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Class Information
Number: 976/DIG.139
Name: Nuclear technology > Emergency protection arrangements structally associated with the reactor (e.g., safety valves provided with pressure equalization devices) [g21c-9/00] *** (emergency cooling arrangements dig. 196)
Description:










Sub-classes under this class:

Class Number Class Name Patents
976/DIG.144 Against explosions (e.g., blast shields) [g21c-9/00f] 15
976/DIG.145 Against na- or ka- reactions [g21c-9/00i] 3
976/DIG.143 Core catchers [g21c-9/00d] 32
976/DIG.146 Means for effecting very rapid reduction of the reactivity factor under fault conditions (e.g., reactor fuse, control elements having arrangements activated in an emergency) [g21c-9/02] *** (control elements, per se, dig. 113+) 32
976/DIG.151 Means for suppressing fires; earthquake protection [g21c-9/04] 23
976/DIG.140 Pressure suppression [g21c-9/00b] 28


Patents under this class:

Patent Number Title Of Patent Date Issued
5087410 Method of avoiding localized hydrogen build-ups in safety tanks of reactors Feb. 11, 1992
5011653 High temperature reactor utilizing a graphite reflector Apr. 30, 1991
4936878 Method for cleansing gas and apparatus herefor Jun. 26, 1990
4900506 High-temperature reactor Feb. 13, 1990
4836443 Temperature-dependent pressure release device for pressure vessels Jun. 6, 1989
4797249 Process for precluding or reducing the danger to a system and the surroundings thereof by reactive mixtures Jan. 10, 1989
4693279 Device for removably fixing an internal structure to a circular wall inside an envelope Sep. 15, 1987
4687625 Piping of nuclear reactor containment vessel Aug. 18, 1987
4666657 Remotely adjustable intermediate seismic support May. 19, 1987
4663116 Nuclear reactor May. 5, 1987
4657727 Fission product barrier emergency event classification and response system Apr. 14, 1987
4654965 Method of manufacturing liquid crystal display unit Apr. 7, 1987
4654191 Pressure release arrangement for the safety containment of a pressurized water nuclear reactor Mar. 31, 1987
4631164 Nuclear power station with a containment Dec. 23, 1986
4609523 Passive pH adjustment of nuclear reactor containment flood water Sep. 2, 1986
4601873 Method of avoiding or inhibiting intermixing of the atmosphere which exists in an enclosed space with a gaseous substance present in the same space Jul. 22, 1986
4582672 Method and apparatus for preventing inadvertent criticality in a nuclear fueled electric powering generating unit Apr. 15, 1986
4495137 Nuclear reactor Jan. 22, 1985
4425495 Ignitor and enclosure structure Jan. 10, 1984
4400345 Nuclear boiler with concentric tubes and removable safety sleeve Aug. 23, 1983
4314882 Device for actuating a nuclear reactor control rod Feb. 9, 1982
4304633 Nuclear power plant Dec. 8, 1981
4277310 Water-cooled nuclear reactor Jul. 7, 1981
4221234 Closure valves for use in coaxial flow systems Sep. 9, 1980
4210614 Passive containment system Jul. 1, 1980
4130459 Poison and diluent system for nuclear power plants Dec. 19, 1978
4102739 Method of shielding a liquid-metal-cooled reactor Jul. 25, 1978
4080252 Nuclear reactor core cooling arrangement Mar. 21, 1978
4077837 Pressurized-water reactor coolant pipe containment Mar. 7, 1978
4071403 Method and apparatus for protecting the core of a nuclear reactor Jan. 31, 1978
4050983 Passive containment system Sep. 27, 1977
4043868 Water-cooled nuclear reactor with loss-of-coolant protection Aug. 23, 1977
4036561 Primary coolant pump for nuclear reactors Jul. 19, 1977
4035232 Closure system Jul. 12, 1977
4028176 Nuclear reactor installation Jun. 7, 1977
3998693 Thermal margin control Dec. 21, 1976
3997394 Fuel assembly supporting structure Dec. 14, 1976
3994776 Nuclear reactor installation Nov. 30, 1976
3984282 Passive containment system for a nuclear reactor Oct. 5, 1976
3937255 Safety equipment for installations under pressure Feb. 10, 1976











 
 
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