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Applicable to all Oil & Gas Operators GUIDELINES FOR THE DESIGN, CONSTRUCTION, OPERATION AND MAINTENANCE OF OIL AND GAS PIPELINE SYSTEMS IN NIGERIA Code: DPR Guide 0027 – 2021

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Applicable to all Oil & Gas Operators  
GUIDELINES FOR THE DESIGN, CONSTRUCTION, OPERATION AND 
MAINTENANCE OF OIL AND GAS PIPELINE SYSTEMS IN NIGERIA  
Code: DPR Guide 0027 – 2021 
 
Effective Date: 14th October 2021 
 
This is a property of the Department of Petroleum Resources. All rights reserved  
 
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An approved conceptual design/FEED shall form the basis for the development of the 
proposed pipeline system. Where a variation from the approved conceptual design/FEED 
is considered, necessary such deviations shall be communicated to the Department.  
Note: Where line pipes shall be procured as Long Lead Items (LLI), it shall be necessary for 
the licencee to notify the Department of all proposed manufacturing Inspection programs 
at-least six weeks prior to commencement of pipe mill activities and make arrangements 
for the full participation of the DPR representatives. Site witness sheet signed by a 
representative of the Department and other parties be forwarded. 
2.6 Detailed Engineering Design 
All pipeline development shall duly obtain an approval of the detailed engineering design 
prior to commencement of procurement, construction, and installation activities. Detailed 
Engineering include activities required to develop an approved conceptual design into an 
executable level for provision of a pipeline system. Nominated technical officers of the 
Department shall continue to provide regulatory guidance throughout the entire project 
execution. 
Note: For Facility Development Projects with pipelines as part of the SOW, Pipeline 
Approvals and Licences process depicted above shall apply to the pipeline SOW.   
2.6.1 Application for Detailed Engineering  
Application for approval of detailed design shall be forwarded to the Department of 
Petroleum Resources with the following deliverables: 
i. 
Approved for construction PFS with fluid flow calculation notes and / or material 
balances (where available) of pipeline system 
ii. 
Approved for construction P&ID for the pipeline system 
iii. 
Schematic Plan and profile of the pipeline system showing manner of crossings, 
pipeline 
marker 
positions, 
Pipeline 
grade, 
cathodic 
protection, 
line 
sectionalisation valve stations, etc.  
iv. 
An arc GIS spatial grid of the pipeline system with reference to Minna Datum or 
approved geodetic format. 
v. 
A copy of the QA /QC approved for the project execution