Andrew Holcomb

Andrew M Holcomb

Group Leader, Criticality Safety Analysis and Research

As Criticality Safety Analysis and Research (CSAR) Group Leader, Andrew works alongside his colleagues and DOE sponsors to strengthen analysis methods, streamline reviews, and maintain the trusted tools that underpin the safe handling, transportation, and storage of fissile materials. He also ensures that the CSAR group maintains and builds expertise in shielding and transport analysis, sensitivity and uncertainty analysis, and benchmarking and validation. 

Throughout his tenure at ORNL, Andrew has been instrumental in developing and maintaining several key software packages, including SCALE, AMPX, and SAMMY. His unique combination of experience, education, and training have made him invaluable in both identifying and resolving long-standing issues with our deployed nuclear data libraries. More recently, he has supported updates to the nuclear criticality slide rule, performed international shielding intercomparison studies, lead the development team for the ARCTURUS project, and contributed to a number of DNCSH-funded tasks to support the domestic, commercial-scale deployment of HALEU.

Andrew joined ORNL in 2016. He holds a Ph.D. and M.S. in Nuclear Engineering from the Georgia Institute of Technology, and a B.S. in Nuclear and Radiological Engineering from the University of Florida.