13, 2011
8068575 Acoustic load mitigator Nov. 29, 2011
8043448 Non-heat treated zirconium alloy fuel cladding and a method of manufacturing the same Oct. 25, 2011
8045671 Injection system and associated operating method Oct. 25, 2011
8040997 PH adjusting system and PH adjusting method Oct. 18, 2011
8036335 Thermal load reducing system for nuclear reactor vessel Oct. 11, 2011
7949084 Passive cooling and arresting device for molten core material May. 24, 2011
7920666 Safety injection tank with gravity driven fluidic device Apr. 5, 2011

1 2 3 4

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