We have now moved on into the Boiler House at Papplewick Pumping Station near Nottingham. Even a location with the potential for dirt as this, was built and maintained to an exceptionally high standard of quality and cleanliness.
V1
This shot is looking along the fronts of the six Lancashire boilers which were needed to keep the engines supplied with sufficient steam when they were working at maximum power. The Boiler House door in my last upload can be seen on the right.
V2
Today, the engines have been disconnected from their pump rods and therefore are not working under load, so they only need one boiler working to keep them rotating. The Lancashire is a classic British boiler design which was built and shipped in their thousands all over the world. There are two large diameter fire tubes which are surrounded by boiler water, the hot gasses from it are then passed back through a tunnel under the boiler to the front, where they are turned left and right and go back along the sides of the boiler to the other end again where they then pass into a manifold which then goes underground to the large chimney some distance away. The bottom half of the boiler is not insulated, so the hot gasses are in contact with the metal of the boiler and therefore heat from the gas is conducted into the boiler water. The top half of the boiler is thermally insulated.
V3
The fireman (Stoker in the Navy) is shovelling coal onto the fire grate which extends for approximately three metres into the firetube.
V4
Two very accomplished retired engineers discussing the finer points of the Lancashire Boiler. The steps at the back are to gain access to the top of the boilers and the Engine House.
V5 & V6
These shots are of two of the adjustable steam safety valves located on top of the boiler. They were adjusted by sliding the weights along the levers which held the valve down onto it's seat.
V7 & V8
At the rear of the boilers are the main steam manifolds and the boiler isolation valves. The two pipes going through the wall are the steam delivery pipes to the engines, which are through the door behind the lady. The chain wheels are part of the mechanisim which closes off each of the boiler flues from the main hot gas manifold to the chimney, when the boilers are out of use.
Spike.
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