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首页> 外文会议>2002 ASME Pressure Vessels and Piping Conference, Aug 5-9, 2002, Vancouver, British Columbia, Canada >MANAGING AGING OF COATINGS FOR NUCLEAR POWER PLANT LICENSE RENEWAL
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MANAGING AGING OF COATINGS FOR NUCLEAR POWER PLANT LICENSE RENEWAL

机译：核电厂许可证更新的涂层管理

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摘要

Coatings are applied to structures and components in nuclear power plants, both inside and outside containment. The coatings applied to safety-related structures, systems, and components inside containment are classified a Service Level Ⅰ Coating, and coating systems outside of primary containment, but which in the event of a failure could adversely affect the orderly and safe shutdown of the plant are classified a Service Level Ⅲ coating. Weaknesses have been found in existing programs in regards to application of protective coatings for Service Level 1. This weakness is evident as blistering, cracking or peeling. For the extended period of operation, the licensee must demonstrate to in-place coating is qualified except for coatings shown on an Unqualified Coatings List; that the amount of unqualified coatings will not clog sump screens, strainers, or other safety-related equipment; and that coating assessment is being made at each refueling outage This paper will discuss the elements of a good coating program for the period of extended operation to ensure that existing coating systems are qualified; and that unqualified and degraded coatings will not clog strainers, screens or other safety-related equipment.
机译：在核电站的内部和外部安全壳中，涂料均用于结构和组件。应用于安全壳内与安全相关的结构，系统和组件的涂层被归类为“服务等级Ⅰ”涂层，而在主要安全壳之外的涂层系统被划分为等级，但如果发生故障，则可能会对工厂的有序和安全关闭产生不利影响被归类为服务等级Ⅲ涂料。在现有程序中发现在使用服务等级1的保护性涂层方面存在弱点。这种弱点表现为起泡，破裂或剥落。在延长的使用期限内，被许可人必须证明就地涂层是合格的，但不合格涂层清单上显示的涂层除外；不合格涂料的量不会堵塞集油槽筛网，过滤器或其他与安全有关的设备；以及在每次加油中断时都要进行涂层评估。本文将讨论延长运行期良好涂层计划的要素，以确保现有涂层系统合格。并且不合格和退化的涂层不会阻塞过滤器，筛子或其他与安全有关的设备。

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