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The goal of both a plant cleaning procedure and a plant cleaning philosophy is to produce a plant which is clean at the time of plant startup. The development of a preoperational cleaning procedure to be used for either a nuclear or fossil fueled power plant and the development of a cleaning philosophy related to either of the two types of plants have many common elements. However, they are distinctly different operations with potentially different consequences. Development of the philosophy incorporates all of the considerations involved in development of the procedure, plus other considerations, and a proper philosophic approach can result in greatly simplified cleaning procedural requirements. This paper presents the essential steps in the development of the philosophy, and contrasts them with the development of a procedure. The types of information required in each case are discussed, and pertinent laboratory data are presented. Some examples of plant cleaning problems are presented, with their solutions. General guidelines for the development of a cleaning philosophy are presented, and specific requirements for cleaning procedures are discussed.
cleaning, stainless steels, contaminants, boiling water reactors, nuclear reactors
Walker, W. L.
Principal engineer, Nuclear Energy Division, General Electric Company, San Jose, Calif.