Overall accident consequence estimation using the PACE code

Low probability potentially high consequence events, at a hypothetical nuclear power reactor at a notional location in the north of England, have been examined using the off-site (Level 3) Probabilistic Safety Assessment (PSA) code PACE (Probabilistic Accident Consequence Evaluation). PACE provides probabilistic estimates of a number of endpoints such as; doses that may be received, consequences of protective actions and the overall economic effects of an accident. The latter estimates use the economic model COCO-2 (Costs of Consequences Offsite) implemented within PACE. The work supports NEA development of generic advice on the application of economic modelling as part of probabilistic nuclear accident consequence assessment.