Water Chemistry Control: Q.A. is the Key!

Abstract

The initial chemistry requirements for CANDU PHWR plants were established about 25 years ago. In this paper two phases of the operation of CANDU plants which have had important impacts on the understanding of heat transport chemistry are reviewed. In the first case the importance of proper chemistry control as an aid in controlling radiation fields is described. The second case looks at the results from a CANDU 600 plant and demonstrates the benefits of third party reviews of chemistry data.