© 2019 Department of Petroleum Resources. All rights reserved Department of Petroleum Resources (DPR) PROCEDURE GUIDE

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2.0
Definition
This procedure applies to the gauging of stabilized petroleum and petroleum products in a
storage tank and determination of the volume of its contents from the approved calibration
table of the tank.
2.1
Applicable Standards
2.1.1 API MPMS Chapter 3 – Tank Gauging
2.1.2 API MPMS Chapter 7 – Temperature Determination
2.1.3 API MPMS Chapter 8.1/ASTM D 4057 – Manual Sampling of Petroleum and Petroleum
Products
2.1.4 API MPMS Chapter 8.2/ASTM D 4177 – Automatic Sampling of Petroleum and
Petroleum Products
2.1.5 API MPMS Chapter 9/ASTM D 1298 – Density Determination
2.1.6 API MPMS Chapter 10/ASTM D 4006 – Sediment and Water
2.1.7 API MPMS Chapter 14.3 – Orifice metering of natural gas and other related hydrocarbon
fluids
2.1.8 AGA Report No 3 part 2
2.1.9 ISO 5167-2:2003- Measurement of fluid flow by means of pressure differential devices
inserted in circular cross-section conduits running full- part 2: Orifice plates.
2.1.10 AGA Report no 11, API MPMS 14.9 – Measurement of Natural gas by Coriolis meter.
2.1.11 AGA Report 9- Measurement of Natural Gas by Multipath ultrasonic meters.
2.1.12 ISO 10976:2015- Refrigerated light hydrocarbon fluids-measurement of cargoes
onboard LNG carriers.
2.2 Essential Equipment and Facilities for Static Measurement
2.2.1 Steel gauging tapes equipped with innage gauging bobs as specified in API MPMS
Chapter 3 and the ullage method shall be applicable where necessary.
2.2.2 Approved and valid calibration table for each tank.
2.2.3 Manual sampling cans as specified in ASTM D 4057 (API MPMS Chapter 8 – section 1)
2.2.4 Automatic sampling device designed and installed in accordance with ASTM D 4177
(API MPMS Chapter 8 – section 2).
2.2.5 ASTM type thermometers of suitable range with accuracy of ±0.25˚F and graduation of
0.5˚F (API MPMS Chapter 3).
2.2.6 Tanks shall be equipped with a gauge hatch from the roof to the datum plate.
2.2.7 Gauge hatch reference point on the tank roof to be provided with a covered shelter
for adverse weather protection.
2.2.8 Gauge hatch with a well illuminated shelter.