Part of the modifications to Tornado to accept the new European Train Control System (in cab signalling) presently being installed during Tornado's overhaul under a Network Rail funded programme, is the addition of a second turbo-alternator to reinforce the locomotive's power supplies to cope with the increased electrical demand from the ETCS electronics. The new turbo-alternator is similar to the existing one and will be mounted on the running plate behind the Driver's side smoke deflector as a mirror image of the existing turbo-alternator which is behind the Fireman's side smoke deflector. The new machine will obviously require a new steam supply from a control valve in the cab.
Luckily the steam stand (photo Backhead showing steam stand) which is the manifold which carries the steam valves in the cab which supply steam to various systems including air pumps and the vacuum brake ejector had a spare outlet on the RH end of the casting. However this was not in a convenient position for the new turbo-alternator, so the existing outlets have been re-arranged, and the boiler pressure gauge supply moved to the end.
Another change that is required is to the labels which identify each of the valves. We have just taken delivery of the new label plate which is made from 6mm thick engraving brass. The plate at 33 inches long was too big for our regular engravers, Deco Trophies at Bishop Auckland, to cut out so a laser profile was obtained and and supplied to Deco for engraving. This will now be mounted in the cab roof as per the original label plate.