Cleaning and Replenishing
BR Standard 4 Tank 80136 at Grosmont between journeys.
An engineer has just cleaned out the smokebox, and is sweeping the last of the ash and soot from the front parts of the engine.
Next they build up a good head of steam, and blow it all off very fast (and loudly) to clean out the boiler.
Finally, it is filled up with water and coal, ready for the next run.