An officer who in the
course of his duty is entrusted with any key or other locking or unlocking
device or mechanism or who is familiar with any security process or
procedure —
(a)
shall not remove any such item from the prison or make known any such process
or procedure to any person without the prior authority of the superintendent;
(b)
shall not part with the possession of or leave any such item unattended or
lying about; and
(c)
shall, when leaving the prison or on the completion of his duty, unless
security procedures require otherwise, deliver such item to the officer
authorised to receive them and unless he has made such delivery, he shall not
be permitted to leave the prison without the permission of the superintendent.