This final report aims to develop an automated system that can effectively replace the EPA-mandated in-service and out-of-service inspections of the Internal Floating Roofs (IFR) in Aboveground Storage Tanks (ASTs). By extending the IFR internal inspection interval, VOC emissions associated with IFR landing and tank degassing/cleaning are reduced, while minimizing safety risks and saving operating capital. Improving automated methods for inspection of tanks provide the pipeline industry with early notification/warning systems to address integrity and safety concerns and avoid incidents and releases. The benefits of assessing and potentially leading the development of automated technologies for this purpose include preventing injury and loss of life, limiting potential financial impacts associated with accidents and releases, environmental damage and costs for fines and restoration.
Key Results Several possible implementations and technological requirements were analyzed by the research team. It was concluded that the key enabling technology needed to realize reliable in-tank seal integrity monitoring is the gas sensing component. Existing gas detection technologies were reviewed and the leading candidates were tested. A prototype of this technology is currently being developed that will be certified as intrinsically safe and tested on an operational IFR AST. The Final Report is available on PRIME for PRCI Members.
In many cases, operators will be able to continue to use AGA-8 thereby saving significant costs and efforts in avoiding update modifications.