Challenge: After the dredge cell failure at the Kingston power generating facility in 2008, the Tennessee Valley Authority (TVA) implemented significant advancements to manage engineering assessments and improve construction processes of its coal combustion residuals (CCR) landfill storage facilities. TVA identified improvement opportunities compared to traditional geotechnical QC/QA processes and began investigating new assessment techniques that focused on developing improved specifications for construction of CCR facilities.
Solution:
- Ingios® supported TVA’s engineering and quality initiatives in addressing challenges with a multi-faceted solution of services, training, and technology.
- Ingios designed and deployed a comprehensive monitoring program using compaction quality mapping integrated with a web application for engineering analysis and documentation. The program’s success has led to extending the COMP-Score® RT (CRT) and COMP-Score CONNECT (CSC) solutions to five sites. Between 2015-2020, an estimated 2M yd3 of CCR materials have been placed, compacted, and documented using the new monitoring program. Ingios has trained 30+ operators to provide certified CRT operator status. With the CSC dashboard tool, the data upload process to delivering e-compaction report development requires about 2 minutes. The e-compaction report includes data analytics/statistical summaries and audit-ready plots of color-coded geospatial maps.
Benefits: The new monitoring program advances TVA’s goals of improving field process control, reducing risk of placing low compaction quality for CCR, and improving cost to rate payers by improving construction efficiencies.
