(a) Recusal. A Commissioner or a Judge may recuse himself from a proceeding whenever he deems such action appropriate.

(b) Request to withdraw. A party may request a Commissioner or a Judge to withdraw on grounds of personal bias or other disqualification. A party shall make such a request by promptly filing an affidavit setting forth in detail the matters alleged to constitute personal bias or other grounds for disqualification.

(c) Procedure if Commissioner or Judge does not withdraw. If, upon being requested to withdraw pursuant to paragraph (b) of this section, the Commissioner or the Judge does not withdraw from the proceeding, he shall so rule upon the record, stating the grounds for his ruling. If the Judge does not withdraw, he shall proceed with the hearing, or, if the hearing has been completed, he shall proceed with the issuance of his decision, unless the Commission stays the hearing or further proceedings upon the granting of a petition for interlocutory review of the Judge's decision not to withdraw.