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TP17-02: Can Rusted Surfaces be Effectively Passivated to Reduce Further CorrosionThe industry standard corrosion monitoring practice for cooling water systems involves inserting a clean, pre weighed, metal specimen into a coupon rack and exposing it to the flowing water for a period of time, generally 30 90 days. Following exposure, the coupon is removed from the system, carefully cleaned, and reweighed. The weight loss is then related to an overall loss of metal thickness, which is typically expressed in terms of mils per year

tables and curves that should be developed

this problem was referred

Reviews the improvements made in treatment programs using molybdate as the basis for inhibition

provides an alternate approach to reducing measurement uncertainty

On many field erected cooling tower projects

Since the beginning of this decade

Abstract: The paper describes the repack experience of a cross flow cooling tower to a counter flow one using film fill

One tower has been in operation since 1976 and the other since 1980

Prevention and control guidelines for pitting corrosion in cooling water systems based upon real system experience are presented

the use of ClO2 was limited to later systems by the capital cost and complexity of on-site generators

decrease heat transfer efficiency

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