Thermal and Corrosion Monitoring Systems
A new corrosion and thermal scanner system is now fully operational on Unit 1 boiler at Drax Power Station UK. This system, comprising 164 sensor locations, monitors both the corrosion and thermal behaviour of the fireside tube walls on both sidewalls of this 660 megawatt sub-critical unit.
The system completely replaces the first commercial scanner system that was originally installed in 2001. Although this original system was still operational, the hardware was no longer compatible with the latest scanner electronics and sensors. System replacement meant that all five scanner systems at Drax are now of the latest scanner designs.
The new system incorporates five air-cooled VTER corrosion probes installed in the sidewalls at the same level as the superheater and reheater tubing.