Nuclear Energy Ordinance
(NEO)

¹ In or­der to guar­an­tee long-term safety, the site for a deep geo­lo­gic­al re­pos­it­ory must meet the fol­low­ing re­quire­ments:

a.

suf­fi­cient ex­tent of suit­able host rock;

b.

fa­vour­able hy­dro-geo­lo­gic­al con­di­tions;

c.

long-term geo­lo­gic­al sta­bil­ity.

² A deep geo­lo­gic­al re­pos­it­ory must be de­signed to en­sure that:

a.

it com­plies by ana­logy with the prin­ciples of Art­icle 10 para­graph 1;

b.

it guar­an­tees long-term safety through mul­tiple pass­ive safety bar­ri­ers;

c.

steps to ease sur­veil­lance and re­pairs of the re­pos­it­ory, or for the re­cov­ery of the waste, in no way im­pair the ef­fect­ive­ness of the pass­ive safety bar­ri­ers after clos­ure of the re­pos­it­ory;

d.

it can be closed with­in a peri­od of a few years.

³ EN­SI shall spe­cify de­tailed design prin­ciples for deep geo­lo­gic­al re­pos­it­or­ies in guidelines.¹¹