The new regulation for accelerators and thermonuclear devices

It is shown in how far the new Radiation Protection Ordinance introduces special rules for the accelerators and thermonuclear devices. Furthermore, the draft is compared with the First Ordinance, and the importance of the extension of the Ordinance for those concerned and some practical consequences are discussed. The result is that the legal security for the operator and the radiation protection for the neighbouring population are increased, while more work, also in a technical sense is expected by the authorities. Practical consequences of the new Ordinance for accelerators are particularly the extension of the controlled areas and the resulting measuring problems for very low doses and activity concentrations. The exact rules 'for permanent facilities' e.g. 'permanent' screening, would result in considerable additional expenses for large accelerators if the rules are strictly interpreted. Certain difficulties are exemplified by the μ mesons, which may result if the regulations are interpreted conservatively, as strong gradients in the radiation field are to be expected in fence vicinity of experimental zones and therefore higher doses than 150 mrem p.a. might result. (orig./HP)