18 CFR 385.716 - Reopening (Rule 716).
(a)General rule. To the extent permitted by law, the presiding officer or the Commission may, for good cause under paragraph (c) of this section, reopen the evidentiary record in a proceeding for the purpose of taking additional evidence.
(1) Any participant may file a motion to reopen the record.
(2) Any motion to reopen must set forth clearly the facts sought to be proven and the reasons claimed to constitute grounds for reopening.
(c)By action of the presiding officer or the Commission. If the presiding officer or the Commission, as appropriate, has reason to believe that reopening of a proceeding is warranted by any changes in conditions of fact or of law or by the public interest, the record in the proceeding may be reopened by the presiding officer before the initial or revised initial decision is served or by the Commission after the initial decision or, if appropriate, the revised initial decision is served.