12   Effect of segregated or protective custody direction

(1)  An inmate subject to a segregated or protective custody direction is to be detained:

(a)  in isolation from all other inmates, or

(b)  in association only with such other inmates as the Commissioner (or the general manager of the correctional centre in the exercise of the Commissioner’s functions under section 10 or 11) may determine.

(2)  An inmate who is held in segregated or protective custody:

(a)  is not to suffer any reduction of diet, and

(b)  is not to be deprived of any rights or privileges other than those determined by the Commissioner (or the general manager in the exercise of the Commissioner’s functions under section 10 or 11), either generally or in a particular case, and other than those the deprivation of which is necessarily incidental to the holding of the inmate in segregated or protective custody.