An Overview of MAAP4-candu Code

Abstract

MAAP4-CANDU was selected by AECL and the CANDU utilities to be the primary tool for modelling the CANDU station response to a Severe Core Damage accident. MAAP4-CANDU is the current adaptation of the MAAP code, specifically designed for a CANDU station. OPG is the code licensee, and AECL holds a sub-license from OPG. The results from MAAP4-CANDU analyses support Level 2 PSA activities and assist in the development of severe accident management measures. This paper provides an overview of the MAAP4-CANDU Code, which includes the code development history, code capabilities and the current status.