This paper reports the capability to depressurize a three-loop pressurized water reactor during a station blackout sequence assessed using the SCDAP/RELAP5 computer code. During the initial calculations, failure of the pressurizer surge line from creep rupture was predicted prior to relocation of molten core material to the lower plenum. The system response from that pressure boundary failure was then simulated until the accumulators emptied. Additional calculations assessed the accident progression in the even that the surge line did not fail. These calculations were intended to bound in-core damage progression prior to relocation of molten material to the lower plenum.