Abstract: A method for use during starting and/or low-load operation of a once-through boiler. The method includes the steps of generating steam in a steam generator; separating water from the steam in a moisture separator; heating the steam in a superheater and feeding the steam to a high-pressure turbine; returning expanded steam from the high-pressure turbine to a reheater for heating before supplying the steam to an intermediate-pressure turbine; supplying the separated water from the moisture separator to a reheater flashbox; and feeding stream separated in the reheater flashbox to the reheater.

Abstract: The invention relates to a carton tray with a separate carton cover, the side walls of which form a continuous frame around the edges of the cover base and fit the upper end of the tray which is provided with downwardly foldable edge flaps intended to engage with the inside of the frame formed by the side walls of the cover when placed on the tray. The side walls of the cover are extended at their ends with end flaps lying along the inside of the frame formed by the side walls. At least some of the end flaps have a locking edge turned upwardly towards the base of the cover, said edges being substantially parallel to the cover base and at a predetermined distance below it.