Method and device for taking a sample in a steam generator

A method for taking a sample of a deposit on a secondary side of a pipe base plate of a steam generator of a nuclear power plant, which comprises the steps of:

• removing a steam generator pipe from the pipe base plate for exposing a hot pipe bore which penetrates the pipe base plate;
• introducing a removal tool of a device for taking the sample into the hot pipe bore from a primary side of the pipe base plate being disposed opposite the secondary side;
• mechanically removing part of the deposit by way of the removal tool as the sample;
• in an assembled state, rotating the removal tool about a drive axis extending parallel to a center longitudinal axis of the hot pipe bore for removing the sample;
• adjusting the drive axis with reference to the center longitudinal axis in a radial direction and is advanced in a circumferential direction for removing the sample;
• conveying the sample through the hot pipe bore to the primary side and the sample is removed out of the steam generator;
• and
• removing the removal tool out of the steam generator.