Safeguard duty commencement: takes effect on notification, or retroactively from provisional levy when market disruption is found. The safeguard duty takes effect from the date of publication of the notification in the Official Gazette; where a provisional duty has been levied and the Director General finds that increased imports have caused or threaten to cause market disruption, the notification may specify that the safeguard duty shall take effect from the date of levy of the provisional duty.