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01494 QUALIFYING A POLYMERIC DISPERSANT FOR USE IN A PWR STEAM GENERATOR

Picture for 01494 QUALIFYING A POLYMERIC DISPERSANT FOR USE
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Product Number: 51300-01494-SG
ISBN: 01494 2001 CP
Author: J. M. Jevec, R. J. A. Tippett, R. Crovetto and C. J. McDonough
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One of the major problems encountered in operating pressurized water reactor (PWR) steam generators is the accumulation of metal oxide deposits on the secondary side. A new method of controlling iron deposition in a PWR steam generator has been developed. This method consists of continuously feeding a high purity polymeric dispersant to keep the corrosion products entering the steam generator in suspension until they can be filtered from the blowdown. The paper describes the criteria for designing a polymer along with the steps necessary to qualify the selected material for evaluation in an operating PWR. This includes a detailed discussion of polymer characteristics, performance requirements, materials compatibility and potential implications for plant operation.
One of the major problems encountered in operating pressurized water reactor (PWR) steam generators is the accumulation of metal oxide deposits on the secondary side. A new method of controlling iron deposition in a PWR steam generator has been developed. This method consists of continuously feeding a high purity polymeric dispersant to keep the corrosion products entering the steam generator in suspension until they can be filtered from the blowdown. The paper describes the criteria for designing a polymer along with the steps necessary to qualify the selected material for evaluation in an operating PWR. This includes a detailed discussion of polymer characteristics, performance requirements, materials compatibility and potential implications for plant operation.
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