Radiological Protection Ordinance
(RPO)

¹ Su­per­vised areas means areas which are sub­ject to spe­cif­ic re­quire­ments for the pur­pose of pro­tect­ing against ex­pos­ures to ion­ising ra­di­ation from the op­er­a­tion of in­stall­a­tions or the hand­ling of sealed ra­dio­act­ive sources.

² The fol­low­ing are to be es­tab­lished as su­per­vised areas:

a.

rooms and ad­ja­cent areas in which in­stall­a­tions are op­er­ated without a full or par­tial pro­tec­tion sys­tem;

b.

zones of type 0 as spe­cified in An­nex 10;

c.

areas in which per­sons may ac­cu­mu­late an ef­fect­ive dose of more than 1 mSv per cal­en­dar year from ex­tern­al ra­di­ation ex­pos­ure.

³ The li­cence hold­er must en­sure that, if el­ev­ated am­bi­ent dose rates oc­cur dur­ing the op­er­a­tion of in­stall­a­tions or the hand­ling of sealed ra­dio­act­ive sources, only au­thor­ised per­sons can be present in su­per­vised areas.

⁴ The li­cence hold­er must mon­it­or com­pli­ance with the guid­ance val­ues for am­bi­ent dose rates and com­pli­ance with pro­tec­tion meas­ures and safety pro­vi­sions with­in su­per­vised areas.

5 Su­per­vised areas must be marked as spe­cified in An­nex 8.

⁶ The es­tab­lish­ment of su­per­vised areas is not ne­ces­sary for oc­cu­pa­tion­ally ex­posed air­crew.

⁷In rooms in which only com­pact dent­al X-ray sys­tems are op­er­ated, the es­tab­lish­ment of su­per­vised areas is not ne­ces­sary.