What are the preventive measures against nuclear fuel abrasion failure?

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Based on the background discussed earlier regarding nuclear fuel abrasion failure, the following are the specific preventive measures: First, optimize the structural design by improving the clamping mechanism of the grids: adjust the clamping force exerted by the positioning grids on the fuel rods to prevent flow-induced vibration and abrasion, thereby reducing the likelihood of micro-wear between the grids and the fuel rods at its source. Added anti-matter intrusion structure: A lower pipe seat with foreign object filtration functionality is used, and a protective frame is installed right next to it to intercept hard foreign objects in the coolant circuit, thereby preventing such objects from getting stuck and causing wear on the casing. Eliminating the risk of shroud jets: Optimizing the connection structure of the core shroud to reduce the pressure difference on either side of the shroud, thereby eliminating, at the design level, the problem of vibration and abrasion of adjacent fuel rods caused by jet streams.