Chemical-Cleaning Demonstration Test No. 2 in a Mock-Up Steam Generator (PWR)

摘要

This report describes the results of the mockup demonstration test of the first modified baseline process under Contract S-127, Chemical Cleaning of Nuclear Steam Generators. The objective of this program is to determine the feasibility of cleaning the secondary side of nuclear steam generators with state-of-the-art chemical cleaning technology. The first step was to benchmark a baseline process. This process was then modified to attempt to eliminate the causes of unacceptable cleaning performance. The modified baseline process consists of an EDTA/H sub 2 O sub 2 -based copper solvent and a near-neutral, EDTA/N sub 2 H sub 4 -based magnetite and crevice solvent. This report also presents the results of three inhibitor evaluation mockup runs used in the evaluation of the modified baseline process. (ERA citation 08:035796)