46 CFR §502.230

1. (a)Reopening by the Commission. After an initial decision by the presiding officer, or in a matter otherwise pending before the Commission, but before issuance of a Commission decision, the Commission may, after petition and reply in conformity with paragraphs (b) and (c) of this section, or upon its own motion, reopen a proceeding for the purpose of taking further evidence.
2. (b)Motion to reopen. A motion to reopen shall be served in conformity with the requirements of subpart H and will set forth the grounds requiring reopening of the proceeding, including material changes of fact or law alleged to have occurred.
3. (c)Reply. Within ten (10) days following service of a motion to reopen, any party may reply to such motion.
4. (d)Remand by the Commission. Nothing contained in this rule precludes the Commission from remanding a proceeding to the presiding officer for the taking of addition evidence or determining points of law. [Rule 230.]