SCHEDULING OF NUCLEAR POWER PLANT OUTAGES AND WORK DURING AN OUTAGE - A REVIEW

摘要

A Nuclear Power Plant (NPP) outage is a planned period of time during which the plant does notproduce energy and undergoes offline refueling and maintenance. For a commercial power plant, anoutage window could last up to two months during which thousands of activities are performed. Theseactivities are related by precedence thereby constituting an activity network. A team of planners/schedulersdevelops an outage schedule at least a year in advance of the execution of an outage. A significant lossof revenue incurs for every extra outage day beyond the planned period. The four scheduling problemsthat are typically faced in outage scheduling and planning include: (1) selection of outage window for acollection of NPPs, (2) generation of a feasible initial outage schedule, (3) updating the outage schedulewhen unplanned activities arise, and (4) measuring the risk of a given outage schedule. In this paper, wepresent approaches for each of these problems as well as highlight the areas for potential future research.Outage activity networks with both deterministic and stochastic durations are considered.