Online biofilm removal and heat-transfer recovery in nuclear service water CCW exchangers — NRC shutdown avoided

What this case study covers

A US nuclear plant's CCW exchangers were losing heat transfer to biofilm. Standard options — bleach, H₂O₂, surfactant biodispersants — were all ruled out by plant constraints. Mechanical cleaning meant shutdown.

Inside this case study

• Novel stabilized bromine + dendrimer biodispersant program design
• Sidestream DATS validation methodology before full deployment
• Three-layer proof framework: sidestream, microbiological, plant data
• How to design online cleanups inside EHS and regulatory constraints