Matches 151 - 200 out of 222 < 1 2 3 4 5 >
Match Document Document Title
4280871 Live steam shut-off device for pressurized water reactors  
Shut-off device for a double-wall steam line extending out of a safety vessel of a pressurized water reactor includes a shut-off valve having a casing, the casing being directly connected to an end...
4252611 Pressure suppression apparatus of a nuclear power plant  
In pressure suppression apparatus of a nuclear reactor of the type comprising a vessel surrounding a reactor pressure vessel and containing a water pool at the bottom of the vessel, and a steam...
4238289 Nuclear reactor condenser door arrangement  
A generally annular condenser compartment of a nuclear reactor containment structure contains a large quantity of fusible material in a solid state, such as ice, for absorbing the energy released...
4235671 Nuclear energy installation having a gas-cooled reactor core  
A nuclear energy installation having at least one gas collecting chamber so divided through the intermediary of separator walls that the gas conduits and/or gas distributors of each cooling gas...
4213824 Nuclear steam system containment  
An improved containment for radiation shielding and pressure suppression is presented. The arrangement, which is particularly suited for marine propulsion application, includes, in a preferred...
4186051 Nuclear energy plant with improved device for removing after-heat and emergency heat  
Nuclear energy installation includes a nuclear reactor core, a primary circulatory loop connected to the reactor core and having a circulating liquid metal medium therein heated by the reactor...
4167968 Pressure vessel  
A heat exchanger including a pressure vessel and a plurality of heat exchanger tubes extending within the vessel. A tube shroud forms an annular passage between the tubes and the pressure vessel...
4157939 Pressurized-water reactor emergency core shutdown  
A pressurized-water reactor installation comprises a pressure vessel containing a core, a main reactor coolant system formed by one or more main coolant loops which are each formed by a steam...
4151689 Nuclear engineering installation  
Nuclear engineering installation having a concrete tank enclosing activity-carrying components of the installation, the concrete tank being covered by a hill formed of earth, includes means for...
4139413 Blow-off device for limiting excess pressure in nuclear power plants, especially in boiling water nuclear power plants  
In a blow-off device for limiting excess pressure in nuclear power plants, at least one condensation tube disposed so that a lower outflow end thereof is immersed in a volume of water in a...
4131509 Pressure relief device for a nuclear reactor containment building  
A reactor building has equipment rooms wherein a nuclear reactor, steam generators and circulating pumps are disposed, and has operating rooms separated from the equipment rooms by ceilings and...
4126515 Nuclear reactor cavity streaming shield  
The upper portion of a nuclear reactor vessel supported in a concrete reactor cavity has a structure mounted below the top of the vessel between the outer vessel wall and the reactor cavity wall...
4086308 Pressurized relief tank for steam  
A pressurizer relief or surge tank for connection with the pressurizer of a pressurized-water coolant system, has the usual tank partly filled with water and with a pressurized-gas cushion above...
4072170 Pressure-relieving device for steam generators and the like  
The pressure in a high-pressure steam boiler or other pressure fluid tank is occasionally relieved by means of a discharge device having a pressure-relief valve mounted on an ejection conduit...
4064001 Hot leg relief system  
A system is provided for the relief of excess pressure from the hot leg of a nuclear reactor to the cold leg on the occurrence of a loss of coolant accident. This system includes a conduit...
4064003 Rupture disc  
The intermediate heat transport system for a sodium-cooled fast breeder reactor includes a device for rapidly draining the sodium therefrom should a sodium-water reaction occur within the system....
4061535 Industrial technique  
An illustrative embodiment of the invention provides pressure relief valve means for the core support cylinder of a nuclear reactor vessel during a failure or accident of the nuclear reactor...
4056436 System for mitigating the effects of an accident at a nuclear power plant  
A system for mitigating the effects of an accident, such as loss of coolant, at a nuclear power plant, comprising a first container accommodating a nuclear reactor and its primary cooling system,...
4032397 Burst shield containment for nuclear reactor and method of operating same  
A pressurized nuclear-reactor core is surrounded by an inspection cavity, and a burst shield with a side wall, a bottom and a cover. The inspection cavity is filled with a removable zero-path...
4028179 Nuclear reactor core safety device  
The danger of a steam explosion from a nuclear reactor core melt-down can be greatly reduced by adding a gasifying agent to the fuel that releases a large amount of gas at a predetermined...
4022655 Device for limiting accidental pressure overloads in a nuclear reactor confinement structure  
In a reactor confinement structure comprising a thin-walled inner reactor enclosure, a thick-walled outer enclosure, and an intermediate space containing water and an air cushion above the water, a...
4019955 Vessel steam relief system for a nuclear reactor  
A system is provided for the relief of excess pressure from the region above the nuclear reactor core to the cold leg on the occurrence of a loss of coolant accident. This system includes a series...
3994776 Nuclear reactor installation  
A nuclear reactor installation includes a pressurized-water coolant reactor vessel and a concrete biological shield surrounding this vessel. The shield forms a space between it and the vessel large...
3937651 Nuclear reactor facility  
A pressurized-water reactor pressure vessel connects via a main coolant pipe loop including a main coolant pump, with the lower portion of at least one vertical steam generator horizontally offset...
3932212 Apparatus and method for depressurizing, degassing and affording decay of the radioactivity of weakly radioactive condensates in nuclear power plants  
Apparatus for depressurizing, degassing and affording decay of weakly radioactive condensates in nuclear power plants having a turbine, and a main condenser turbine wherein exhaust steam of the...
3930939 Pressure suppression system for a nuclear reactor  
A gas-coolant nuclear breeder reactor includes a core enclosed by a pressure vessel having a bottom beneath the core potentially capable of burning through if the core melts due to excessive...
3924675 Energy absorber for sodium-heated heat exchanger  
A heat exchanger in which water-carrying tubes are heated by liquid sodium and in which the results of accidental contact between the water and the sodium caused by failure of one or more of the...
3899391 Containment vessel construction for nuclear power reactors  
A nuclear containment vessel houses an inner reactor housing structure whose outer wall is closely spaced from the inner wall of the containment vessel. The inner reactor housing structure is...
3889707 Pressure relief system for a nuclear reactor  
A pressure relief and secondary containment system is described for containing an increase in pressure without leaking contaminants to the ambient atmosphere. A first containment enclosure is...
3865688 Passive containment system  
A containment system that provides complete protection entirely by passive means for the loss of coolant accident in a nuclear power plant and wherein all stored energy released in the coolant...
3859166 COMBINED STORAGE TANK AND SUMP FOR NUCLEAR REACTOR  
A combined coolant storage tank and sump located within the containment structure which surrounds and isolates the nuclear reactor. The combined tank and sump provides a means for storing a supply...
3847735 NUCLEAR REACTOR SAFETY SYSTEM  
An improvement in the method and apparatus for suppressing vapor pressure buildup within a nuclear reactor containment structure housing a pressurized water nuclear reactor and steam generating...
3837308 FLOATING POWER PLANT  
A floating power plant is housed in a generally spherical double-walled shell. The shell and its contents form part of a compound pendulum whose center of mass is located below the metacenter of...
3825084 SHUT-OFF MECHANISM FOR LOW PRESSURE LINES CONNECTED TO HIGH PRESSURE LINES IN NUCLEAR REACTORS  
A control mechanism is disclosed for shutting off a low pressure liquid or gas line connected to a high pressure line. The control mechanism may be comprised of a piston controlled check valve...
3718539 PASSIVE NUCLEAR REACTOR SAFEGUARD SYSTEM  
A safeguard system for a nuclear power plant is disclosed that incorporates means for containing the effects of a reactor accident to protect the environs of the plant against the release of...
3710556 PROTECTED PRESSURE RELEASE VALVE  
Means to release excessive pressure in a pressure vessel containing gas in which denser material is entrained. A separator is placed between a pressure release valve and the pressure vessel to...
3668069 PRESSURE SUPPRESSION CONTAINMENT FOR A LIQUID-COOLED NUCLEAR REACTOR  
Containment apparatus and a pressure suppression system for a liquid-cooled nuclear reactor. The apparatus includes a safety container formed by a spherical pressure shell and a condensation...
3665958 VENT CLOSURE DEVICE  
A hinged cover for a vent opening with safety features to insure reliability of operation in remote and critical applications, such as nuclear reactors. Means are provided for opening the cover...
3599589 EARTHQUAKE-RESISTANT NUCLEAR REACTOR STATION  
A floating structure for the protection of nuclear reactors from damage during earthquake shock wherein the structure is designed to absorb shocks without rupture of critical nuclear reactor...
3583479 PRESSURE RELIEF DEVICES  
In combination with a heat exchanger of the tube-in-shell type in which water/steam flows in the tubes and a liquid metal such as sodium flows in the closed shell and over the tubes, a safety...
3513070 NUCLEAR POWER PLANT CONTAINING AT LEAST ONE LIGHT WATER NUCLEAR REACTOR AND ONE HEAVY WATER NUCLEAR REACTOR  
3494828 NUCLEAR REACTOR DIRECT PRESSURE SUPPRESSION CONTAINMENT  
3454466 NUCLEAR REACTOR CONTAINMENT SYSTEM FOR METROPOLITAN SITES  
3453176 MEANS FOR CONDENSING STEAM LIBERATED WITHIN A CLOSED SPACE  
3397113 Modular suppression tanks for nuclear containment structures  
3378456 Jet pumping means for a nuclear reactor  
3375171 Boiling heavy water reactor  
3375162 Nuclear reactor containment system and relief valve  
3321374 Containment system for pressurized nuclear reactor installation  
3312596 Nuclear reactor system with internal pressurizer  
Matches 151 - 200 out of 222 < 1 2 3 4 5 >