During his tenure with the nuclear regulator, Mr. Flavelle authored the CNSC Regulatory Policy P-290 "Managing Radioactive Wastes" and was lead author of the CNSC Regulatory Guide G-320 "Assessing the Long Term Safety of Radioactive Waste Management". He has initiated and supervised eighteen research contracts ranging in topics from the effectiveness of waste rock management practices to evaluation of contaminant retardation mechanisms, from propagation of measurement uncertainty in hydrogeologic data to a review of institutional controls to limit land use. He has authored or co-authored twenty-two publications and presentations.
Mr. Flavelle has been the CNSC representative and an active participant in several technical sub-committees of the OECD Nuclear Energy Agency's Radioactive Waste Management Committee (NEA/RWMC): the Advisory Group on In Situ Research and Investigation for Geologic Disposal (ISAG); the Coordinating Group on Site Evaluation and Design of Experiments (SEDE); the International Project on the Transport of Radionuclides in Heterogeneous Geologic Media (GEOTRAP); the Forum on Stakeholder Confidence (FSC); and the Integration Group for the Safety Case (IGSC).
Mr. Flavelle contributed to preparing the first national report to the Joint Convention on the Safety of Spent Fuel Management and the Safety of Radioactive Waste Management. He has also provided critical review of draft IAEA standards and guides, the most recent being Draft Safety Guide DS-355 "The Safety Case and Safety Assessment for Radioactive Waste Disposal", reviewed prior to participating in the 2009 GEOSAF workshop sponsored by the IAEA.