I have more than 40 years of experience in all aspects of power plant engineering design, procurement, construction, operations, maintenance, testing, decontamination and dismantlement of both fossil and nuclear generating facilities both in the United States and internationally. I have developed design documents such as system descriptions, process flow diagrams, P&IDs, technical specifications for fluid systems included in power plants both fossil and nuclear. This work also included preparation of safety analysis reports and environmental impact assessments. While working for a public utility, I operated and maintained mechanical components and instrumentation in operating power plants, conducted performance testing of boilers and turbines and auxiliary systems in accordance with power test codes, and developed power plant life extension and availability improvement programs while participating in the implementation of such programs in operating power plants in the United States. I led a team of engineers that developed the concept of removing and replacing nuclear power plant steam generators by making a new construction opening in the containment shell. As Chief Nuclear Engineer I directed personnel performing containment pressure/temperature transient calculations, thermo-hydraulic and radiological analysis. At Chernobyl, I oversaw and managed the analysis and development of four early projects to stabilize the existing confinement structure, the radiological safety programs, characterize the radiation zones within the existing structure, evaluate the long terms waste management program, and the new safe confinement design that is being implemented. I have over 5 years of expert witness experience with consultation, deposition, and courtroom testimony.