Th-104-17
Microbiological Influenced Corrosion (MIC) and Its Effect on 316(b) Requirements
Consolidated Edison’s East River Station located in Lower Manhattan on the East River recently completed installation of Dual Flow Fine Mesh Ristroph Screen on their cooling water intake to satisfy both New York State Requirements as well as the EPA Final Rule implementing §316(b) of the Clean Water Act. While the installation and Verification Monitoring Results indicate this was a very successful project, recent inspections have revealed that Microbiological Influenced Corrosion (MIC) has caused extensive damage to the new screens requiring removal and overhaul after only one year.
This presentation will review the technological performance history of the installation, the proliferation MIC in the estuary, the effects of 316(b) velocity reductions on MIC propagation as well as material selection and operational changes required to reduce MIC damage and allow for long term performance of screening technology in the future.