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

Page 26 of 101
 
 
Page | 26 
 
C. CLASS C MEASUREMENT 
The metering stations for the delivery of fuel gas within the operator’s 
operating facility or to a third party facility. 
D. CLASS D MEASUREMENT 
The metering station for midstream flare gas measurement. 
E. CLASS E MEASUREMENT 
The weighing or metering station for petroleum based solid products 
measurement.  
 
(2)  
The uncertainty limit data analysis shall be developed for petroleum 
measurement systems within 95% confidence level in accordance with 
recognised standards and the uncertainty limits shall be prescribed by the 
Authority in Guidelines 
(3) The points of deployment for dynamic measurement shall be for - 
(a) custody transfer; 
(b) allocation; 
(c) fuel gas; or 
(d) flare gas. 
(4) Notwithstanding sub-regulation (3) of this regulation, measurement 
methods 
in 
crude 
handling 
agreements, 
crude 
transportation 
agreements, gas sales or supply agreements, gas transportation 
agreements, and other commercial agreements for midstream and 
downstream petroleum operations shall be as approved by the Authority. 
35. (1) The frequency of calibration of measurement systems shall be as 
prescribed in guidelines issued by the Authority. 
(2) A licensee or permit holder shall ensure that measurements and 
calibrations made under these Regulations have traceability to national 
or international measurement standards. 
(3) A licensee or permit holder shall ensure that an instrument used for 
calibration has traceability to national or international measurement 
standards. 
(4) A third-party measurement laboratory used to calibrate equipment 
covered by these Regulations shall -  
Calibration 
and 
traceability