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Fusion Science and Technology
August 2025
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From operator to entrepreneur: David Garcia applies outage management lessons
David Garcia
If ComEd’s Zion plant in northern Illinois hadn’t closed in 1998, David Garcia might still be there, where he got his start in nuclear power as an operator at age 24.
But in his ninth year working there, Zion closed, and Garcia moved on to a series of new roles—including at Wisconsin’s Point Beach plant, the corporate offices of Minnesota’s Xcel Energy, and on the supplier side at PaR Nuclear—into an on-the-job education that he augmented with degrees in business and divinity that he sought later in life.
Garcia started his own company—Waymaker Resource Group—in 2014. Recently, Waymaker has been supporting Holtec’s restart project at the Palisades plant with staffing and analysis. Palisades sits almost exactly due east of the fully decommissioned Zion site on the other side of Lake Michigan and is poised to operate again after what amounts to an extended outage of more than three years. Holtec also plans to build more reactors at the same site.
For Garcia, the takeaway is clear: “This industry is not going away. Nuclear power and the adjacent industries that support nuclear power—and clean energy, period—are going to be needed for decades upon decades.”
In July, Garcia talked with Nuclear News staff writer Susan Gallier about his career and what he has learned about running successful outages and other projects.
Eric P. Robertson, Michael G. McKellar, Lee O. Nelson
Fusion Science and Technology | Volume 61 | Number 1 | January 2012 | Pages 452-457
Other Concepts and Assessments | Proceedings of the Fifteenth International Conference on Emerging Nuclear Energy Systems | doi.org/10.13182/FST12-A13462
Articles are hosted by Taylor and Francis Online.
This paper evaluates the integration of a high-temperature gas-cooled reactor (HTGR) to an in situ oil shale retort operation producing 7950 m3/D (50,000 bbl/day). The large amount of heat required to pyrolyze the oil shale and produce oil would typically be provided by combustion of fossil fuels, but can also be delivered by an HTGR. Two cases were considered: a base case which includes no nuclear integration, and an HTGR-integrated case.The HTGR was assumed to be physically located near the oil shale operation such that heat losses during surface transport of the heating fluid were negligible. Transferring the required retort heat for all three cases to the underground oil shale was modeled by a series of closed-loop pipes. The pipes ran from the surface to the desired subsurface zone where the majority of the heat was transferred to the oil shale; the cooled fluid was then returned to the heat source at the surface for reheating. The heat source was a natural gas fired boiler for the base case and was an HTGR for the HTGR-integrated case. The fluid and heat flows through the circulation systems were modeled using Hyprotech's HYSYS.PlantTM process modeling software.A mass and energy balance model was developed to evaluate oil production, gas production and usage, electricity generation and usage, heat requirements, and CO2 emissions for each case. Integrating an HTGR to an in situ oil shale retort operation appeared quite feasible and had some notable advantages over the base case. The HTGR-integrated case produced the same amount of refinery-ready oil, four times the amount of gas, 8% of the amount of CO2, and 70% of amount of electricity as the base case evaluated with retort heat coming from combustion of fossil fuels.
