45.—(1) Where it appears desirable, for the maintenance of good order or discipline or in his own interests, that a prisoner should not associate with other prisoners, either generally or for particular purposes, the governor may arrange for the prisoner’s removal from association accordingly.
(2) A prisoner shall not be removed under this rule for a period of more than 3 days without the authority of a member of the board of visitors or of the Secretary of State. An authority given under this paragraph shall be for a period not exceeding one month, but may be renewed from month to month except that, in the case of a person aged less than 21 years who is detained in prison such an authority shall be for a period not exceeding 14 days, but may be renewed from time to time for a like period.
(3) The governor may arrange at his discretion for such a prisoner as aforesaid to resume association with other prisoners, and shall do so if in any case the medical officer or a medical practitioner such as is mentioned in rule 20(3) so advises on medical grounds.
(4) This rule shall not apply to a prisoner the subject of a direction given under rule 46(1).