Dr. Masaki Morishita is a senior consulting engineer with Japan Atomic Energy Agency, and has almost 40 years’ experience in R&D related to high temperature structural design and seismic design of Sodium Fast Reactors mechanical components.He also has been active in the nuclear codes and standards development activities both in JSME and ASME for more than 20 years. He is a past Chair of JSME Main Committee on Power Generation Facility Codes, and is also a past chair of Subgroup High Temperature Reactors of ASME Boiler and Pressure Vessel Code Section III. He is a fellow of both JSME and ASME.