ISO 4269:2001
(Main)Petroleum and liquid petroleum products — Tank calibration by liquid measurement — Incremental method using volumetric meters
Petroleum and liquid petroleum products — Tank calibration by liquid measurement — Incremental method using volumetric meters
This International Standard specifies a method for the calibration of tanks by addition of batches of liquid. The liquid is used as a volume-transfer medium, measured accurately by means of a meter. This International Standard is not applicable to the calibration of reference measuring instruments, proving tanks, or meter provers. NOTE Applicable standards are given in the bibliography.
Pétrole et produits pétroliers liquides — Jaugeage des réservoirs par épalement — Méthode par empotement utilisant des compteurs volumétriques
La présente Norme internationale prescrit des méthodes de jaugeage des réservoirs par ajout de quantités connues de liquide. Le liquide est utilisé comme intermédiaire pour le transfert de volume, et mesuré avec exactitude au moyen d'un compteur. La présente Norme internationale ne s'applique pas à l'étalonnage des instruments de mesure de référence, des jauges étalons et des tubes étalons. NOTE Les normes applicables sont données dans la bibliographie.
Nafta in tekoči naftni proizvodi – Umerjanje rezervoarjev s tekočim merjenjem – Postopna metoda z uporabo volumetrov
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2006
1DIWDLQWHNRþLQDIWQLSURL]YRGL±8PHUMDQMHUH]HUYRDUMHYVWHNRþLPPHUMHQMHP±
3RVWRSQDPHWRGD]XSRUDERYROXPHWURY
Petroleum and liquid petroleum products -- Tank calibration by liquid measurement --
Incremental method using volumetric meters
Pétrole et produits pétroliers liquides -- Jaugeage des réservoirs par épalement --
Méthode par empotement utilisant des compteurs volumétriques
Ta slovenski standard je istoveten z: ISO 4269:2001
ICS:
75.180.30 Oprema za merjenje Volumetric equipment and
prostornine in merjenje measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ISO
STANDARD 4269
First edition
2001-03-15
Petroleum and liquid petroleum products —
Tank calibration by liquid measurement —
Incremental method using volumetric
meters
Pétrole et produits pétroliers liquides — Jaugeage des réservoirs par
épalement — Méthode par empotement utilisant des compteurs
volumétriques
Reference number
©
ISO 2001
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not
be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this
file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this
area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters
were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event
that a problem relating to it is found, please inform the Central Secretariat at the address given below.
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body
in the country of the requester.
ISO copyright office
Case postale 56 � CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.ch
Web www.iso.ch
Printed in Switzerland
ii © ISO 2001 – All rights reserved
Contents Page
Foreword.iv
Introduction.v
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Precautions .2
5 Meters .2
6 Apparatus .4
7 Calibration procedure .5
8 Corrections to observed volumes.8
9 Calculation of tank capacity tables.9
10 Requirements for calculations .10
Annex A (normative) Correction for thermal effects .12
Annex B (informative) Field data and calculation sheets.18
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 4269 was prepared by Technical Committee ISO/TC 28, Petroleum products and
lubricants, Subcommittee SC 3, Static petroleum measurement.
Annex A forms a normative part of this International Standard. Annex B is for information only.
iv © ISO 2001 – All rights reserved
Introduction
This International Standard forms part of a series on tank calibration including the following:
ISO 7507-1, ISO 7507-2, ISO 7507-3, ISO 7507-4, ISO 7507-5, ISO 7507-6, ISO 8311, ISO 9091-1 and
ISO 9091-2.
Liquid calibration methods may be used in the calibration of either the total or partial capacity of a tank. A high degree
of accuracy may be obtained provided that great care is taken at all stages of the operation. The method is particularly
useful where tanks are of irregular shape, for the calibration of the bottom of any storage tank, or for the calibration of
ship and barge tanks having irregular cross sections.
The method offers a degree of accuracy which may exceed other methods when used in the calibration of small tanks,
especially small horizontal cylindrical tanks.
The calibration liquid may be either water or a suitable petroleum product having a low volatility and viscosity. Water is
recommended where wide temperature variations are expected during calibration as water has a low coefficient of
cubical expansion. However, the use of water may introduce unacceptable risks and difficulties depending on the use
to which the tank being calibrated is to be put (e.g. the use and subsequent removal of water when used in the
calibration of underground storage tanks at retail sites). In such circumstances the use of a suitable petroleum product
would be preferable.
INTERNATIONAL STANDARD ISO 4269:2001(E)
Petroleum and liquid petroleum products — Tank calibration by
liquid measurement — Incremental method using volumetric
meters
1 Scope
This International Standard specifies a method for the calibration of tanks by addition of batches of liquid. The liquid is
used as a volume-transfer medium, measured accurately by means of a meter.
This International Standard is not applicable to the calibration of reference measuring instruments, proving tanks, or
meter provers.
NOTE Applicable standards are given in the bibliography.
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 references temperature of 15 °C and
60 °F.
ISO 91-2:1991, Petroleum measurement tables — Part 2: Tables based on a reference temperature of 20 °C.
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 4268, Petroleum and liquid petroleum products —Temperature measurements — Manual methods.
ISO 7507-1:1993, Petroleum and liquid petroleum products — Calibration of vertical cylindrical tanks — Part 1:
Strapping method.
ISO/TR 7507-6:1997, Petroleum and liquid petroleum products — Calibration of vertical cylindrical tanks — Part 6:
Recommendations for monitoring, checking and verification of tank calibration and capacity tables.
ISO 9770:1989, Crude petroleum and petroleum products — Compressibility factors for hydrocarbons in the range
3 3
638 kg/m to 1074 kg/m .
IEC 60079-10, Electrical apparatus for explosive gas atmospheres — Part 10: Classification of hazardous areas.
3 Terms and definitions
For the purposes of this International Standard, the terms and definitions given in ISO 7507-1, and the following, apply.
3.1
K-factor
number of pulses generated by a meter per unit of volume passing through it
3.2
pre-set device
equipment which shuts off the delivery of calibration liquid to the meter after a predetermined volume has passed
through the meter
4 Precautions
4.1 The general precautions and safety precautions in ISO 7507-1 and IEC 60079-10 shall apply to this
International Standard.
4.2 When a petroleum product is used as the calibration liquid, the following additional safety precautions, which
are not exhaustive, shall be observed:
a) control of sources of ignition;
b) prevention of electrostatic accumulation by
1) the correct bonding of transfer hoses,
2) control of pumping speeds,
3) prevention of free fall and splashing of liquid,
–
4) maintenance of the velocity of the liquid in the line below 1 ms until the end of the filling pipe is submerged.
5 Meters
5.1 General specifications
5.1.1 The meter shall be of the positive displacement or turbine type.
5.1.2 The meter shall be fabricated from materials suitable for the calibration liquid to be used.
5.1.3 The meter shall be selected so that the flow rate, at which the meter will operate during the tank calibration,
is within the linear range of the meter factor curve of the meter.
The meter should either be fitted with a flow-rate indicator, or average flow rates should be calculated by timing
deliveries by means of a stop watch.
5.1.4 The meter shall have either a device giving a read-out in volumetric units or an electronic pulse counter
used to calculate volume.
To enable the required repeatability to be determined during the proving of the meter, and depending on the
volume passed by the meter during such proving, a special counter or other indicator capable of being read to a
fraction of the unit of volume should be provided.
2 © ISO 2001 – All rights reserved
5.1.5 A volumetric proving tank, a pipe prover or a small volume prover, suitable for use with the type of meter
chosen, shall be provided for calibrating the meter. The selected apparatus shall be provided with a calibration
certificate showing any corrections which may be required when in use.
5.1.6 A thermowell (thermometer pocket) shall be provided in the metering system adjacent to the meter.
To ensure adequate immersion and thermal response, and to avoid undesirable thermal conduction effects from
the pipe wall, it is recommended that, particularly in the case of small diameter lines, the pocket should be installed
in the body of the meter if a positive displacement meter is used. If a turbine meter is used, then the thermowell
shall be installed in the pipework at least five pipe diameters downstream of the meter position. The thermowell
should be in direct contact with the calibration liquid and should be filled with a light oil to aid thermal response. The
thermowell, and the fitting in which the sensitive element of the thermometer is immersed, should be designed in
accordance with sound thermo-technical principles. It may be desirable to provide external insulation round the
pipe or fitting at the position of, and adjacent to, the thermowell.
5.1.7 A rapid operating valve or shut off device shall be installed downstream of the meter (see 6.4.5).
5.2 Positive displacement meters
The meter factor shall not deviate by more than � 0,20 % from the average meter factor between 10 % and 100 % of
the maximum rated flow rate of the meter.
5.3 Turbine meters
5.3.1 The K-factor shall not deviate by more than � 0,20 % between 10 % and 100 % of the maximum capacity
of the meter.
5.3.2 A back pressure in excess of 100 kPa (gauge) shall be applied in order to prevent cavitation.
5.4 Selection of meter
5.4.1 The selection of a meter for tank calibration is contingent on the following:
a) the operating rate of flow to be used when calibrating the tank (see 5.4.4);
b) the maximum pressure to which the meter will b
...
SLOVENSKI STANDARD
01-februar-2006
Nafta in tekoči naftni proizvodi – Umerjanje rezervoarjev s tekočim merjenjem –
Postopna metoda z uporabo volumetrov
Petroleum and liquid petroleum products -- Tank calibration by liquid measurement --
Incremental method using volumetric meters
Pétrole et produits pétroliers liquides -- Jaugeage des réservoirs par épalement --
Méthode par empotement utilisant des compteurs volumétriques
Ta slovenski standard je istoveten z: ISO 4269:2001
ICS:
75.180.30 Oprema za merjenje Volumetric equipment and
prostornine in merjenje measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ISO
STANDARD 4269
First edition
2001-03-15
Petroleum and liquid petroleum products —
Tank calibration by liquid measurement —
Incremental method using volumetric
meters
Pétrole et produits pétroliers liquides — Jaugeage des réservoirs par
épalement — Méthode par empotement utilisant des compteurs
volumétriques
Reference number
©
ISO 2001
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not
be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this
file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this
area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters
were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event
that a problem relating to it is found, please inform the Central Secretariat at the address given below.
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body
in the country of the requester.
ISO copyright office
Case postale 56 � CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.ch
Web www.iso.ch
Printed in Switzerland
ii © ISO 2001 – All rights reserved
Contents Page
Foreword.iv
Introduction.v
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Precautions .2
5 Meters .2
6 Apparatus .4
7 Calibration procedure .5
8 Corrections to observed volumes.8
9 Calculation of tank capacity tables.9
10 Requirements for calculations .10
Annex A (normative) Correction for thermal effects .12
Annex B (informative) Field data and calculation sheets.18
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 4269 was prepared by Technical Committee ISO/TC 28, Petroleum products and
lubricants, Subcommittee SC 3, Static petroleum measurement.
Annex A forms a normative part of this International Standard. Annex B is for information only.
iv © ISO 2001 – All rights reserved
Introduction
This International Standard forms part of a series on tank calibration including the following:
ISO 7507-1, ISO 7507-2, ISO 7507-3, ISO 7507-4, ISO 7507-5, ISO 7507-6, ISO 8311, ISO 9091-1 and
ISO 9091-2.
Liquid calibration methods may be used in the calibration of either the total or partial capacity of a tank. A high degree
of accuracy may be obtained provided that great care is taken at all stages of the operation. The method is particularly
useful where tanks are of irregular shape, for the calibration of the bottom of any storage tank, or for the calibration of
ship and barge tanks having irregular cross sections.
The method offers a degree of accuracy which may exceed other methods when used in the calibration of small tanks,
especially small horizontal cylindrical tanks.
The calibration liquid may be either water or a suitable petroleum product having a low volatility and viscosity. Water is
recommended where wide temperature variations are expected during calibration as water has a low coefficient of
cubical expansion. However, the use of water may introduce unacceptable risks and difficulties depending on the use
to which the tank being calibrated is to be put (e.g. the use and subsequent removal of water when used in the
calibration of underground storage tanks at retail sites). In such circumstances the use of a suitable petroleum product
would be preferable.
INTERNATIONAL STANDARD ISO 4269:2001(E)
Petroleum and liquid petroleum products — Tank calibration by
liquid measurement — Incremental method using volumetric
meters
1 Scope
This International Standard specifies a method for the calibration of tanks by addition of batches of liquid. The liquid is
used as a volume-transfer medium, measured accurately by means of a meter.
This International Standard is not applicable to the calibration of reference measuring instruments, proving tanks, or
meter provers.
NOTE Applicable standards are given in the bibliography.
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 references temperature of 15 °C and
60 °F.
ISO 91-2:1991, Petroleum measurement tables — Part 2: Tables based on a reference temperature of 20 °C.
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 4268, Petroleum and liquid petroleum products —Temperature measurements — Manual methods.
ISO 7507-1:1993, Petroleum and liquid petroleum products — Calibration of vertical cylindrical tanks — Part 1:
Strapping method.
ISO/TR 7507-6:1997, Petroleum and liquid petroleum products — Calibration of vertical cylindrical tanks — Part 6:
Recommendations for monitoring, checking and verification of tank calibration and capacity tables.
ISO 9770:1989, Crude petroleum and petroleum products — Compressibility factors for hydrocarbons in the range
3 3
638 kg/m to 1074 kg/m .
IEC 60079-10, Electrical apparatus for explosive gas atmospheres — Part 10: Classification of hazardous areas.
3 Terms and definitions
For the purposes of this International Standard, the terms and definitions given in ISO 7507-1, and the following, apply.
3.1
K-factor
number of pulses generated by a meter per unit of volume passing through it
3.2
pre-set device
equipment which shuts off the delivery of calibration liquid to the meter after a predetermined volume has passed
through the meter
4 Precautions
4.1 The general precautions and safety precautions in ISO 7507-1 and IEC 60079-10 shall apply to this
International Standard.
4.2 When a petroleum product is used as the calibration liquid, the following additional safety precautions, which
are not exhaustive, shall be observed:
a) control of sources of ignition;
b) prevention of electrostatic accumulation by
1) the correct bonding of transfer hoses,
2) control of pumping speeds,
3) prevention of free fall and splashing of liquid,
–
4) maintenance of the velocity of the liquid in the line below 1 ms until the end of the filling pipe is submerged.
5 Meters
5.1 General specifications
5.1.1 The meter shall be of the positive displacement or turbine type.
5.1.2 The meter shall be fabricated from materials suitable for the calibration liquid to be used.
5.1.3 The meter shall be selected so that the flow rate, at which the meter will operate during the tank calibration,
is within the linear range of the meter factor curve of the meter.
The meter should either be fitted with a flow-rate indicator, or average flow rates should be calculated by timing
deliveries by means of a stop watch.
5.1.4 The meter shall have either a device giving a read-out in volumetric units or an electronic pulse counter
used to calculate volume.
To enable the required repeatability to be determined during the proving of the meter, and depending on the
volume passed by the meter during such proving, a special counter or other indicator capable of being read to a
fraction of the unit of volume should be provided.
2 © ISO 2001 – All rights reserved
5.1.5 A volumetric proving tank, a pipe prover or a small volume prover, suitable for use with the type of meter
chosen, shall be provided for calibrating the meter. The selected apparatus shall be provided with a calibration
certificate showing any corrections which may be required when in use.
5.1.6 A thermowell (thermometer pocket) shall be provided in the metering system adjacent to the meter.
To ensure adequate immersion and thermal response, and to avoid undesirable thermal conduction effects from
the pipe wall, it is recommended that, particularly in the case of small diameter lines, the pocket should be installed
in the body of the meter if a positive displacement meter is used. If a turbine meter is used, then the thermowell
shall be installed in the pipework at least five pipe diameters downstream of the meter position. The thermowell
should be in direct contact with the calibration liquid and should be filled with a light oil to aid thermal response. The
thermowell, and the fitting in which the sensitive element of the thermometer is immersed, should be designed in
accordance with sound thermo-technical principles. It may be desirable to provide external insulation round the
pipe or fitting at the position of, and adjacent to, the thermowell.
5.1.7 A rapid operating valve or shut off device shall be installed downstream of the meter (see 6.4.5).
5.2 Positive displacement meters
The meter factor shall not deviate by more than � 0,20 % from the average meter factor between 10 % and 100 % of
the maximum rated flow rate of the meter.
5.3 Turbine meters
5.3.1 The K-factor shall not deviate by more than � 0,20 % between 10 % and 100 % of the maximum capacity
of the meter.
5.3.2 A back pressure in excess of 100 kPa (gauge) shall be applied in order to prevent cavitation.
5.4 Selection of meter
5.4.1 The selection of a meter for tank calibration is contingent on the following:
a) the operating rate of flow to be used when calibrating the tank (see 5.4.4);
b) the maximum pressure to which the meter will be subjected;
c) th
...
INTERNATIONAL ISO
STANDARD 4269
First edition
2001-03-15
Petroleum and liquid petroleum products —
Tank calibration by liquid measurement —
Incremental method using volumetric
meters
Pétrole et produits pétroliers liquides — Jaugeage des réservoirs par
épalement — Méthode par empotement utilisant des compteurs
volumétriques
Reference number
©
ISO 2001
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not
be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this
file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this
area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters
were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event
that a problem relating to it is found, please inform the Central Secretariat at the address given below.
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body
in the country of the requester.
ISO copyright office
Case postale 56 � CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.ch
Web www.iso.ch
Printed in Switzerland
ii © ISO 2001 – All rights reserved
Contents Page
Foreword.iv
Introduction.v
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Precautions .2
5 Meters .2
6 Apparatus .4
7 Calibration procedure .5
8 Corrections to observed volumes.8
9 Calculation of tank capacity tables.9
10 Requirements for calculations .10
Annex A (normative) Correction for thermal effects .12
Annex B (informative) Field data and calculation sheets.18
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 4269 was prepared by Technical Committee ISO/TC 28, Petroleum products and
lubricants, Subcommittee SC 3, Static petroleum measurement.
Annex A forms a normative part of this International Standard. Annex B is for information only.
iv © ISO 2001 – All rights reserved
Introduction
This International Standard forms part of a series on tank calibration including the following:
ISO 7507-1, ISO 7507-2, ISO 7507-3, ISO 7507-4, ISO 7507-5, ISO 7507-6, ISO 8311, ISO 9091-1 and
ISO 9091-2.
Liquid calibration methods may be used in the calibration of either the total or partial capacity of a tank. A high degree
of accuracy may be obtained provided that great care is taken at all stages of the operation. The method is particularly
useful where tanks are of irregular shape, for the calibration of the bottom of any storage tank, or for the calibration of
ship and barge tanks having irregular cross sections.
The method offers a degree of accuracy which may exceed other methods when used in the calibration of small tanks,
especially small horizontal cylindrical tanks.
The calibration liquid may be either water or a suitable petroleum product having a low volatility and viscosity. Water is
recommended where wide temperature variations are expected during calibration as water has a low coefficient of
cubical expansion. However, the use of water may introduce unacceptable risks and difficulties depending on the use
to which the tank being calibrated is to be put (e.g. the use and subsequent removal of water when used in the
calibration of underground storage tanks at retail sites). In such circumstances the use of a suitable petroleum product
would be preferable.
INTERNATIONAL STANDARD ISO 4269:2001(E)
Petroleum and liquid petroleum products — Tank calibration by
liquid measurement — Incremental method using volumetric
meters
1 Scope
This International Standard specifies a method for the calibration of tanks by addition of batches of liquid. The liquid is
used as a volume-transfer medium, measured accurately by means of a meter.
This International Standard is not applicable to the calibration of reference measuring instruments, proving tanks, or
meter provers.
NOTE Applicable standards are given in the bibliography.
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 references temperature of 15 °C and
60 °F.
ISO 91-2:1991, Petroleum measurement tables — Part 2: Tables based on a reference temperature of 20 °C.
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 4268, Petroleum and liquid petroleum products —Temperature measurements — Manual methods.
ISO 7507-1:1993, Petroleum and liquid petroleum products — Calibration of vertical cylindrical tanks — Part 1:
Strapping method.
ISO/TR 7507-6:1997, Petroleum and liquid petroleum products — Calibration of vertical cylindrical tanks — Part 6:
Recommendations for monitoring, checking and verification of tank calibration and capacity tables.
ISO 9770:1989, Crude petroleum and petroleum products — Compressibility factors for hydrocarbons in the range
3 3
638 kg/m to 1074 kg/m .
IEC 60079-10, Electrical apparatus for explosive gas atmospheres — Part 10: Classification of hazardous areas.
3 Terms and definitions
For the purposes of this International Standard, the terms and definitions given in ISO 7507-1, and the following, apply.
3.1
K-factor
number of pulses generated by a meter per unit of volume passing through it
3.2
pre-set device
equipment which shuts off the delivery of calibration liquid to the meter after a predetermined volume has passed
through the meter
4 Precautions
4.1 The general precautions and safety precautions in ISO 7507-1 and IEC 60079-10 shall apply to this
International Standard.
4.2 When a petroleum product is used as the calibration liquid, the following additional safety precautions, which
are not exhaustive, shall be observed:
a) control of sources of ignition;
b) prevention of electrostatic accumulation by
1) the correct bonding of transfer hoses,
2) control of pumping speeds,
3) prevention of free fall and splashing of liquid,
–
4) maintenance of the velocity of the liquid in the line below 1 ms until the end of the filling pipe is submerged.
5 Meters
5.1 General specifications
5.1.1 The meter shall be of the positive displacement or turbine type.
5.1.2 The meter shall be fabricated from materials suitable for the calibration liquid to be used.
5.1.3 The meter shall be selected so that the flow rate, at which the meter will operate during the tank calibration,
is within the linear range of the meter factor curve of the meter.
The meter should either be fitted with a flow-rate indicator, or average flow rates should be calculated by timing
deliveries by means of a stop watch.
5.1.4 The meter shall have either a device giving a read-out in volumetric units or an electronic pulse counter
used to calculate volume.
To enable the required repeatability to be determined during the proving of the meter, and depending on the
volume passed by the meter during such proving, a special counter or other indicator capable of being read to a
fraction of the unit of volume should be provided.
2 © ISO 2001 – All rights reserved
5.1.5 A volumetric proving tank, a pipe prover or a small volume prover, suitable for use with the type of meter
chosen, shall be provided for calibrating the meter. The selected apparatus shall be provided with a calibration
certificate showing any corrections which may be required when in use.
5.1.6 A thermowell (thermometer pocket) shall be provided in the metering system adjacent to the meter.
To ensure adequate immersion and thermal response, and to avoid undesirable thermal conduction effects from
the pipe wall, it is recommended that, particularly in the case of small diameter lines, the pocket should be installed
in the body of the meter if a positive displacement meter is used. If a turbine meter is used, then the thermowell
shall be installed in the pipework at least five pipe diameters downstream of the meter position. The thermowell
should be in direct contact with the calibration liquid and should be filled with a light oil to aid thermal response. The
thermowell, and the fitting in which the sensitive element of the thermometer is immersed, should be designed in
accordance with sound thermo-technical principles. It may be desirable to provide external insulation round the
pipe or fitting at the position of, and adjacent to, the thermowell.
5.1.7 A rapid operating valve or shut off device shall be installed downstream of the meter (see 6.4.5).
5.2 Positive displacement meters
The meter factor shall not deviate by more than � 0,20 % from the average meter factor between 10 % and 100 % of
the maximum rated flow rate of the meter.
5.3 Turbine meters
5.3.1 The K-factor shall not deviate by more than � 0,20 % between 10 % and 100 % of the maximum capacity
of the meter.
5.3.2 A back pressure in excess of 100 kPa (gauge) shall be applied in order to prevent cavitation.
5.4 Selection of meter
5.4.1 The selection of a meter for tank calibration is contingent on the following:
a) the operating rate of flow to be used when calibrating the tank (see 5.4.4);
b) the maximum pressure to which the meter will be subjected;
c) the liquid which the meter is required to measure (see 5.1.2);
d) the temperature range over which the meter will operate;
e) the range of viscosities over which the meter will operate.
5.4.2 Meters incorporating a temperature compensator shall not be used for tank calibration.
5.4.3 The meter shall be provided with a meter factor or K-factor curve (error–flow curve) for the type of liquid,
viscosity, temperature and range of flow rates over which it will be used.
5.4.4 The repeatability of the meter shall be such that the results of five consecutive proving runs shall be within
arangeof � 0,025 % of the average after correcting for temperature, pressure and viscosity.
5.4.5 Meters shall be installed and operated in accordance with the appropriate recommendations contained in
ISO 2714 or ISO 2715.
6 Apparatus
6.1 Dip-tape and dip-weight
This shall be as specified in ISO 7507-1:1993, B.6 and B.7.
6.2 Ullage paste
NOTE The term "oil-finding paste" is synonymous.
6.3 Water
...
NORME ISO
INTERNATIONALE 4269
Première édition
2001-03-15
Pétrole et produits pétroliers liquides —
Jaugeage des réservoirs par épalement —
Méthode par empotement utilisant des
compteurs volumétriques
Petroleum and liquid petroleum products — Tank calibration by liquid
measurement — Incremental method using volumetric meters
Numéro de référence
©
ISO 2001
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ii © ISO 2001 – Tous droits réservés
Sommaire Page
Avant-propos.iv
Introduction.v
1 Domaine d'application.1
2Références normatives .1
3Termesetdéfinitions.2
4Précautions .2
5 Compteurs.2
6 Appareillage .4
7Procédures de jaugeage .5
8 Correction des volumes relevés .8
9 Calcul des barèmes de jaugeage des réservoirs .10
10 Calculs .10
Annexe A (normative) Corrections pour les effets thermiques .12
Annexe B (informative) Données relevées sur le terrain et tableaux de calculs .18
Bibliographie .26
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux de
normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général confiéeaux
comités techniques de l'ISO. Chaque comité membre intéressé par une étude aledroit de fairepartie ducomité
technique créé à cet effet. Les organisations internationales, gouvernementales et non gouvernementales, en
liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec la Commission
électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI, Partie 3.
Les projets de Normes internationales adoptés par les comités techniques sont soumis aux comités membres pour
vote. Leur publication comme Normes internationales requiert l'approbation de 75 % au moins des comités
membres votants.
L’attention est appelée sur le fait que certains des éléments delaprésente partie de l’ISO 4269 peuvent faire
l’objet de droits de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable de
ne pas avoir identifié de tels droits de propriété et averti de leur existence.
La Norme internationale ISO 4269 a étéélaborée par le comité technique ISO/TC 28, Produits pétroliers et
lubrifiants, sous-comité SC 3, Mesurage statique du pétrole.
L’annexe A constitue un élément normatif de la présente Norme internationale. L'annexe B est donnée uniquement
à titre d'information.
iv © ISO 2001 – Tous droits réservés
Introduction
La présente Norme internationale est une partie d'une série de normes sur le jaugeage des réservoirs qui
comprend:
l'ISO 7507-1, l'ISO 7507-2, l'ISO 7507-3, l'ISO 7507-4, l'ISO 7507-5, l'ISO 7507-6, l'ISO 8311, l'ISO 9091-1 et
l'ISO 9091-2.
Les méthodes de jaugeage par transfert de liquides peuvent être utilisées pour le jaugeage de la capacité totale ou
partielle d’un réservoir. Une grande exactitude peut être obtenue à condition d’effectuer avec soin toutes les étapes
de l’opération. La méthode est particulièrement utile pour les réservoirs de forme irrégulière, pour le jaugeage du
fond de tout bac de stockage, ou pour le jaugeage des citernes de bateaux et de barges dont les formes
géométriques sont irrégulières.
Cette méthode donne un degré d’exactitude, qui peut dépasser celui d’autres méthodes lorsqu’elle est utilisée pour
le jaugeage de petits réservoirs, notamment pour les réservoirs cylindriques horizontaux.
Le liquide de jaugeage peut êtredel’eauoutoutautre liquide pétrolier de faible volatilité et de faible viscosité.En
cas de variations importantes de température au cours du jaugeage, l’utilisation de l’eau est recommandée à cause
de son faible coefficient d’expansion cubique. L'utilisation de l’eau peut par contre entraîner des difficultés et des
risques inacceptables, selon l’affectation du réservoir à jauger; par exemple, l'utilisation et l'élimination de l’eau
pour le jaugeage des réservoirs de stockage enterrés chez les revendeurs. Il est préférable dans de telles
situations d'utiliser un produit pétrolier adapté.
NORME INTERNATIONALE ISO 4269:2001(F)
Pétrole et produits pétroliers liquides — Jaugeage des réservoirs
par épalement — Méthode par empotement utilisant des
compteurs volumétriques
1 Domaine d'application
La présente Norme internationale prescrit des méthodes de jaugeage des réservoirs par ajout de quantités
connues de liquide. Le liquide est utilisé comme intermédiaire pour le transfert de volume, et mesuré avec
exactitude au moyen d’un compteur.
La présente Norme internationale ne s’applique pas à l’étalonnage des instruments de mesure de référence, des
jauges étalons et des tubes étalons.
NOTE Les normes applicables sont données dans la bibliographie.
2Références normatives
Les documents normatifs suivants contiennent des dispositions qui par suite de la référence qui y est faite,
constituent des dispositions valables pour la présente Norme internationale. Pour les références datées, les
amendements ultérieurs ou les révisions de ces publications ne s’appliquent pas. Toutefois, les parties prenantes
aux accords fondés sur la présente Norme internationale sont invitées à rechercher la possibilité d'appliquer les
éditions les plus récentes des documents normatifs indiqués ci-après. Pour les références non datées, la dernière
édition du document normatif en référence s’applique. Les membres de l'ISO et de la CEI possèdent le registre des
Normes internationales en vigueur.
ISO 91-1:1992, Tables de mesure du pétrole — Partie 1: Tables basées sur les températures de référence de
15 °Cet60 °F.
ISO 91-2:1991, Tables de mesurage du pétrole — Partie 2: Tables basées sur la température de référence de
20 °C.
ISO 2714:1980, Hydrocarbures liquides — Mesurage volumétrique au moyen de compteurs à chambre mesureuse
autres que ceux des ensembles de mesurage routiers.
ISO 2715:1981, Hydrocarbures liquides — Mesurage volumétrique au moyen de compteurs à turbine.
ISO 4268, Pétrole et produits pétroliers liquides — Mesurages de la température — Méthodes manuelles.
ISO 7507-1:1993, Pétrole et produits pétroliers liquides — Jaugeage des réservoirs cylindriques verticaux —
Partie 1: Méthode par ceinturage.
ISO/TR 7507-6:1997, Pétrole et produits pétroliers liquides — Jaugeage des réservoirs cylindriques verticaux —
Partie 6: Recommandations relatives à la surveillance, au contrôle et à la vérification du jaugeage des réservoirs et
des tables de jaugeage.
ISO 9770:1989, Pétrole brut et produits pétroliers — Facteurs de compressibilité des hydrocarbures dans la plage
3 3
de 638 kg/m à 1074kg/m .
CEI 60079-10, Matériel électrique pour atmosphères explosives gazeuses — Partie 10: Classement des régions
dangereuses.
3 Termes et définitions
Pour les besoins de la présente Norme internationale, les termes et définitions donnésdansl’ISO 7507-1 ainsi que
lestermesetdéfinitions suivants s'appliquent.
3.1
facteur K
nombre d’impulsions générées par un compteur par unité de volume du produit qui le traverse
3.2
dispositif de prédétermination
équipement qui interrompt le transfert du liquide de jaugeage au travers du compteur aprèsqu’un volume
prédéterminé a traversé ce compteur
4Précautions
4.1 Les précautions générales et relatives à la sécurité définies dans l’ISO 7507-1 et la CEI 60079-10 doivent
être respectées pour la présente Norme internationale.
4.2 Lorsque le liquide de jaugeage est un produit pétrolier, les précautions supplémentaires suivantes doivent
être observées, sans que cette liste soit exhaustive:
a) contrôle des risques potentiels de mise à feu;
b) préventiondel’accumulation électrostatique par:
1) une bonne liaison des tuyaux de raccordement,
2) le contrôle des débits de pompage,
3) le remplissage du réservoir en évitant l’écoulement du liquide en pluie et les éclaboussures,
–1
4) le maintien de la vitesse du liquide dans la tuyauterie à un niveau inférieur à 1ms jusqu’à l’immersion
de l’extrémité du tube de remplissage.
5 Compteurs
5.1 Spécifications générales
5.1.1 Le compteur doit être volumétrique ou à turbine.
5.1.2 Le compteur doit être fabriquéà partir de matériaux adaptés au liquide utilisé pour le jaugeage.
5.1.3 On doit sélectionner le compteur afin que son débit, pendant le jaugeage du réservoir, se situe dans la
partie linéaire de la courbe d’erreur du compteur.
Il convient de munir le compteur d’un dispositif indicateur de débit; dans le cas contraire, les débits moyens sont
calculés par chronométrage des quantitéslivrées.
5.1.4 Le compteur doit être muni d’un indicateur de volume, ou d’un compteur électronique d’impulsions utilisé
pour calculer les volumes.
Afin de pouvoir déterminer la répétabilité pendant l’étalonnage du compteur, et en fonction du volume qui le
traverse au cours de cet étalonnage, il convient d'utiliser un compteur d’impulsions spécial ou tout autre indicateur
permettant la lecture d’unefractiondel’unité de volume.
2 © ISO 2001 – Tous droits réservés
5.1.5 On doit disposer d’une jauge étalon, d’un tube étalon ou d’un dispositif étalon de faible volume, adaptésau
type de compteur utilisé afin d’étalonner le compteur. Les appareils sélectionnés doivent être munis d’un certificat
d’étalonnage donnant les corrections nécessaires à leur utilisation.
5.1.6 On doit disposer d’un puits thermométrique (doigt de gant) adjacent au compteur.
Si le compteur utilisé est du type volumétrique, il est recommandé d’installer le puits thermométrique dans le corps
même du compteur, afin d’obtenir une bonne immersion et une bonne réponse thermique, et éviter les effets
indésirables liés à la conduction thermique de la paroi de la tuyauterie, notamment dans le cas des lignes de faible
diamètre; dans le cas d'utilisation de compteur de turbine, il convient d'installer le doigt de gant dans la canalisation
à une distance au moins égale à cinq fois les diamètres de la tuyauterie en aval du compteur. Il convient que ce
puits soit en contact direct avec le liquide de jaugeage, et soit rempli d’huile légère pour faciliter la réponse
thermique. Il convient que le puits et l’élément dans lequel la partie sensible du thermomètre est immergéesoient
conçus conformément aux principes des techniques de la thermique. Il peut être souhaitable de prévoir une
isolation thermique externe autour de la tuyauterie ou au niveau du puits thermométrique.
5.1.7 On doit installer en aval du compteur une vanne ou un dispositif d’arrêt (voir 6.4.5) à temps de réponse
rapide.
5.2 Compteurs volumétriques
La courbe d’erreur du compteur ne doit pas s’écarter de plus de � 0,20 % du facteur moyen du compteur entre
10%et 100%dudébit maximal du compteur.
5.3 Turbines
5.3.1 Le facteur K ne doit pas s’écarter de � 0,20 % de sa valeur moyenne entre 10 % et 100 % du débit
maximal de la turbine.
5.3.2 On doit exercer une contre-pression supérieure à 100 k
...
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