SASSYS-1 balance-of-plant component models for an integrated plant response

Models of power plant heat transfer components and rotating machinery have been implemented in the SASSYS-1 code. The models described in this paper extend the scope of the balance-of-plant model to handle non-adiabatic conditions along flow paths. The models for the various types of components rely on simple conservation balances and extensive component data in the form of correlations. An integrated test problem which simulates an entire LMR plant was carried out for a 12.5% step load reduction with some of the new models incorporated. Consistent results were obtained and the Cray-XMP CPU time for running the full SASSYS-1 code for this problem is about 10% higher than real time