Integration of CATHENA thermal-hydraulic model with CANDU 6 analytical simulator controller

This paper introduces a powerful design and analysis tool named SIMCAT that is developed to support applications to license a CANDU nuclear reactor, refurbish projects, and support the existing CANDU stations. It consists of the Canadian Algorithm for THErmohydraulic Network Analysis (CATHENA), the control logics from CANDU6 Analytical Simulator (C6SIM), and a communication protocol, Parallel Virtual Machine (PVM). This is the first time that CATHENA has been successfully coupled directly with a program written in another language. The independence of CATHENA and the C6SIM controllers allows the development of both CATHENA and C6SIM controller to proceed independently. (author)