Library / Midstream and Downstream Petroleum Operations Regulations 2025
Midstream and Downstream Petroleum Operations Regulations 2025

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     (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 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.
34.—(1)  The frequency of calibration of measurement systems shall be
as prescribed 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 —
(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 for
custody transfer and allocation purposes is carried out by an accredited
measurement laboratory and witnessed by the Authority.
35.—(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 liquefied natural gas.
36.  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.
Calibration
and
traceability
Reference
conditions
By-pass of
measurement
system