RETACT Models in Link's TMI-1 Advanced Simulator
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Abstract
The LINK RETACT (Real-Time Advanced Core and Thermohydraulic) code computes hydraulics and heat transfer within the pressurized water reactor's primary coolant system and the second sides of steam generators, and within the boiling water reactor's vessel and steam lines. The code is capable of dealing with the nonhomogeneous and nonequilibrium two-phase flow
conditions that could exist in the systems. Capabilities of the stand-alone RETACT code, for application to the modeling of mild and severe transients and accidents, were previously published (Refs. 1-4). Starting from late 1984, RETACT had been incorporated in the TMI-1 advanced simulator, which successfully passed the customer acceptance testing recently. This paper will briefly describe the TMI-1 simulator, its computer complex, and the thermohydraulic models used in RETACT. Also presented in this paper are comparisons of two transients, each run under the plant integrated environment.
conditions that could exist in the systems. Capabilities of the stand-alone RETACT code, for application to the modeling of mild and severe transients and accidents, were previously published (Refs. 1-4). Starting from late 1984, RETACT had been incorporated in the TMI-1 advanced simulator, which successfully passed the customer acceptance testing recently. This paper will briefly describe the TMI-1 simulator, its computer complex, and the thermohydraulic models used in RETACT. Also presented in this paper are comparisons of two transients, each run under the plant integrated environment.
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