Nuclear Service Water

Nuclear plant service water systems are large; often huge, with miles of piping, hundreds of heat exchangers, and non-standard designs (i.e., in contrast to NSSSs)

Those systems contain both safety related and non-safety related piping and heat exchangers. The current generation of nuclear plants is approaching the end of their operational original design life. The systems are cooled by a variety of water chemistries, which leads to a variety of materials selections. Because service water systems, especially safety related service water systems are required to be diverse and redundant, those systems are subjected to a wide variety of operating conditions (e.g., intermittent flows, extended periods of stagnation), such that many systems spend most of their lives in wet lay-up. Those variable flow conditions also make any water treatments difficult.

The highly diverse design and operating conditions do not make service water systems readily amenable to highly standardized guidelines for chemistry and testing (i.e., in contrast to reactor primary, secondary, and even closed cooling water systems). The large amount of equipment and great size also requires different approaches to condition assessment.

We are uniquely equipped to deal with all aspects of service water system degradation, use of predictive analyses to protect the asset, understanding of degradation mechanisms, inspection, testing, and monitoring, mitigation of degradation, repairs (both short term and long term), and replacements.

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