Although there is no visitor traffic in winter, there is still a lot to do. We have to prepare our steam locomotive 50 3570 for the upcoming boiler overhaul. One of the measures to be taken is to open the so-called steam dome. This is located at the top of the boiler and contains a circular cover, which is fastened with 40 bolts the size of a thumb. These must all be unscrewed and the cover, which weighs around 50 kilos, must be moved aside at a lofty height. Underneath sits the steam regulator. This is a valve that is operated from the driver's cab and allows the steam from the boiler to enter the locomotive's drive cylinders. The steam regulator must be removed and overhauled. On the following picture you can see the opened steam dome and in the middle the still installed steam regulator: