DIN 6847-2:2021-06: medical electron accelerators. Pt. 2: structural requirements for radiation protection and requirements for testing of approval conditions for operation

This document is applicable to the construction of electron accelerator facilities for the application of bremsstrahlung with limiting energies between 3 MeV and 50 MeV and electron radiation with energies between 3 MeV and 50 MeV in medical radiation therapy. The document shall also be applied for the operation of electron accelerator facilities operated in the mode without compensation filter and for the application in intensity modulated radiotherapy (IMRT). This document is not applicable to the construction of electron accelerator facilities for use in tomotherapy and robot-assisted radiotherapy. The responsible national standardisation body is the working committee NA 080-00-02 AA "Radiation protection" in the DIN Standards Committee Radiology (NAR). This document supersedes DIN 6847-2:2014-03. Compared to DIN 6847-2:2014-03, the following changes have been made: a) change of title; b) adaptation to the new radiation protection law; c) change of directional factors and stay factors; d) inclusion of considerations on skyshine; e) inclusion of a statement on air activation; f) revision of sections 12 and 13; g) inclusion of tables on Figure 3, Figure 4 and Figure 5.