Acts not to be invalidated by vacancy, informality etc.

No act done or proceedings taken under this Act by the Board or a committee appointed by the Board shall be invalidated merely on the ground of— (a) any vacancy of a member or any defect in the constitution or reconstitution of the Board or a committee thereof; or (b) any defect or irregularity in the appointment of a person as a member of the Board or of a committee thereof; or (c) any defect or irregularity in such act or proceedings, not affecting the substance.