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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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c. Care shall be taken to ensure that at no time should the maximum steady state 
operating pressure and static condition exceed either the internal design 
pressure or the pressure ratings of components used whichever is less.  
d. Pressure surges or any momentary pressure variations shall not exceed 10 
percent of the operating pressure limits. 
e. Pressure Relief Devices shall be inspected and re-certified once in every twenty-
four (24) months in the presence of DPR representatives and with the report of 
such tests lodged with the nearest office of the Department. 
f. All Pressure Relief Devices shall be activated after installation/maintenance to 
ensure that they function properly.  
6.3.2 Pipeline Route 
The Pipeline route shall be operated and maintained in compliance with the Oil Pipeline 
Act and in line with Internationally recognised standards. Additionally, the following shall 
be carried out at the minimum: 
i. 
Pipeline markers at crossings shall indicate the location of the line and the name 
of the operating company. 
ii. 
The right of way shall be maintained so as to have a clear visibility and give 
reasonable access to maintenance crews.  
iii. 
Clear access shall be maintained to valve locations and ditches shall be protected 
against washout of the line. 
iv. 
The right of way shall be regularly patrolled/monitored for prompt detection of 
any line break, encroachment or any other development that may endanger the 
safety of personnel, environment, and pipeline. Where there is such 
development, the Operator shall promptly take necessary actions to prevent 
escalation of hazard and report the development to the DPR within 24 hours.  
v. 
 All under water crossing shall be periodically inspected but not longer than once 
in two years to ensure that there is sufficient cover for the pipeline and that the 
safety of the line at crossings is not endangered in any way. 
6.3.3 Offshore Pipelines 
Offshore Pipelines shall be operated in line with internationally recognised standards. The 
operator shall ensure that for offshore pipelines connected to platform risers, the riser