Company: GIGGU
Filing Date: 2025-11-12
Form Type: S-4
Source: 0001193125-25-277896
Chunk: 498

Company: GigCapital7 Corp.
Filing Date: 2025-11-12
Form: S-4
Chunk 498
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 design principles. Key design features and intended advantages of our MMR technology include:

| • |     | 10-Year Fuel Cycle: Each Hadron Halo is designed to run continuously for 10 years without refueling. Compared to the 18-24 month refueling cycle required for conventional large reactors, the Hadron Halo would eliminate approximately 5-6 refueling outages over a decade. The Hadron Halo’s 10-year sealed core greatly reduces fuel handling, operational complexity, and logistical support compared with conventional large LWR fuel management. |

| • |     | Factory Fabrication: The Hadron Halos and primary components are being designed for serial production in a factory setting. We anticipate that each Hadron Halo unit will be built, assembled, and tested in under 12 months in the factory, after which it will be shipped to the site as a turnkey product. This timeline stands in stark contrast to traditional gigawatt -scale plants that have historically required intensive on-site construction steps, including nuclear-grade concrete placement, piece-by-piece assembly, and critical welding projects. Factory production of the Hadron Halo is expected to improve quality control and enable accelerated build-outs of installed electricity-generating capacity. |

Hadron Energy Assembly Line Illustration

| • |     | Integral Design: All of the Hadron Halo’s primary loop components are housed within the reactor pressure vessel, including the reactor core, primary coolant pumps, steam generator, and the pressurizer. This integral design allows more assembly to take place within the factory, minimizing the number of separate components that must be shipped to the site for installation. Our design also significantly reduces the possibility of a so-called large-break loss of coolant accident, an accident scenario in which a large rupture in the coolant system causes a rapid loss of coolant, potentially leading to overheating. In conventional designs where major coolant piping is external, this is a significant risk. Our integral design mitigates this risk, making a large rupture unlikely and ensuring potential effects are safely contained within the vessel. |

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| • |     | Modular Deployment: Our modular deployment design minimizes heavy civil works, eliminating the need for specialized on-site construction of a nuclear island, which is typical for conventional large LWRs. The MMR will arrive essentially ready to connect and provide power to the public electrical grid or the customer’s electrical system. A site could potentially go from groundbreaking to operation within 12–18 months of equipment delivery. |

| • |     | Transportability and Modular Deployment: The entire Hadron