核电站备件预留对库存及保障率的影响

Influence of Spare Parts Reservation on Inventory and Support Rate in Nuclear Power Plants

备品备件的保障对核电站的安全稳定运行具有重要意义,为提高备件保障率,需对部分备件进行提前预留,但目前尚未明确预留对库存及保障率的影响。通过选用某核电站9000项备件,对备件在不同预留提前期和预留准确率情况下的库存和保障率进行了分析,结果表明备件预留提前期越长其总库存金额及保障率越高,且备件预留准确率越高,其在相同保障率情况下库存金额越低。该结论对核电站进行备件预留提前期及预留准确率的指标设置具有一定的指导意义。

The effective support of spare parts is of great importance to the safe and stable operation of nuclear power plant.In order to improve the spare parts support rates,some spare parts need to be reserved ahead of schedule.However,the effects of reservation on inventory and support rates are not clear.Through the selection of 9000 items of a nuclear power plant s spare parts,the inventory and support rates of spare parts under different reserved time and reserved accuracy are simulated and analyzed.The longer the reserve lead time is,the higher the total inventory and guarantee rate will be.And the higher the accuracy of spare parts reservation,the lower the inventory amount under the same support rates.The conclusion has certain significance for setting up the index of the reserve lead time and reserve accuracy rates of nuclear power plants.