Sludge collector performance in steam generators of pressurized water reactor

Corrosion products produced within a Pressurized Water Reactor plantʹs secondary system How into and concentrate in the steam generators (SGʹs). These corrosion products, which mainly consist of magnetite accumulate in regions of stagnant flow and deposit on the surface of the heal transfer tubes. These deposits are referred to as ʹsludgeʹ. Harmful impurities also contained in secondary water may concentrate next to the lubes within these sludge deposits and can cause lube corrosion. This paper reports on a ʹsludge collectorʹ that separates suspended solids from the secondary water inside the SG in a region away from tube bundle. The operating principle, supporting analysis and laboratory test data, and field lest results arc described. © 2000 Elsevier Science S.A. All rights reserved.