An inmate must not operate a bell, hooter, siren or whistle used--
(a) for calling to muster, or
(b) for giving notice of a fire or other emergency, or of a fire or other emergency drill, or
(c) for giving notice of any other correctional centre routine,unless the inmate is authorised to do so by the governor or a correctional officer or does so with other reasonable excuse.
Note : Failure by an inmate to comply with this clause is a correctional centre offence.