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Considering the background related to nuclear fuel abrasion discussed earlier, the impact of abrasion-induced failures on the safe operation of nuclear power plants is mainly reflected in the following aspects: an increased risk to radiation safety. Abrasion can damage the integrity of the zirconium alloy cladding, which serves as the first line of defense; as a result, fission products leak into the primary circuit, causing abnormal increases in the radiation levels there. This poses a potential risk of radiation leakage, which could threaten the radiation safety of workers and the public. The operational flexibility of the unit is limited. Excessive radioactivity in the primary circuit directly affects the fuel reliability metrics of the unit, restricting its ability to increase or decrease its load. If the radiation level exceeds the limits specified in the technical specifications, the unit must be shut down, disrupting its normal operation schedule. It poses a risk of secondary failure: the primary loop cooling water can penetrate inside the fuel rods through erosion-induced cracks, where it reacts with zirconium alloy to produce hydrogen. This leads to secondary hydrogen embrittlement of the cladding, further expanding the extent of the damage and even exacerbating core contamination, resulting in persistently high levels of radioactivity in the primary loop throughout subsequent cycles. It increases the risk of severe accident progression. When extreme conditions such as loss of coolant occur, the abraded fuel cladding is more likely to heat up rapidly and fail, accelerating the process of core exposure and melting, and thereby increasing the likelihood of severe accidents such as pressure failure of the containment structure.