Library / Page | 1 MIDSTREAM AND DOWNSTREAM PETROLEUM OPERATIONS REGULATIONS, 2024
Page | 1 MIDSTREAM AND DOWNSTREAM PETROLEUM OPERATIONS REGULATIONS, 2024

Page 27 of 101
 
 
Page | 27 
 
(a) be 
accredited 
in 
accordance 
with 
nationally 
and 
internationally recognised standards; and  
(b) have a documented uncertainty equal to or better than those 
set out in these Regulations.  
(5) A licensee or permit holder shall ensure that a laboratory analysis of  
the composition or quality of natural gas or its derivatives or  petroleum 
liquids, crude oil or its derivatives, condensate, petroleum liquids, 
petroleum products or any other form of petroleum liquids for custody 
transfer and allocation purposes is carried out by an accredited 
measurement laboratory and witnessed by the Authority. 
36. (1) The reference conditions for temperature and pressure to 
determine standard volume is 60 oF and 14.696 psia (101.325 kPa) for 
crude oil and condensate. 
(2) A reference pressure other than 101.325 kPa may be used for natural 
gas liquid and liquefied petroleum gas. 
(3) A reference temperature and pressure of 15oC and 101.325 kPa may 
be used for petroleum products and liquified natural gas. 
 
Reference 
conditions  
37. The by-pass of a meter bank, dispensing pump, loading gantry, or 
provision for reverse flow through the meter bank of any measurement 
system is prohibited.  
By-pass of 
measurement 
system  
38. (1) The primary measurement method for determining the quantities of 
petroleum liquids or natural gas or its derivatives shall be by dynamic 
measurement method. 
(2) Notwithstanding sub-regulation (1) of this regulation, where dynamic 
measurement method is not applicable, static measurement method 
shall apply subject to conditions prescribed by the Authority.  
Measurement 
methods 
39. (1) A metering system for measuring petroleum liquids or natural gas or 
its derivatives shall not be designed without the approval of the Authority. 
(2) A meter bank shall be designed to N+1 philosophy and make provisions 
for the proving system.  
(3) An application for approval under sub regulation (1) of this regulation 
shall be accompanied with – 
(a) the type of meter selected and selection criteria; 
(b) design philosophy; 
Metering 
System Design