Portable X-ray fluorescence spectrometer. Radiation hazard during utilization

The question in relation to radiation hazards of a portable X-ray fluorescence spectrometer is: In which time and for which instrument the hand dose is surmounted according radiation protection recommendations? The contribution shows the complexity of radiation protection. In each case of application the user should always be aware which dose leaves the equipment and how this radiation is absorbed. This is the only way of comparison with the legal dose limits.