Mr. Galyean has over 25 years experience in performing PRA on commercial nuclear power plants. After earning his Bachelor of Science degree in Physics at Millersville State College in 1976, he went to the University of New Mexico where he obtained his Master of Science degree in Nuclear Engineering in 1978.

Mr. Galyean is a senior PRA analyst at the Idaho National Engineering and Environmental Laboratory (INEEL), which he joined in 1986. In recent years, Mr. Galyean was the Principal Investigator of two large NRC-sponsored PRA-related programs. The latest entailed performing detailed statistical analyses on nuclear power plant reliability data collected from operating experience. This data was then used to estimate both the historical system reliability for operational missions actually performed and the expected reliability for postulated risk-significant missions. The earlier program was a research program aimed at supporting the resolution of USNRC Generic Issue 105, “Interfacing System Loss-of-Coolant Accidents at Light Water Reactors.” This program integrated many disciplines in the area of risk analysis, including: human reliability, thermal-hydraulics, consequences, external events, and stress analysis. In addition a number of innovative techniques were developed for generating human error probabilities and fluid system rupture probabilities. Mr. Galyean has also developed and teaches 1-week courses on PRA modeling techniques and on Level-2 PRA, and developed low-power and shutdown (LP/SD) specific PRAs as part of the Standardized Plant Analysis Risk (SPAR) model program. Other activities include serving on an NRC-sponsored expert panel that was formed to produce updated estimates of loss of coolant accident frequencies, supporting the independent validation of a PFM computer code (FAVOR), participating as the INEEL project manager on a multi-company, multi-lab project funded through the DOE NERI program performing a risk-informed assessment of new reactor design requirements. He has also provided significant contributions to a number of other risk/reliability related programs, including NUCLARR (Nuclear Computerized Library for Assessing Reactor Reliability), a PC-based databank of reliability data for both hardware and human actions; a reliability analysis of the INEEL site power distribution system; and an analysis of the risk significance of possible operator actions for managing severe accidents at a commercial nuclear power plant.

Prior to joining INEEL Mr. Galyean worked for Falcon Research and Development Company, Science Application International Corporation, and the NUS Corporation.

Mr. Galyean is a member of the American Nuclear Society, and has served on an International Atomic Energy Agency (IAEA) review teams (International Peer Review Service — IPERS) that reviewed a Level-1 PRA on the Borssele NPP (Dutch) and a Level-2 PRA on the Krsko NPP (Slovenian).