Internal inspection

In the internal inspection of the pressure device, it must be checked that the pressure device and its accessories do not have defects or features that endanger the safe use of the pressure device. Inspections of the piping related to the pressure device can be replaced by monitoring the pressure device.

Internal inspection also means performing an external inspection of the pressure device. An internal inspection is performed on the entire pressure vessel. The inspection pays attention to welding joints, possible corrosion, cracks, erosion, overheated points, discontinuities and sharp edges. In addition, the condition of the internal equipment and the support structures are checked. The large shut-off and safety valves must be opened to perform the inspection. In connection with the internal inspection, the parts of the hot components are inspected, which are dimensioned according to the creep strength.