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Atlanta, GA|Atlanta Marriott Marquis
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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.
R. L. French, J. H. Price, and K. W. Tompkins
Nuclear Science and Engineering | Volume 27 | Number 2 | February 1967 | Pages 360-366
Technical Paper | doi.org/10.13182/NSE67-A18275
Articles are hosted by Taylor and Francis Online.
Four simple enclosure shields were exposed to fallout from Shot Small Boy of Operation Sunbeam. Gamma-ray measurements were made both inside and outside the enclosures to determine time-dependent and time-integrated dose transmission factors (dose inside divided by dose outside). The analysis of the experiment consisted of calculating similar factors and comparing with the measured data. Monte Carlo procedures were used to determine the radiation distribution incident upon the shields and to compute the radiation penetration into the shields. Fallout gamma-ray spectra resulting from several different theoretical and experimental investigations were used in calculating the dose transmission factors. The calculated dose transmission factors were found to be consistently higher than the measured factors by as much as a factor of 2, depending upon the particular source term. After investigating several possible causes, it was concluded that the discrepancy was probably the cumulative effect of a deficiency of low-energy photons in the calculated source terms, omission of support structure inside the enclosure shields in the penetration calculations, and of neglecting the effects of ground roughness in the calculations.
