核电厂库存管理随机模型预测控制研究

库存管理是核电厂安全、稳定、经济、运行重要的活动。在核电厂运行中,备件的准备和管理直接关系到设备的可靠性和安全性。然而,需求的不确定性、交货延迟等因素给库存管理带来了巨大挑战。为了确保库存的安全性,核电厂通常采用保守的库存管理方案,这意味着需要维持较高水平的库存以应对不确定的需求和供应情况,从而增加了库存成本和风险。为解决这一问题,提出了机会约束下的随机模型预测控制方法。该方法在预测库存需求时,明确考虑了库存管理涉及的不同目标和约束,特别是在平衡库存保守性和安全性方面引入了机会约束的概念。机会约束允许在一定程度上调整库存水平,以更灵活地应对需求和供应的变化,从而提高了库存的利用率和运营效率。与传统的库存控制方法相比,随机预测库存控制方法能够更有效地减少库存水平波动,并在保证库存安全的前提下降低库存成本。这种方法的应用案例分析验证了其在实际场景中的有效性,为核电厂提供了一种更灵活、更高效的库存管理方案,有助于提升核电厂的运行效率和经济性。

The Setting of Sipping Test Devices for Irradiated Fuel in Nuclear Power Plant

The sipping test devices are used to identify the defective fuel. The defective fuel can be identified by detecting the occurrence of the fission products that are entrained by the medium rising around the fuel rods. This project is the setting of the two kinds of the three sipping test devices to inspect the tightness of the irradiated fuel assembly from two units NPP （nuclear power plant）. The in-mast sipping shared by two units is used for qualitative tightness test of each fuel assembly during refueling operation above the reactor. The two poolside sipping is used for quantitatively confirming the diagnosis of the in-mast sipping and identifying the tightness of the fuel at the side of the fuel storage pools of each unit after refueling. The project was implemented by research, design manufacture and calibration of these three devices and completed successfully with serious quality assurance and quality control. The performance of these devices is well demonstrated.