Library / Extraordinary Federal Republic of Nigeria Official Gazette No. 33
Extraordinary Federal Republic of Nigeria Official Gazette No. 33

Page 6 of 17
6.—(1) 
The classes of dynamic measurement based on their purpose 
of deployment are specified in the First Schedule to these Regulations. 
(2) The uncertainty limit data analysis shall be dev eloped 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 
the provisions of subregulation (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. 
7.—(1) The frequency of calibration of measurement systems shall be 
as prescribed in a guideline issued by the Authority. 
(2) 
A 
licensee or permit holder shall ensure that rneasurements 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 — 
(a) be accredited in accordance with national and international 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, 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. 
8.—(1) The reference conditions for temperature and pressure to 
determine standard volume is 60 °F 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 
B25 
Cla: 
of 
dynamie 
Measurement. 
Calibration 
and 
traceability. 
Reference 
conditions.