The Agency implements Tier 3 Oil Spill Response System, as well as regulates and monitors Tiers 1 and 2 which are oil spill response system of individual oil companies and co-operatives (Clean Nigeria Associates) respectively. 

The levels of oil spill response managed by the three-tier systems are as follows:-

Tier One: Operational type spills

Less than or equal to 7 metric tones (50 barrels), that may occur at or near a company’s own facility, as a consequence of its own activities. 

An individual company would typically, and under OPRC, provide resources to respond to this size of spill.

Tier Two: A larger spill

Greater than 7 metric tonnes ( 50 barrels) but less than 700  metric tonnes (5000 barrels), in the vicinity of a company’s facility where resources from another company, industry and possible government response Agencies in the area can be called in, on a mutual aid basis.  

The company will participate in local co-operatives such as the Clean Nigeria Associates (CNA) where each member pools its Tier 1 resources and has access to any equipment which have been jointly procured for the co-operative.

Tier Three: The large spill

Greater than 700 metric tonnes (5000 barrels), where substantial further resources will be required and support from a National (Tier 3) or International Co-operative  Stockpile,  like the Oil Spill Response Limited (OSRL), may be necessary. 

Such operation is subject to government control and direction. It is important to recognize that a spill which receives a Tier 3 response may be close to, or remote from company facilities.