- A multi-phase heat exchanger cleaning approach was devised which started with a low-volume 60,000 PSI (4,000 BAR) water jetting system utilising intelligent metal lances which conformed to the shape of the tubes while drilling and jetting simultaneously.
- As acid-type chemicals are not recommended on titanium, a biodegradable wash was used to remove traces of scale from the tube walls once a bore was created.
- A miniature rotating darTT was fired around the bend before a video probe sent back to a 3D image to confirm no damage to interior bores.
- An alternative heat exchanger cleaning system to shatter the scale was being simultaneously developed if the procedure was unsuccessful.
- Careful use of bespoke jets and turbines and the lack of aggressive acids meant the titanium suffered no damage and was polished to a pristine condition after the heat exchanger cleaning was completed.