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In 1969, the American National Standards Institute's (ANSI) Committee N45 on Reactor Plants and Their Maintenance initiated a program to develop quality assurance standards for nuclear power plants. The standards are sponsored by the American Society of Mechanical Engineers (ASME). To date more than ten standards have been prepared or are in preparation. One of the standards, which is the subject of this paper, covers the cleaning of fluid systems and associated components during the construction phase of nuclear power plants. This standard emphasizes the importance of planning and establishing a cleaning program for the construction phase to maintain the required cleanness of fluid systems and components during and after installation or erection and the preoperational cleaning and lay-up requirements of fluid systems to render them ready for service. The standard also lists the requirements for the practices and procedures used to implement the cleaning program, the requirements for cleanness classifications used for the systems, and precautions that should be observed in performing the cleaning operations.
stainless steels, cleaning, nuclear power plants, construction, quality assurance, systems, components, planning, cleanness classes, cleanness control
Hicks, J. H.
Principal engineer, Nuclear Power Generation Div., Babcock & Wilcox Co., Lynchburg, Va.