Library / Midstream and Downstream Decommissioning and Abandonment Regulations Under Section 232 and 233 of the Petroleum Industry Act (2021). DRAFT DATE: 10/06/2022

Midstream and Downstream Decommissioning and Abandonment Regulations Under Section 232 and 233 of the Petroleum Industry Act (2021). DRAFT DATE: 10/06/2022

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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 licencee will keep the Authority 
informed of the progress of decommissioning and abandonment. 
 
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. 
 
(3)(i) In respect of the decommissioning and abandonment of any pipelines, storage tanks, 
petroleum products tank farms and jetties, processing or other facilities or infrastructure 
relating to a licence for midstream and downstream petroleum operations offshore, the 
licencee shall make an application to the Authority for approval to decommission and abandon 
at least thirty-six (36) months prior to the proposed start date of the decommissioning and 
abandonment programme. 
 
 
(b)(ii) An application under Regulation 13 (3)(i) of these Regulations shall be accompanied 
by a decommissioning and abandonment programme in a form prescribed by the Authority in 
addition to the requirement in Regulation 11 (a) which shall comprise of – 
 
a. Description of items to be decommissioned and abandoned, inclusive of diagrams, 
covering – 
 
 
(i) 
Support structures for offshore fixed and floating installations at the 
time of removal (type, size, arrangement and weights). 
 
(ii) 
Topsides for offshore fixed and floating installations (type, size, 
configuration, equipment and weights).  
 
(iii) 
Subsea equipment and installations on or in the seabed (size, weight, 
height above seabed, whether piled or not, type of construction and 
material, details of interaction between equipment and other uses of the 
sea, such as fishing).  
 
(iv) 
For pipelines, flow lines and umbilicals – lengths, diameters, type of 
construction, the extent of burial, trenching and details of any concrete 
mattresses, frond mattresses, grout bags, rock-dump or other materials 
used to cover the lines. 
 
(v) 
Details of any subsea facilities that form part of the pipelines, such as 
production line end manifold, umbilical termination assembly, riser 
anchor bases). 
 
(vi) 
Information about the stability of the pipelines including details of any 
spanning or exposure (Met-ocean data, survey data and history to 
support information given in this section should be included as an annex 
to the programme, live pipeline survey information may be relevant). 
 
 
(vii) 
Details of interaction between any part of the pipelines and other uses 
of the sea (such as fishing activity, both historical and depending on the 
field may be necessary to estimate future activity).