Nuclear Energy Ordinance
(NEO)

The fol­low­ing meas­ures must be taken in or­der to guar­an­tee nuc­le­ar safety.

a.

Es­tab­lished or proven high-qual­ity pro­cesses, ma­ter­i­als, tech­no­lo­gies and or­gan­isa­tion­al struc­tures and pro­cesses must be used in con­nec­tion with design, con­struc­tion, com­mis­sion­ing and op­er­a­tion of nuc­le­ar in­stall­a­tions. This ap­plies es­pe­cially to the areas of plan­ning, man­u­fac­ture, test­ing, op­er­a­tion, sur­veil­lance, main­ten­ance, qual­ity as­sur­ance, eval­u­ation of op­er­a­tion­al ex­per­i­ence feed­back, er­go­nom­ic design as well as ba­sic and ad­vanced train­ing and pro­fes­sion­al de­vel­op­ment.

b.

Any de­vi­ations from nor­mal op­er­a­tion should be countered as far as pos­sible by en­sur­ing that the be­ha­viour of the in­stall­a­tion is self-reg­u­lat­ing and fault-tol­er­ant. Wherever pos­sible, the be­ha­viour of the in­stall­a­tion must be in­her­ently safe. The term «in­her­ently safe» is un­der­stood to mean that a giv­en sys­tem func­tions safely on its own, i.e. without the sup­port of aux­il­i­ary sys­tems.

c.

In or­der to deal with ac­ci­dents, the in­stall­a­tion must be de­signed in such a man­ner as to en­sure that the sur­round­ings are not ex­posed to im­per­miss­ible ra­di­olo­gic­al ef­fects. For this pur­pose, the in­stall­a­tion must be equipped with both pass­ive and act­ive safety sys­tems.

d.

Ad­di­tion­al tech­nic­al, or­gan­isa­tion­al and ad­min­is­trat­ive meas­ures must be taken to pre­vent and mit­ig­ate the con­sequences if harm­ful quant­it­ies of ra­dio­act­ive sub­stances might be re­leased in case of an ac­ci­dent