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Preliminary Evaluation of Joint Electricity-Hydrogen Concept of Operations

Thomas A. Ulrich, Roger Lew, Anna Hall, Stephen Hancock, Heather Medema, Jooyoung Park, Torrey Mortenson, Tyler Westover, Ronald L. Boring

Nuclear Technology / Volume 212 / Number 5 / May 2026 / Pages 1335-1349

Research Article / dx.doi.org/10.1080/00295450.2025.2492956

Received:June 11, 2024
Accepted:April 5, 2025
Published:May 8, 2026

An initial thermal power dispatch (TPD) concept of operations was evaluated that couples a nuclear power plant to a nearby hydrogen production plant. GSE Systems’ generic pressurized water reactor full-scope simulator was modified with a TPD model comprised of a thermal power extraction and delivery system. A prototype human-system interface (HSI) was developed to interact with the TPD model and allow participants to execute the basic operating scenarios for normal operations. Four retired operators performed the evaluation, and due to COVID-19 travel restrictions, the original in-person experimental design was restructured to support a remote participator evaluation using a web meeting platform. Data from operator feedback, observations from the research team, and quantitative survey responses revealed that the initial TPD concept of operations is feasible. The operators were comfortable with the engineered system and HSI and could manage it without adverse impacts to reactor power, plant safety, or equipment. Findings are discussed in terms of both the TPD system design and HSI performance.