The document is to be applied for the design of radioisotope laboratories where unsealed radioactive material is handled in a notifiable way or requiring an acceptance by the authorities. It is also to be applied in those cases, where if necessay, additional sealed sources are handled and for the design of function related special rooms. As far as the unrationed allowances take into account the sum formula for sealed radiactive materials this document is not to be applied.
DIN 25425-1:1995 history
2021DIN 25425-1:2021 Radioisotope laboratories - Part 1: Rules for design