A method for shortening the start-up of a steam turbine

The invention relates to a method for shortening the start-up of a steam turbine (2) comprising a turbine housing and provided inside of the turbine housing turbine components, which come in operation with the turbine housing by passing superheated steam into contact, and a turbine shaft (6, 7), the turbine housing, the axially interspersed, said between the turbine shaft (6, 7) and the turbine housing sealing areas (8) are formed which are in the operation of the steam turbine (2) applied with sealing steam, and the steam turbine (2) during a stop of the steam turbine ( 2) thermal energy whereby the interior of the turbine housing (during the stoppage of the steam turbine 2) sealing steam is supplied to heat the provided in the interior of the turbine housing turbine components and / or keep warm is supplied.