Next 15th April we are opening the new season for our ITR service (Technical Inspection of Receiver Tubes) for Parabolic Trough CSP plants. This season will be open until September 2021 and reserves will be managed in a FIFO (first in, first out) sequence. CENER is a worldwide recognized center playing in the CSP field and has been developing and carrying out this inspection system since more than 5 years, continuously improving it to ensure the highest accuracy and robustness in the market.
The ITR service is a thermographic inspection of receiver tubes performed with a Terrestrial Inspection Device at a speed of up to 20 km/h (72 receivers per min) allowing for the inspection of a whole 50 MW + 7h TES plant in three working days during regular plant operation. Near-distance high-resolution thermography combined with advanced post-processing techniques based on the combination of statistical analysis and fully validated physical model utilization provides the classification of each and every tube in the pant according to its operative condition. Tubes in good, uncertain or bad conditions, showing broken glass or vacuum loss, are identified and listed according to the clients’ criteria. Not only measured temperature which may critically depend on operation and meteorological conditions is delivered for each tube, but also an actual degradation status indicator, showing its real condition against an ideally operating tube. Further results exploitation taking advance of CENER’s large experience and expertise in the analysis of CSP plants is available on demand (e.g. creation of a solar field digital twin, analysis of the impact in a representative year production, etc.).
At present, in addition to the ITR service described, CENER is referent in: Calibration of field pyranometers and pyrheliometers, on-site audit of solar radiation measurement stations, performance testing and ageing of solar thermal power plant components (receiver tubes, reflectors, complete parabolic trough collectors or loops), on-line HTF Degradation sensor, and HTF degradation and hydrogen analysis.