Additional TRAC-PD2 Studies of Large Break LOCA in a 4-Loop PWR. August 1984

摘要

Additional calculations have been performed of the loss of coolant transient following a double-ended cold-leg guillotine break in a 4-loop PWR. These have been carried out using the computer code TRAC-PD2(MOD1) and plant data intended to be representative of the proposed Sizewell PWR design, and are intended to be ''best estimate''. Three calculations consider the effects of some of the accident assumptions used in the safety case for Sizewell B, covering broken loop pump behaviour, containment pressure, pumped ECCS flowrates, core representation and power profiles. Predictions are obtained for these calculations for peak cladding temperatures under various conditions of LOCA. (Atomindex citation 17:003485)