The OCRC Fuel Cell Lab Safety System: A Self-Stabilizing Safety-Critical System
We describe the practical application of self-stabilization to a safety-critical system. The Ohio Coal Research Center (OCRC) at Ohio University has a fuel-cell laboratory that uses explosive and poisonous gases. The lab is located in and uses the ventilation system of a large campus building that houses offices, other labs, and classrooms. The OCRC fuel cell lab safety system seeks to protect lab and other building personnel in the event of a gas leak. We present the system and the use of self-stabilization to ensure that, in the presence of actual or potential hazards, the lab converges to as safe a state as possible. It is responds to environmental conditions such as gas leaks and is tolerant to faults that affect the system’s sensors and actuators.
KeywordsFuel Cell Safety System Ventilation Control Sensor Component Hydrogen Sensor
Unable to display preview. Download preview PDF.
- 1.Cooper, M., DeSilva, C., Bayless, D.: Comparison of LSV/YSZ and LSV/GDC SOFC anode performance in coal syngas containing H2S. Journal of the Electrochemical Society 157(11), B1713–B1718 (2010)Google Scholar
- 2.Faria, D.: Verification and validation of a safety system for a fuel-cell research facility: a case study. Master’s thesis, Ohio University (2007)Google Scholar
- 4.Leal, W., McCreery, M., Faria, D.: The OCRC fuel cell lab safety system: A self-stabilizing safety-critical system. Technical Report OSU-CISRC-5/11-TR17, Department of Computer Science and Engineering, The Ohio State University (2011)Google Scholar
- 5.Leal, W., Xiao, D., de Faria, D.C., Kremer, G., Switzer, S., McCreery, M.: Design of a safety monitoring and control system for a fuel cell laboratory. In: Proceedings of the 31st Clearwater Coal Conference, CCC (2006)Google Scholar
- 6.NASA. Fault tree handbook with aerospace applications (2002), http://www.hq.nasa.gov/office/codeq/doctree/fthb.pdf