The first-ever Asian MELCOR User Group Meeting was held in Daejeon, South Korea, from October 13–17.

MELCOR is a fully integrated, engineering-level computer code whose primary purpose is to model severe-accident progression in light-water-reactor (LWR) nuclear power plants. Sandia developed MELCOR for the US Nuclear Regulatory Commission (NRC)—to treat a broad spectrum of phenomena in both boiling and pressurized water reactors (BWRs/PWRs) in a unified framework. Current MELCOR uses include estimating (a) fission product source terms and their sensitivities and (b) uncertainties in a variety of applications.

The Asian MELCOR User Group consists of participants from Korea, Japan, China, and Taiwan and may be expanded to other Asian countries in the future. This first-ever meeting consisted of a week-long workshop for new MELCOR code users and was attended by more than 50 participants from the four member countries. These meetings will continue annually to will provide an opportunity for MELCOR code users in Asia to share experiences in running and applying the code and to receive insight and training from Sandia MELCOR developers.