ISO 9403:2000 pdf free download,Crude petroleum — Transfer accountability — Guidelines for cargo inspection.
ISO 9403 is intended to encourage uniformity of crude petroleum cargo measurement, accounting and reporting procedures. It is of necessity generalized in recognition of the fact that considerable variation in local conditions exists between seaboard terminals. The guidelines are intended to be implemented worldwide and used in agreements that can be clearly interpreted and executed between parties. The recommendations embodied in this International Standard are not intended to interfere in any way with business contracts, statutory regulations in force at a particular terminal, with safety considerations, or with relevant environmental practices required by any of the parties involved.
The procedures and practices relate to action by producers, buyers, sellers, shore terminal operators, vessel owners and their crews, customs authorities, independent inspectors, and other parties having an interest in crude petroleum measurements. Since the control of the cargo may pass from shore terminal to vessel, vessel to vessel, and vessel to shore terminal, the determination of quantity and quality at these interfaces is important to the crude petroleum supplier, the vessel operator and the cargo receiver.
1 Scope
ISO 9403 establishes procedures and describes the recommended practices for the manual and automatic measurement and accounting of bulk quantities of crude petroleum (including spiked, blended and reconstituted crude petroleum) transferred from one port to another by marine tank vessels.
This International Standard provides a reliable basis for establishing the quantities of crude petroleum transferred.
The procedures apply to the transportation of crude petroleum from loading to discharge.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards.
ISO 91-1:1992, Petroleum measurement tables — Part 1: Tables based on reference temperatures of 15 °C and 60 °F.
ISO 2714:1980, Liquid hydrocarbons — Volumetric measurement by displacement meter systems other than dispensing pumps.
ISO 2715:1981, Liquid hydrocarbons — Volumetric measurement by turbine meter systems.
ISO 3170:1988, Petroleum liquids — Manual sampling.
ISO 3171:1988, Petroleum liquids — Automatic pipeline sampling.
ISO 4267-2:1988, Petroleum and liquid petroleum products — Calculation of oil quantities — Part 2: Dynamic measurement.
ISO 7278-1:1987, Liquid hydrocarbons — Dynamic measurement — Proving systems for volumetric meters — Part 1: General principles.
ISO 7278-2:1988, Liquid hydrocarbons — Dynamic measurement — Proving systems for volumetric meters — Part 2: Pipe provers.
ISO 7278-3:1998, Liquid hydrocarbons— Dynamic measurement— Proving systems for volumetric meters — Part 3: Pulse interpolation techniques.
ISO 7278-4:1999, Liquid hydrocarbons— Dynamic measurement— Proving systems for volumetric meters — Part 4: Guide for operators of pipe provers.
3 Terms and definitions
For the purposes of this International Standard, the following terms and definitions apply.
3.1
bill of lading
B/L
document which states the quantity of crude petroleum delivered to the vessel
3.2
calibration table
table, often referred to as a tank table or tank capacity table, showing the capacity of, or volumes in, a tank corresponding to various liquid levels measured from a reference point
3.3
critical zone
vertical segment close to the bottom of a floating roof tank, where the roof is neither fully floating nor resting on its legs, in which there are complex interactions and buoyancy effects as the floating roof comes to rest on its legs
Note 1 to entry: The zone is usually clearly marked on tank calibration tables, and measurements for custody transfer should not be made within it.
3.4
datum point
point at or near the bottom of a tank from which the reference height is established and from which all measurements for the calibration of a tank are related
cf. reference point
3.5
dip
innage
depth of a liquid in a tank, measured from the surface of the liquid to a fixed datum point
3.6
dissolved water
water contained within the crude petroleum forming a solution at the prevailing temperature
3.7
free water
FW
water that exists as a separate layer from the crude petroleum, and typically lies beneath the crude petroleum
3.8
gross observed volume
GOV
volume of crude petroleum including dissolved water, suspended water and suspended sediment, but excluding free water and bottom sediment, measured at the crude petroleum temperature and pressure prevailing
Note 1 to entry: This may be either the volume in a tank or the difference between the volumes before and after a transfer.
3.9
gross standard volume
GSV
volume of crude petroleum including dissolved water, suspended water and suspended sediment, but excluding free water and bottom sediment, calculated at standard conditions
Note 1 to entry: The standard conditions are in general 15 °C and 101,325 kPa
Note 2 to entry: This may be either the volume in a tank or the difference between the volumes before and after a transfer.
3.10
gross apparent mass-in-air of oil
mass which a GSV of oil has when weighed in air
3.11
in-transit difference
difference between a vessel’s total calculated volume immediately after loading and immediately before discharge
3.12
key person
person who, by virtue of his/her employment, has a direct interest in a transfer of a cargo of crude petroleum
Note 1 to entry: Such persons could include representatives of the terminal, the vessel, the cargo supplier, the cargo receiver, independent inspectors representing those parties, and representatives of fiscal bodies.
3.13
letter of protest
letter issued by any participant in a custody transfer citing any condition with which issue is taken, which serves as a written record that the particular action or findings was questioned at the time of occurrence