Section 51

assaults, wilfully insults or obstructs an adjudicator or any witness or officer of a tribunal during a sitting of a tribunal or while an adjudicator, witness or officer is on his way to or from such a sitting;

assaults or wilfully insults or obstructs any person in attendance at a sitting of the tribunal;

wilfully interrupts or otherwise misbehaves at a sitting of the tribunal; or

without lawful excuse disobeys any order or direction of a tribunal (not being an order referred to in section 38) during a sitting of the tribunal, is guilty of an offence and liable on conviction to a fine not exceeding $1,000

or to imprisonment for a term not exceeding 6 months.