Abnormal Transient Analyses at Supercritical Pressure

One of the RCPs is assumed to trip. The coast-down time is 5 s in consideration of the inertia of the pump and driving turbine. The analysis results are shown in [Pg.382]

Ratio of density coefficient to reference case/AMCST (°C) [Pg.383]

Bold characters reference case, AMCST increase in maximum cladding surface temperature [Pg.383]

This is the typical transient where both RCPs trip. However, its sequence is different from a total loss of reactor coolant flow accident as described in Sect. 6.4. In the loss of offsite power, the motor-driven condensate pumps are assumed to trip instantaneously. The turbine control valves are quickly closed due to a turbine trip. The turbine bypass valves open immediately after that. A scram signal and AFS signal are released by detecting the loss of offsite power or turbine control valves quickly closed or condensate pump trip. Both RCPs are assumed to trip at 10 s [Pg.383]

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