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在世界核营运者协会(WANO)分析过的多起事件中,操纵员完全依赖反应堆保护系统来保护堆芯,而不是优先采取保守行动。尤其是在发生规程未覆盖的电网异常工况时,由于操纵员缺乏经验可能使工况进一步恶化。分析电网频率变化对压水堆机组运行的潜在不利影响,提出应对措施,使操纵员在遇到此类电网异常工况时能及时作出正确的响应,避免反应堆保护系统动作来保护堆芯,以保守地监控压水堆机组运行,始终保持电厂的安全限值有足够的安全裕度。
In many cases analyzed by the World Association of Nuclear Operators (WANO), operators rely solely on reactor protection systems to protect the core, rather than prioritizing conservative actions. In particular, in the event of an abnormal grid condition not covered by the protocol, operating conditions may be further aggravated by the lack of experience of the operator. Analyze the potential adverse effects of grid frequency changes on the operation of PWR units and propose countermeasures so that operators can respond promptly and correctly in case of such grid abnormalities and prevent the reactor protection system from acting to protect the core. Conservatively monitor the operation of PWR units and always maintain sufficient safety margin for the plant’s safety limits.