Method for installing and/or maintaining a flange connection, and tool and use

A method for installation and/or maintenance of a flange connection comprising a plurality of screw connections with a manually movable tool at least comprising a screw tensioning structure, a processing unit and a screw identification sensor, wherein the method comprises:

• assigning a one-to-one identification to each screw connection of the flange connection;
• determining a respective screw connection to be tensioned;
• positioning the tool on the respective screw connection to be tensioned;
• identifying the respective screw connection by the screw identification sensor;
• releasing the screw tensioning structure by the processing unit;
• and
• tensioning the respective screw connection by the screw tensioning structure;
• wherein it is checked whether the tool or the screw tensioning structure is placed correctly on the respective screw connection;
• and
• wherein the screw tensioning structure is released when the result of this check is positive and/or the screw tensioning structure is blocked or stopped when the result of this check is negative;
• wherein:
• parameters of the tensioning of the respective screw connection are documented by the processing unit;
• and/or
• at least one parameter of the tensioning of the respective screw connection is documented on the flange connection;
• and/or
• at least one parameter of the tensioning of the respective screw connection is signalled and/or displayed by a signal unit, wherein the signalling and/or this display takes place after each tensioning process and/or after the tensioning process of the last screw connection in a tensioning sequence;
• and/or
• a conclusion protocol and/or an error protocol and/or recommendations for the correction of defective screw connections are created and signalled and/or displayed by a signal unit, wherein this signalling and/or this display takes place after each tensioning process and/or after the tensioning process of the last screw connection in a tensioning sequence.