LarryG
Western Thunderer
This is pretty well how things were with BR cleaners (I was one). We used a ladder with tank locos and so the firebox sides were within easy reach to clean. There were hot things on many fireboxes (safety valves on non-GWR locos) and we avoided such areas. Reaching over the top of the things mounted on the tank tops to reach the sloping boiler was dodgy becasue one could burn oneself on the safety valve or top feed pipes. Cleaning the front ring of the boiler was done by clambering up onto the running plate so we cleaned as far as we could reach.One of my favourite touches is the relatively clean boiler barrel ring nearest the smoke box, and then the other part of the boiler has been left untouched and grimy - including the safety valve cover. I guess the cleaner(s) at the time felt it too much effort to reach, although they did manage to wipe the side of the firebox!
Paint near the cab doorway was usually damaged by footwear, but the lower area was often grotty from use of the slacker pipe while washing down the cab floor and coal dust from the coaling plant which seemed to eat into paintwork if left for any length of time. Cleaning the back of the coal bunker was often a waste of time because the paint was too damaged from track dust and what-not. Smokeboxes were painted with a different (heat-resistant) paint and could not be cleaned after even a short time in traffic. Same with running plate. If in doubt, imagine what you would do