Boilers. In place or at the factory? Do they need a control programmer? I've done a few boiler control systems. I like that kind of work as it's a little outside of the ho hum day to day control system programming that i now do. I guess if I did a few more they would become ho hum too though
If they are on site and running I think it makes for a more dynamic image. If not, it is what it is. The same rules of photography apply to them as anything else. Morning and afternoon light is best but depending on where in the plant the boiler is located one may be preferential to the other. Use the angle of the shot to minimize the crappage in the image. With any luck the deareator will be close by and you can get a little steam plume in the image. That will give the viewer the sense that it's running.
Here's a couple of snapshots of an old, but refurbished with new technology, boiler in place and running (note that I didn't follow any of my advice above. I missed the steam plume for one and shot and the wrong time of day for another.) In hindsight I should have shot the Lo-Nox burner (2nd shot) wider and included the fuel system shutdown valves (yellow things at the bottom) for a cool color contrast.
