Patents by Inventor Francesco Venneri

Francesco Venneri has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230290528
    Abstract: A mobile reactor radiation shielding solution prevents activation of structural materials to reduce a radiation dosage risk to living organisms and accelerates timetables for transport. The shielding solution can include: in-vessel neutron shield, in-vessel shadow shield, transport shield, and module shadow shield. In-vessel neutron shield reduces and prevents the activation of the structural materials and significantly reduces the need for heavy shielding to shield against the gamma emissions from activated structural materials. In-vessel shadow shield provides neutron and gamma shielding between the reactor and a balance-of-plant (BOP) module and control system. In-vessel shadow shield is placed near the active nuclear core to minimize size of the shield while maximizing the protected arc to shield radiation workers while preparing the nuclear reactor for transport. Transport shield is used during transportation when living organisms come into proximity of the reactor.
    Type: Application
    Filed: September 18, 2021
    Publication date: September 14, 2023
    Inventors: Paolo Francesco Venneri, Michael John Eades, Vishal Patel
  • Publication number: 20230207148
    Abstract: A chargeable atomic battery (CAB) and a standardized pre-irradiation encapsulation manufacturing method. A CAB unit is manufactured through a non-radioactive process and then placed in a radiation field (typically a fission reactor) to convert a portion of a non-radioactive precursor material into an activated material (e.g., radioisotope) for charging. After charging, the CAB unit is ready for use and can be combined with additional CAB units into a CAB stack to achieve the desired activity and then integrated into a CAB pack or a product that uses the radioactivity for the desired application such as heating, electricity, and passive x-ray sources. The pre-irradiation encapsulation manufacturing method uses a die press and sintering process to produce the CAB unit with the precursor material fully encapsulated by the encapsulation material. During and after the charging process, the encapsulation material serves as a barrier, preventing release of the activated material release.
    Type: Application
    Filed: February 7, 2021
    Publication date: June 29, 2023
    Inventors: Christopher Morrison, Paolo Francesco Venneri, Michael John Eades, Sarah Yue
  • Publication number: 20230197306
    Abstract: A chargeable atomic battery (CAB), such as a fully ceramic encapsulated radioactive heat source, includes a plurality of CAB units and a CAB housing to hold the plurality of CAB units. Each of the CAB units are formed of a precursor compact including precursor material particles embedded inside an encapsulation material. The precursor material particles include a precursor kernel formed of a precursor material that is initially manufactured in a stable state or an unstable state and convertible into an activated material via irradiation by a particle radiation source. The precursor material particles can include one or more encapsulation coatings surrounding the precursor kernel. The precursor material can include Neptunium-237 and the activated material can include Plutonium-238. A radioisotope thermoelectric generator can include thermoelectrics coupled to the CAB units to convert radioactive emissions of the activated material into electrical power.
    Type: Application
    Filed: September 16, 2022
    Publication date: June 22, 2023
    Inventors: Francesco Venneri, Danyal Turkoglu, Michael John Eades, Christopher Morrison, Paolo Francesco Venneri
  • Publication number: 20230170104
    Abstract: A method for producing microencapsulated fuel pebble fuel more rapidly and with a matrix that engenders added safety attributes. The method includes coating fuel particles with ceramic powder; placing the coated fuel particles in a first die; applying a first current and a first pressure to the first die so as to form a fuel pebble by direct current sintering. The method may further include removing the fuel pebble from the first die and placing the fuel pebble within a bed of non-fueled matrix ceramic in a second die; and applying a second current and a second pressure to the second die so as to form a composite fuel pebble.
    Type: Application
    Filed: January 3, 2023
    Publication date: June 1, 2023
    Inventor: Francesco Venneri
  • Publication number: 20230112687
    Abstract: To reduce size and mass of a nuclear reactor system, an integrated in-vessel shield separates the role of a neutron reflector and a neutron shield. Nuclear reactor system includes a pressure vessel including an interior wall and a nuclear reactor core located within the interior wall of the pressure vessel. Nuclear reactor core includes a plurality of fuel elements and at least one moderator element. Nuclear reactor system includes a reflector located inside the pressure vessel that includes a plurality of reflector blocks laterally surrounding the plurality of fuel elements and the at least one moderator element. Nuclear reactor system includes the in-vessel shield located on the interior wall of the pressure vessel to surround the reflector blocks. In-vessel shield is formed of two or more neutron absorbing materials. The two more neutron absorbing materials include a near black neutron absorbing material and a gray neutron absorbing material.
    Type: Application
    Filed: October 4, 2020
    Publication date: April 13, 2023
    Applicant: ULTRA SAFE NUCLEAR CORPORATION
    Inventors: Michael John EADES, Paolo Francesco VENNERI
  • Publication number: 20230051201
    Abstract: A chargeable atomic battery (CAB) includes a plurality of CAB units and a CAB housing to hold the plurality of CAB units. Each of the CAB units are formed of a precursor compact including precursor material particles embedded inside an encapsulation material. The precursor material particles include a precursor kernel formed of a precursor material that is initially manufactured in a stable state and convertible into an activated material that is an activated state via atomic irradiation by a particle radiation source. Upon the precursor material being converted, the precursor material is in a partially depleted state such that an initial portion of the precursor material is depleted and a recharge portion of the precursor material is convertible into the activated state via atomic irradiation by the particle radiation source for recharging the chargeable atomic battery.
    Type: Application
    Filed: February 7, 2021
    Publication date: February 16, 2023
    Inventors: Michael John Eades, Christopher Morrison, Paolo Francesco Venneri, Wesley Deason, Mark Reed
  • Publication number: 20230024338
    Abstract: A nuclear reactor core includes a plurality of fuel elements and a skewed-pin moderator block array of skewed-pin moderator blocks to form a nuclear reactor core inner portion and a nuclear reactor core outer portion. The nuclear reactor core inner portion includes an inner moderator matrix formed of a plurality of inner holes that include a plurality of inner fuel openings with one or more fuel elements disposed therein. The plurality of inner holes further include a plurality of inner coolant passages to flow a coolant. The nuclear reactor core outer portion includes an outer moderator matrix formed of a plurality of outer holes that include a plurality of outer fuel openings with one or more fuel elements disposed therein. The plurality of outer holes further include a plurality of outer coolant passages to flow the coolant. The inner holes are irregularly spaced with respect to the outer holes.
    Type: Application
    Filed: January 25, 2021
    Publication date: January 26, 2023
    Inventors: Mark Reed, Michael John Eades, Paolo Francesco Venneri, Vishal Patel, Wesley Deason, Richard J. Kapernick
  • Publication number: 20230023052
    Abstract: A chargeable atomic battery (CAB), such as a fully ceramic encapsulated radioactive heat source, includes a plurality of CAB units and a CAB housing to hold the plurality of CAB units. Each of the CAB units are formed of a precursor compact including precursor material particles embedded inside an encapsulation material. The precursor material particles include a precursor kernel formed of a precursor material that is initially manufactured in a stable state or an unstable state and convertible into an activated material that is an activated state via irradiation by a particle radiation source. The precursor material particles can include one or more encapsulation coatings surrounding the precursor kernel. The precursor material can include Neptunium-237 and the activated material can include Plutonium-238. A radioisotope thermoelectric generator can include thermoelectrics coupled to the CAB units to convert radioactive emissions of the activated material into electrical power.
    Type: Application
    Filed: August 12, 2022
    Publication date: January 26, 2023
    Inventors: Francesco Venneri, Danyal Turkoglu, Michael John Eades, Christopher Morrison, Paolo Francesco Venneri
  • Patent number: 11557403
    Abstract: A method for producing microencapsulated fuel pebble fuel more rapidly and with a matrix that engenders added safety attributes. The method includes coating fuel particles with ceramic powder; placing the coated fuel particles in a first die; applying a first current and a first pressure to the first die so as to form a fuel pebble by direct current sintering. The method may further include removing the fuel pebble from the first die and placing the fuel pebble within a bed of non-fueled matrix ceramic in a second die; and applying a second current and a second pressure to the second die so as to form a composite fuel pebble.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: January 17, 2023
    Assignee: Ultra Safe Nuclear Corporation
    Inventor: Francesco Venneri
  • Publication number: 20220375641
    Abstract: Passive reactivity control technologies that enable reactivity control of a nuclear thermal propulsion (NTP) system with little to no active mechanical movement of circumferential control drums. By minimizing or eliminating the need for mechanical movement of the circumferential control drums during an NTP burn, the reactivity control technologies simplify controlling an NTP reactor and increase the overall performance of the NTP system. The reactivity control technologies mitigate and counteract the effects of xenon, the dominant fission product contributing to reactivity transients. Examples of reactivity control technologies include, employing burnable neutron poisons, tuning hydrogen pressure, adjusting wait time between burn cycles or merging burn cycles, and enhancement of temperature feedback mechanisms.
    Type: Application
    Filed: July 19, 2022
    Publication date: November 24, 2022
    Inventors: Paolo Francesco Venneri, Michael John Eades
  • Publication number: 20220328202
    Abstract: A nuclear reactor system includes a nuclear reactor core disposed in a pressure vessel. Nuclear reactor system further includes control drums disposed longitudinally within the pressure vessel and laterally surrounding fuel elements and at least one moderator element of the nuclear reactor core to control reactivity. Each of the control drums includes a reflector material and an absorber material. Nuclear reactor system further includes an automatic shutdown controller and an electrical drive mechanism coupled to rotatably control the control drum. Automatic shutdown controller includes a counterweight to impart a bias and an actuator. To automatically shut down the nuclear reactor core during a loss or interruption of electrical power from a power source to the electrical drive mechanism, the actuator is coupled to the counterweight and responsive to the bias to align the absorber material of one or more control drums to face inwards towards the nuclear reactor core.
    Type: Application
    Filed: October 4, 2020
    Publication date: October 13, 2022
    Applicant: ULTRA SAFE NUCLEAR CORPORATION
    Inventors: Paolo Francesco VENNERI, Michael John EADES, Dirk UYS
  • Publication number: 20220301732
    Abstract: An enhanced architecture for a nuclear reactor core includes several technologies: (1) nuclear fuel tiles (S-Block); and (2) a high-temperature thermal insulator and tube liners with a low-temperature solid-phase moderator (U-Mod) to improve safety, reliability, heat transfer, efficiency, and compactness. In S-Block, nuclear fuel tiles include a fuel shape designed with an interlocking geometry pattern to optimize heat transfer between nuclear fuel tiles and into a fuel coolant and bring the fuel coolant in direct contact with the nuclear fuel tiles. Nuclear fuel tiles can be shaped with discontinuous nuclear fuel lateral facets and have fuel coolant passages formed therein to provide direct contact between the fuel coolant and the nuclear fuel tiles. In U-Mod, tube liners with low hydrogen diffusivity retain hydrogen in the low-temperature solid-phase moderator even at elevated temperatures and the high-temperature thermal insulator insulates the solid-phase moderator from the nuclear fuel tiles.
    Type: Application
    Filed: October 4, 2020
    Publication date: September 22, 2022
    Applicant: ULTRA SAFE NUCLEAR CORPORATION
    Inventors: Paolo Francesco VENNERI, Michael John EADES, Kelsey SOUZA, Wesley DEASON
  • Patent number: 11417437
    Abstract: Passive reactivity control technologies that enable reactivity control of a nuclear thermal propulsion (NTP) system with little to no active mechanical movement of circumferential control drums. By minimizing or eliminating the need for mechanical movement of the circumferential control drums during an NTP burn, the reactivity control technologies simplify controlling an NTP reactor and increase the overall performance of the NTP system. The reactivity control technologies mitigate and counteract the effects of xenon, the dominant fission product contributing to reactivity transients. Examples of reactivity control technologies include, employing burnable neutron poisons, tuning hydrogen pressure, adjusting wait time between burn cycles or merging burn cycles, and enhancement of temperature feedback mechanisms.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: August 16, 2022
    Assignee: Ultra Safe Nuclear Corporation
    Inventors: Paolo Francesco Venneri, Michael John Eades
  • Publication number: 20220139578
    Abstract: A composite moderator medium for nuclear reactor systems and a method of fabricating a composite moderator block formed of the composite moderator medium. The composite moderator medium includes two or more moderators, such as a low moderating material and a high moderating material. The high moderating material has a higher neutron slowing down power compared to the low moderating material. The low moderating material includes a moderating matrix of silicon carbide or magnesium oxide. The high moderating material is dispersed within the moderating matrix and includes beryllium, boron, or a compound thereof. The high moderating material is encapsulated within the low moderating material such that the high moderating material is not exposed outside of the low moderating material. The method can include selecting a sintering aid and a weight percent of the sintering aid in a composite moderator mixture based on the low moderating material and spark plasma sintering.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 5, 2022
    Inventors: Francesco Venneri, Paolo Francesco Venneri, Lance Lewis Snead
  • Patent number: 11264141
    Abstract: A composite moderator medium for nuclear reactor systems and a method of fabricating a composite moderator block formed of the composite moderator medium. The composite moderator medium includes two or more moderators, such as a low moderating material and a high moderating material. The high moderating material has a higher neutron slowing down power compared to the low moderating material. The low moderating material includes a moderating matrix of silicon carbide or magnesium oxide. The high moderating material is dispersed within the moderating matrix and includes beryllium, boron, or a compound thereof. The high moderating material is encapsulated within the low moderating material such that the high moderating material is not exposed outside of the low moderating material. The method can include selecting a sintering aid and a weight percent of the sintering aid in a composite moderator mixture based on the low moderating material and spark plasma sintering.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: March 1, 2022
    Assignee: ULTRA SAFE NUCLEAR CORPORATION
    Inventors: Francesco Venneri, Paolo Francesco Venneri, Lance Lewis Snead
  • Patent number: 11101048
    Abstract: A methodology is disclosed for compaction of a ceramic matrix of certain nuclear fuels incorporating neutron poisons, whereby those poisons aid in reactor control while aiding in fuel fabrication. Neutronic poisons are rare-earth oxides that readily form eutectics suppressing fuel fabrication temperature, of particular importance to the fully ceramic microencapsulated fuel form and fuel forms with volatile species.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: August 24, 2021
    Assignee: ULTRA SAFE NUCLEAR CORPORATION
    Inventor: Francesco Venneri
  • Publication number: 20210210235
    Abstract: A method for producing microencapsulated fuel pebble fuel more rapidly and with a matrix that engenders added safety attributes. The method includes coating fuel particles with ceramic powder; placing the coated fuel particles in a first die; applying a first current and a first pressure to the first die so as to form a fuel pebble by direct current sintering. The method may further include removing the fuel pebble from the first die and placing the fuel pebble within a bed of non-fueled matrix ceramic in a second die; and applying a second current and a second pressure to the second die so as to form a composite fuel pebble.
    Type: Application
    Filed: November 24, 2020
    Publication date: July 8, 2021
    Applicant: ULTRA SAFE NUCLEAR CORPORATION
    Inventor: Francesco VENNERI
  • Patent number: 10878971
    Abstract: A method for producing microencapsulated fuel pebble fuel more rapidly and with a matrix that engenders added safety attributes. The method includes coating fuel particles with ceramic powder; placing the coated fuel particles in a first die; applying a first current and a first pressure to the first die so as to form a fuel pebble by direct current sintering. The method may further include removing the fuel pebble from the first die and placing the fuel pebble within a bed of non-fueled matrix ceramic in a second die; and applying a second current and a second pressure to the second die so as to form a composite fuel pebble.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: December 29, 2020
    Assignee: ULTRA SAFE NUCLEAR CORPORATION
    Inventor: Francesco Venneri
  • Publication number: 20200273588
    Abstract: Passive reactivity control technologies that enable reactivity control of a nuclear thermal propulsion (NTP) system with little to no active mechanical movement of circumferential control drums. By minimizing or eliminating the need for mechanical movement of the circumferential control drums during an NTP burn, the reactivity control technologies simplify controlling an NTP reactor and increase the overall performance of the NTP system. The reactivity control technologies mitigate and counteract the effects of xenon, the dominant fission product contributing to reactivity transients. Examples of reactivity control technologies include, employing burnable neutron poisons, tuning hydrogen pressure, adjusting wait time between burn cycles or merging burn cycles, and enhancement of temperature feedback mechanisms.
    Type: Application
    Filed: March 13, 2020
    Publication date: August 27, 2020
    Inventors: Paolo Francesco VENNERI, Michael John EADES
  • Patent number: 10643754
    Abstract: Passive reactivity control technologies that enable reactivity control of a nuclear thermal propulsion (NTP) system with little to no active mechanical movement of circumferential control drums. By minimizing or eliminating the need for mechanical movement of the circumferential control drums during an NTP burn, the reactivity control technologies simplify controlling an NTP reactor and increase the overall performance of the NTP system. The reactivity control technologies mitigate and counteract the effects of xenon, the dominant fission product contributing to reactivity transients. Examples of reactivity control technologies include, employing burnable neutron poisons, tuning hydrogen pressure, adjusting wait time between burn cycles or merging burn cycles, and enhancement of temperature feedback mechanisms.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: May 5, 2020
    Assignee: Ultra Safe Nuclear Corporation
    Inventors: Paolo Francesco Venneri, Michael John Eades