On 10 July 2006, the boiler was hydraulically tested at the manufacturer's factory at one-and-a-half times working pressure and was passed safe. On 11 January 2008 the boiler passed its first steam test, in tests carried out by an external boiler inspector. The boiler was noted by the inspector to be a very rapid boiler, boding well for use on the main line. As also noted by the inspector, being brand new, "Tornado's" boiler exhibited no leaks of any kind during the test, in contrast to heritage restorations.