Inspection of Boiler Water Wall Tubes using Electromagnetic Inspection Technique.Yesterday (manual) and Today (automated)

摘要

1. The VertiScan System proved effective in identifying general wall loss and local thinning. Thinning was confirmed by ultrasonic thickness readings. Thermal Fatigue cracking was confirmed visually and MPI inspections. 2. The scaffold gap must be a minimum of 10" from the crown of the tubes for the VertiScan system to pass by 3. The VertiScan System provides best value when there is no scaffold in the boiler. Generally one full water wall can be scanned per shift if just one system is in use.