1958: Graduated in Mechanical Engineering from Imperial College, London.

1964: Received doctorate in Nuclear Engineering from MIT. Joined General Electric Company.

1967: Assigned by GE to study use of probability in nuclear power plant safety.

1969: Author of 2 Proprietary GE reports and paper in ANS Transactions on safety goals and probabilistic analysis of NPPs.

1974: NRC’s Office of Research. Lead revision of RSS consequence model, Appendix VI of WASH -1400.

1979-1990: EPRI. Organized Risk Assessment Program, which managed research supporting L1 and L2 PRAs, including seismic.

1999-2023: Member of ASME/ANS Joint Committee on Nuclear Risk Management.