10 C.F.R. § 820.4
A DOE Official may not perform functions provided for in this part regarding any matter in which he has a financial interest or has any relationship that would make it inappropriate for him to act. A DOE Official shall withdraw at any time from any action in which he deems himself disqualified or unable to act for any reason. Any interested person may at any time request the General Counsel to disqualify a DOE Official or request that the General Counsel disqualify himself. In the case of an enforcement adjudication, a motion to disqualify shall be made to the Presiding Officer. The request shall be supported by affidavits setting forth the grounds for disqualification of the DOE Official. A decision shall be made as soon as practicable and information may be requested from any person concerning the matter. If a DOE Official is disqualified or withdraws from the proceeding, a qualified individual who has none of the infirmities listed in this section shall replace him.
10 C.F.R. § 820.4