Clause 117

A person sentenced to detention under this Act shall, unless otherwise provided for in regulations, serve his sentence in detention barracks.

A person shall not in any event be required to serve any part of a sentence of detention in a military or civil prison except that in such cases and subject to such conditions as may be specified in regulations a person serving such a sentence may be temporarily detained in a military or civil prison for any period not exceeding seven days and thereafter shall be transferred to detention barracks.