Library / Page 1 of 67 MIDSTREAM AND DOWNSTREAM PETROLEUM SAFETY AND ENVIRONMENTAL REGULATIONS, 2025
Page 1 of 67 MIDSTREAM AND DOWNSTREAM PETROLEUM SAFETY AND ENVIRONMENTAL REGULATIONS, 2025

Page 44 of 67
Page 44 of 67 
 
(vii)  any other information relevant to consideration of the decommissioning 
and abandonment programme; 
(g) an environmental evaluation study report, supporting the chosen 
decommissioning and abandonment option; 
(h) a comparative assessment of alternative decommissioning and abandonment 
options, or otherwise disposal options, which shall analyse the impacts of 
considered listed options against the following criteria —   
(i) safety, 
(ii) environmental, 
(iii) technical, including risks of major project failure, 
(iv) societal, 
(v) economic, and 
(vi) security, 
based on qualitative and quantitative assessment and clearly indicating the 
rationale for the chosen decommissioning and abandonment option or otherwise 
disposal options; 
(i) report of any required interested party consultations in compliance with this or any 
other regulation; 
(j) letters of support from named partners where applicable, demonstrating their 
agreement with the proposed decommissioning and abandonment approach; 
(k) estimate of the cost of the proposed measures, which shall include details of the 
category of expenditures (based on best estimate, global benchmark with similar 
project and the indication of any potential deviations in the estimate that may 
account for any difference in the final outcome at implementation); 
(l) schedule, indicating details of the decommissioning and abandonment time scale 
for the proposed option, including a schedule showing the dates at which the 
various stages of the decommissioning and abandonment are expected to start 
and finish; 
(m) details of the arrangements by which the licensee will keep the Authority informed 
of the progress of decommissioning and abandonment; and 
(n) a description of the post-decommissioning and abandonment monitoring and 
maintenance phase, including steps to be taken to ensure maintenance and 
safety, where any installation, structure or pipeline remained disused and in 
position or are to be partly removed.