The article reports that when turning off the carrying pot on a decommissioned hanging riser pipe in the shaft of a dewatering site in the Ruhr area, the threaded connection in the spigot end and socket was damaged, which made emergency welding on the pipe necessary. Topics include examines in order to be able to safely carry out measure above the shaft on the grass hanging bank, the line had to be disconnected beforehand by means of a spiral cut on the 5th level using autogenous flame cutting.