Company: GIGGU
Filing Date: 2025-11-12
Form Type: S-4
Source: 0001193125-25-277896
Chunk: 509

Company: GigCapital7 Corp.
Filing Date: 2025-11-12
Form: S-4
Chunk 509
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 for the full lifetime, support our safety analysis by demonstrating that core damage and radioactive material release will not occur in accident conditions and show that the nuclear chain reaction can be controlled at all times. |

| • | Reactor Mechanical Simulation: Through a comprehensive suite of simulations, we will validate that the reactor module can withstand the most extreme mechanical stresses. Specifically, we will conduct seismic and structural simulations to confirm the reactor can survive the Design Basis Earthquake (DBE)—the largest hypothetical earthquake realistically expected at a site—without losing its ability to shut down safely or maintain core integrity. We will also perform transportation simulations to validate that the reactor module can tolerate the shock and vibration encountered during shipping to a diverse range of deployment environments. These combined efforts are essential to ensure the design not only meets performance goals but is also practical, safe, and robust for real-world deployment. |

| • | Modular Balance-of-Plant (BOP) Prototyping: We are partnered with an established engineering firm to develop prototype systems for the balance-of-plant (non-nuclear components such as turbine generator, heat exchangers, cooling systems) in a modular skid format. A pilot assembly of the balance-of-plant will be constructed to validate that all components can fit in standard shipping container dimensions and to test the quick-connect features for on-site installation. This prototyping effort will inform the final design of our deployable balance-of-plant kit. |

| • |     | Licensing Readiness and Safety Analysis: We are preparing our NRC license application documents, including conducting a Probabilistic Risk Assessment (PRA) of the Hadron Halo’s design to quantify potential risks. This helps demonstrate the Hadron Halo’s safety case (Core Damage Frequency or CDF and Large Early Release Fraction or LERF) and identify any design changes needed to reduce risk. We are also engaging in pre-application meetings with the NRC to clarify requirements and align on novel aspects of our design (such as transportable fuel cartridges). |

We expect that our R&D spending will total approximately $100 million through 2030 to align efforts in completing our NRC 10 CFR Part 52 ML, COL, and building our FOAK unit. These costs include engineering design work, prototype fabrication, testing programs, and licensing support. We intend to capitalize certain development costs associated with building the first group of Hadron Halos because such units will be used for testing and demonstration. 290

Our focused R&D approach, including utilizing partnerships with national labs, universities, and suppliers and