Re: Off the Rails - Train Stuff
Posted: Mon Dec 23, 2019 6:16 pm
it depends what you are referring to.
There are a series of inspection doors at various places on and around the boiler of a locomotive that allow inspection of internal condition of the water space (water jacket) around the foundation ring at the base of the firebox as well as the firebox crown. It allows inspection of overall condition, checking of stays and for inspection of whether any wear through limscale scouring has ocurred and if so, how much.
There are also the firehole door, smokebox door and dampers on the ashpan that, when open, allow cold air in to the smokebox end of the fluetubes, firebox end of the flue tubes or the ashpan area.
As with anything, rapid cooling is a problem for a loco boiler, just as a series of cold-hot-cold cycles causes issues as the A1 trust found with Bornado, sorry, I meant Tornado.
There are a series of inspection doors at various places on and around the boiler of a locomotive that allow inspection of internal condition of the water space (water jacket) around the foundation ring at the base of the firebox as well as the firebox crown. It allows inspection of overall condition, checking of stays and for inspection of whether any wear through limscale scouring has ocurred and if so, how much.
There are also the firehole door, smokebox door and dampers on the ashpan that, when open, allow cold air in to the smokebox end of the fluetubes, firebox end of the flue tubes or the ashpan area.
As with anything, rapid cooling is a problem for a loco boiler, just as a series of cold-hot-cold cycles causes issues as the A1 trust found with Bornado, sorry, I meant Tornado.