approved the Mandela Rules revision. Professor Mendez view of
the 15-day limit has been informed by the international consensus achieved in 2015. His current view in this regard is largely
like limitations suggested domestically by the Arbour Commission and the Ashley Smith Inquest.
 I am satisfied that the fact that Professor Mendez made
different statements about indefinite segregation does not affect
the weight attaching to his opinion concerning the inappropriateness of a person spending more than 15 days in segregation
and his evidence generally.
 I am satisfied based on the evidence that the Mandela
Rules represent an international consensus of proper principles
and practices in the management of prisons and the treatment
of those confined.
Treatment of the Expert Evidence
 Both sides submitted affidavits from experts. I do not
reject the totality of the evidence of any of these experts. However, some aspects of the evidence of the experts are entitled to
more weight than others.
The Statutory Scheme for Administrative Segregation
 The legislative framework of administrative segregation
is established in ss. 31-37 of the Corrections and Conditional
Release Act. There are other statutory provisions that relate
to administrative segregation. There are also regulations and
commissioner’s directives that give further structure to the administrative segregation regime.
 The purpose of administrative segregation is the maintenance of security of the penitentiary or the safety of any person,
within the penitentiary. See s. 31(1) of the Corrections and Conditional Release Act.
 Section 31(2) of that Act provides for release from administrative segregation at the earliest appropriate time.
 Section 31(3) sets the considerations which justify a deci-
sion to segregate. Those considerations are:
— the institutional head is satisfied that there is no reasonable
alternative to administrative segregation; and
— the institutional head believes on reasonable grounds that
— the inmate has acted, has attempted to act or intends
to act in a manner that jeopardizes the security of the
penitentiary or the safety of any person and allowing
the inmate to associate with other inmates would