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公开(公告)号：US10726964B2
公开(公告)日：2020-07-28
申请号：US16275640
申请日：2019-02-14
摘要： A system usable in a nuclear environment provides a reservoir of liquefied breathable gas in fluid communication with a deployment system. The deployment system uses a stream of the breathable gas from the reservoir to operate a gas turbine which runs an electrical generator that is mechanically connected therewith to generate electrical power that is stored in a battery bank. The stream of breathable gas then flows from the turbine and is split between a heat exchanger that is situated in heat exchange relation with the interior region of the main control room and an outlet that provides breathable gas to the control room. The portion of the stream that flows through the heat exchanger cools the main control room. The other portion of the stream that provides breathable gas to the main control room also recirculates the atmosphere in the control room.
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公开(公告)号：US10460844B2
公开(公告)日：2019-10-29
申请号：US15590469
申请日：2017-05-09
发明人： Yasir Arafat , Jurie Van Wyk
摘要： A nuclear reactor containment system including a nuclear reactor and a container enclosing the nuclear reactor. The container includes a number of heat removal systems each having an active state and an inactive state, wherein the heat removal systems dissipate heat from the container more efficiently in the active state than in the inactive state, and wherein the heat removal systems are structured to switch from the inactive state to the active state based on a temperature of the container.
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公开(公告)号：US10128006B2
公开(公告)日：2018-11-13
申请号：US14880564
申请日：2015-10-12
发明人： Yasir Arafat , Jeffrey T. Dederer , Adam Torrance
摘要： An emergency spent nuclear fuel pool cooling system that requires no external electrical power source and relies on the expansion of a cryogenic fluid through an evaporator/heat exchanger submerged within the spent fuel pool, to power various components used to cool the spent fuel pool and adjacent areas and provide makeup water to the spent fuel pool. Other than the evaporator/heat exchanger to which the cryogenic fluid is connected, the remaining components employed to cool the pool and the surrounding area and provide makeup water can be contained in a relatively small, readily transportable skid.
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公开(公告)号：US10283227B2
公开(公告)日：2019-05-07
申请号：US14965120
申请日：2015-12-10
摘要： A system usable in a nuclear environment provides a reservoir of liquefied breathable gas in fluid communication with a deployment system. The deployment system uses a stream of the breathable gas from the reservoir to operate a gas turbine which runs an electrical generator that is mechanically connected therewith to generate electrical power that is stored in a battery bank. The stream of breathable gas then flows from the turbine and is split between a heat exchanger that is situated in heat exchange relation with the interior region of the main control room and an outlet that provides breathable gas to the control room. The portion of the stream that flows through the heat exchanger cools the main control room. The other portion of the stream that provides breathable gas to the main control room also recirculates the atmosphere in the control room.
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公开(公告)号：US20190096536A1
公开(公告)日：2019-03-28
申请号：US16145933
申请日：2018-09-28
发明人： Yasir Arafat , Jurie J. Van Wyk
摘要： This invention provides a nuclear reactor design that can enable automated or semi-automated manufacturing of a small reactor in a mechanized factory. This is possible by following a layered approach to combine simple “plate” geometries with the use of diffusion bonding and computer aided manufacturing techniques that integrate all the fuel, axial reflectors, axial gamma and neutron shields, fuel gas plenum, heat removal mechanism, primary heat exchangers and moderator all in one block or component. The final assembled block has no welds and limits or eliminates manual operations. This design has the potential to reduce the fabrication time of an entire nuclear reactor to just a few days.
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公开(公告)号：US11373766B2
公开(公告)日：2022-06-28
申请号：US17005457
申请日：2020-08-28
发明人： John L. Lyons , Yasir Arafat , Jurie Van Wyk , Luke D. Czerniak , James L. Yankel , Matthew R. Heisel
摘要： A rotation apparatus is usable with a control drum in a nuclear environment. The control drum is situated on a shaft that is rotatable about a horizontal axis of rotation, and the control drum includes an absorber portion and a reflector portion. The rotation apparatus includes a rotation mechanism that is structured to apply to the shaft in an operational position a force that biases the shaft to rotate toward a shutdown position, with the force being resisted by a motor to retain the shaft in the operational position when the motor is powered. The force is not resisted when the motor is unpowered. The rotation apparatus further includes a rotation management system that controls the rotation of the shaft.
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公开(公告)号：US11289215B2
公开(公告)日：2022-03-29
申请号：US16711922
申请日：2019-12-12
发明人： Yasir Arafat
摘要： A system for use in shutting down a nuclear reactor includes a housing that defines a region therein sealed from an ambient environment and a gate member disposed within the region in a manner such that the gate member segregates the region into a first compartment and a second compartment isolated from the first compartment. The gate member is formed from a material having a predetermined melting point. The system further includes a neutron absorbing material disposed within the first compartment and a dispersion mechanism disposed within the region. The dispersion mechanism structured to encourage the neutron absorbing material from the first compartment into the second compartment.
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公开(公告)号：US10510450B2
公开(公告)日：2019-12-17
申请号：US15701477
申请日：2017-09-12
发明人： Yasir Arafat , Jurie Van Wyk , Edward J. Lahoda
摘要： A molten salt reactor includes a containment vessel, a reactor core, a neutron reflector spaced from the containment vessel, and liquid fuel enclosed within the core. The liquid fuel is comprised of a nuclear fission material dissolved in a molten salt. A heat exchanger is positioned external to the containment vessel. A plurality of heat transfer pipes are provided for transferring heat from the core to the heat exchanger. Each pipe has a first and a second end. The first end of each pipe is positioned within the reactor core for absorbing heat from the fuel. The heat exchanger receives the second end of each heat transfer pipe. At least two or more reactor shut down systems are provided. At least one shut down system may be a passive system and at least one or both shut down systems may be an active or a manually operated system.
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公开(公告)号：US11923099B2
公开(公告)日：2024-03-05
申请号：US17098603
申请日：2020-11-16
发明人： Yasir Arafat , John L. Lyons
IPC分类号： G21C19/317 , B01D53/86 , B01J12/00 , G21C9/06 , F02M27/02
CPC分类号： G21C9/06 , B01D53/8671 , B01J12/007 , G21C19/317 , B01D2257/108 , F02M27/02 , Y02E30/30
摘要： An igniter apparatus which generates a high speed buoyancy induced vortex to funnel hydrogen and air from the surrounding onto the “igniter core” where an “igniter core” heats up to the auto ignition temperature by the exothermic catalytic oxidation of hydrogen on its surface. Water (vapor) is formed as the product, which inhibits the oxidation reaction, if not stripped away from the catalyst surface. The high velocity of the vortex ensures the stripping of the boundary layer of steam that is formed by the reaction, thus ensuring more active sites are available for hydrogen oxidation. The vortex is formed by channeling an upward draft into a vortex by guided fins. The upward draft is formed by a plate, which is also coated with a hydrogen recombination catalyst. The plate becomes hot by the same catalytic oxidation reaction in the presence of air containing hydrogen.
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公开(公告)号：US11300359B2
公开(公告)日：2022-04-12
申请号：US16729684
申请日：2019-12-30
摘要： A block style heat exchanger for a heat pipe reactor having a plurality of heat pipes extending from a reactor core. The heat exchanger includes a plurality of primary channels, each for receiving heat transferred from the core via one of the heat pipes. The primary channels extending within a block of one or more materials. The heat exchanger also includes a plurality of secondary channels defined within the block for transmitting a flow of the secondary heat transfer medium through the heat exchanger from an inlet to an outlet. The block is formed from one or both of: a plurality of plates bonded together, with each plate defining at least a portion of one or more of the plurality of primary channels and/or the plurality of secondary channels, and/or a unitary piece of material formed from an additive manufacturing process.
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