49. The Tribunal may, on application, review or revoke a decision or an order it has rendered or made
(1) if a new fact is discovered which, had it been known in sufficient time, could have warranted a different decision;
(2) if an interested party, owing to reasons considered sufficient, could not make representations or be heard; or
(3) if a substantive or procedural defect is of a nature likely to invalidate the decision.
In the case described in subparagraph 3 of the first paragraph, the decision or order may not be reviewed or revoked by the member who rendered or made it.