// Waste Management Strategies and Methods, Repository Design
OSMOSS
Operational Safety Monitoring with Fiber Optic Sensing Systems
For several years, fiber-optic sensing devices have been used for straightforward on/off monitoring functions such as presence and position detection. Recently, they have been receiving increasing attention as they offer a novel, exciting technology for a multitude of sensing applications. In the deep geological environment, most physical properties, and thus most parameters important to safety, can be measured using fiber-optic technology. The objective of this project has been focused on the measurement of physical parameters for thermo-hydro-mechanical monitoring of structures within final repositories, as well as the detection of harmful gases for operational safety purposes.
The activities performed within this project can be divided into three categories:
- Development of new sensors addressing the parameters: pH, hydrogen, temperature, porewater pressure, total pressure, fissurization, and high-resolution deformation effects;
- further development and improvement of the interrogation systems for monitoring complex large-scale sensing networks;
- and extending the evaluation results of the behavior of the fiber-optic monitoring systems in real field installations.
The selected sensors have all been developed and tested. Some sensors still require further fine-tuning, but the overall goal has been achieved. The interrogation system has been completely redesigned and improved with respect to accuracy and reliability. A couple of field installations have been equipped during the project for evaluating and qualifying the developed fiber-optic sensing network systems. A good correspondence with conventional sensors has been demonstrated. After the dismantling of the sensing network at the Konrad site, all sensors were recalibrated and still showed an excellent sensor response. No contamination or malfunctioning could be observed after almost 4 years of operation. From all these field results, it can be concluded that fiber-optic monitoring systems devoted to operational
Contact
Research & Development
info@bge-technology.de
Short Infos
Runtime: 2004 - 2005
Client:
BMWA
Funding Code:
02E9249
Partner:
I. D. FOS Research EEIG (EEIG), Belgien
Publications
// Research report
Operational Safety Monitoring with Fiber Optic Sensing Systems. Vol. I. Summary and Evaluation
Author(s): M. Jobmann, J. Vlekken, M. Voet, et al.
Language: Englisch
30.06.2005
Jobmann, M.; Vlekken, J.; Voet, M. R.; et al. (2005): Operational Safety Monitoring with Fiber Optic Sensing Systems. Vol. I. Summary and Evaluation. OSMOSS: Operational Safety Monitoring with Fiber Optic Sensing Systems. DBE TECHNOLOGY GmbH (DBE TEC), I. D. FOS Research EEIG (EEIG). Peine
// Research report
Operational Safety Monitoring with Fiber Optic Sensing Systems. Vol. II. Technical Details
Author(s): J. Vlekken, M. Voet, M. Jobmann, et al.
Final Report
Language: Englisch
30.06.2005
Vlekken, J.; Voet, M. R.; Jobmann, M.; et al. (2005): Operational Safety Monitoring with Fiber Optic Sensing Systems. Vol. II. Technical Details. Final Report. OSMOSS: Operational Safety Monitoring with Fiber Optic Sensing Systems. DBE TECHNOLOGY GmbH (DBE TEC), I. D. FOS Research EEIG (EEIG). Peine
// Research report
Operational Safety Monitoring with Fiber Optic Sensing Systems. Vol. III. Standard and Qualification Document
Author(s): M. Jobmann, et al.
Language: Englisch
30.06.2005
Jobmann, M.; et al. (2005): Operational Safety Monitoring with Fiber Optic Sensing Systems. Vol. III. Standard and Qualification Document. OSMOSS: Operational Safety Monitoring with Fiber Optic Sensing Systems. DBE TECHNOLOGY GmbH (DBE TEC), I. D. FOS Research EEIG (EEIG). Peine