In this Chapter, except where otherwise expressly provided—

• “the 1989 Act” means the [1989 c. 45.] Prisons (Scotland) Act 1989;

• “contracted out prison” and “the contractor” have the meanings given by section 106(4) above;

• “contracted out functions” and “directly managed prison” have the meanings given by section 112(7) above;

• “custodial duties” means custodial duties at a contracted out or a directly managed prison;

• “escort functions” has the meaning given by section 102(1) above;

• “prison” includes—

  1. a

     any prison other than a naval, military or air force prison; and

  2. b

     a remand centre or young offenders institution within the meaning of section 19 of the 1989 Act;

• “prison officer” means an officer of a directly managed prison;

• “prison rules” means rules made under section 39 of the 1989 Act;

• “prisoner” means any person who is in legal custody or is deemed to be in legal custody under section 215 or 426 of the [1975 c. 21.] Criminal Procedure (Scotland) Act 1975;

• “prisoner custody officer” has the meaning given by section 114(1) above;

• “prisoner escort arrangements” has the meaning given by section 102(4) above; and

• “sub-contractor” has the meaning given by section 106(4) above.

Any reference in this Chapter to custodial duties at a contracted out or directly managed prison includes a reference to custodial duties in relation to a prisoner who is outside such a prison for temporary purposes.