Abstract
Abstract Water-cooled nuclear reactors require periodic chemical decontamination so that preventive maintenance for continuity of operation can be performed at minimum cost and with minimum exposure of personnel to radiation. Testing of these chemical decontaminants is required so that optimum conditions can be established for maximum cleaning efficiency and lowest possible corrosion rates on carbon steel. Sequence of testing begins with laboratory beaker scanning and progresses through dynamic loop scanning, grossly contaminated system studies, cyclic corrosion evaluations and in-reactor loop decontamination tests. A typical process is described in which a cleaning compound consisting primarily of sulfamic acid is evaluated. Results of evaluation in the various stages of the process are reported. 8.4.5
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