(1) The safeguard duty levied under rule 10 or rule 12 shall take effect from the date of publication of the notification in the Official Gazette imposing such duty.

(2) Notwithstanding anything contained in sub-rule (1), where a provisional duty under sub-section (2) of section 8C of the Act has been levied and where the Director General has recorded a finding that increased imports have caused or threaten to cause "market disruption" to domestic industry, it shall be specified in the notification under sub-rule (1) that such safeguard duty shall take effect from the date of levy of the provisional duty.