30. Section 284 of the Principal Act is repealed and the following section substituted:
“284. Where a person appeals, or purports to appeal, under this Act—
(a) to the Appeals Board;
(b) to the Administrative Appeals Tribunal; or
(c) against a determination or decision of the Appeals Board, or the Administrative Appeals Tribunal, to the Supreme Court;
and it appears to the Board, the Tribunal or the Court, as the case may be—
(d) that the appeal, or purported appeal, or the decision, or the purported decision, against which the appeal, or purported appeal, has been brought is affected by a failure to comply with a requirement of this Act; and
(e) that to exercise the powers conferred by this section would not be unjust or inequitable;
the Board, Tribunal or Court may excuse the failure by ordering that, subject to such conditions as may be specified in the order by the Board, Tribunal or Court, the requirement concerned be dispensed with to the necessary extent.”.