Community Research and Development Information Service - CORDIS


Safety and Operational Monitoring of Nuclear Waste Repositories with Fibre-optic Sensing Systems (SOMOS)

Project ID: FIKW-CT-2001-00190
Funded under: FP5-EAECTP C


The objectives of the project consisted of a substantial contribution to the development of a long-term reliable fibre-optic monitoring system for nuclear waste repositories. The types of fibre-optic sensors were limited to three basic safety parameters to be measured: radiation level (integrated and distributed), temperature (distributed) and hydrogen sensing. The objectives were contained in the following work areas: specification of requirements and the development of a qualification methodology for long-term monitoring systems; development of suitable fibre-optic sensing systems for the three parameters, based on current technology and prototype systems; investigation of the potential for renewable sensor systems by placing the fibres for distributed dosimetry and temperature in small (stainless) tubes as an answer to long-term reliability and future improvements.
Based on preliminary studies on fibre-optic sensors for the measurement of radiation dose, temperature and hydrogen, fibre-optic monitoring systems were developed together with a qualification methodology fulfilling the requirements and operational constraints. The work was organised in several work packages consisting of theoretical and practical work structured around the qualification methodology and the three basic sensing systems. Important issues such as the operation in radiation fields for temperature sensing systems was addressed both in laboratory and in-situ work. Distributed or integrated dosimetry on the other hand was tested with respect to robustness for environmental parameters.

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