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RSCS, CorrTech & Exelon Co-Presentation at EPRI BPIG Meeting, Feb 2014
Posted on March 19th, 2014

RSCS contributed to a joint presentation with representatives from CorrTech Inc. and Exelon Corporation titled "Innovative Method for Collecting in-situ Soil Samples and Installing Smart Test Stations at an Exelon Generation Station to Analyze Soil Conditions, Cathodic Protection Effectiveness and Corrosion Potentials at or Near Pipe Depth" (view presentation here). RSCS has been coordinating with CorrTech and Exelon to develop an innovative approach to collect and analyze soil samples through small borings proximal to target piping, which includes safety related and important to safety buried piping. The methods that are being developed allow for the installation of smart probes and/or half cells to measure corrosion potentials in proximity to piping. The use of small borings reduces project cost(s), inspection times and schedules. This eliminates the need for dewatering at locations below the water table, and increases the number of available inspection locations by reducing the number of open excavations required for inspections. The most recent project involved the installation of smart test stations through small diameter borings, which had never been implemented at an operating power plant.

For decades, ASTM and NACE standards for monitoring cathodic protection and coating quality have been relied upon by pipeline operators and regulators to accurately monitor transmission pipelines. These same standards are very challenging to implement for buried piping and systems at nuclear power plants.

The challenge has been to develop a cost effective method to accurately monitor nuclear plants’ buried pipe which is comprised of a “spaghetti bowl” of multiple systems all in close proximity, manufactured using various metals all at equal electrical potentials. The presentation will describe the process from planning to successful completion of capturing soil samples and installing smart test stations at or near pipe depth as completed at an operating plant in the Midwest.

RSCS will also exhibited at the EPRI BPIG meeting to provide information on our geotechnical services. We support clients with planning, implementing and interpretation of a broad spectrum of geotechnical investigation methods including:

  • 3D Site Digitization
  • Aquifer Testing (pump tests)
  • Down-hole data logging instrumentation
  • Down-hole Geophysical Logging
  • Extraction Well Design and Installation
  • Geotechnical Soil and Bedrock Boring Description
  • Groundwater Fate and Transport Modeling
  • Groundwater Sampling
  • Monitoring Well Design and Installation
  • Slug Testing
  • Soil and Sediment Sampling
  • Soil Resistivity Measurements
  • Surface Geophysical Survey Techniques (GPR, EM, T. Conductivity)

These geophysical methods provide high quality geospatial data sets that benefit characterization and site investigations, supporting a broad range of projects including groundwater protection/investigations, buried pipe investigations, subsurface mapping and construction.

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