Where an order, authorisation or warrant under this Chapter or Chapter 2 of this Part of this Act grants power to find a child and to keep him in a place of safety, such order, authorisation or warrant may be implemented as if it were a warrant for the apprehension of an accused person issued by a court of summary jurisdiction; and any enactment or rule of law applying to such a warrant shall, subject to the provisions of this Act, apply in like manner to the order, authorisation or warrant.