EN ISO 15112:2014
(Main)Natural gas - Energy determination (ISO 15112:2011)
Natural gas - Energy determination (ISO 15112:2011)
ISO 15112:2011 provides the means for energy determination of natural gas by measurement or by calculation, and describes the related techniques and measures that are necessary to take. The calculation of thermal energy is based on the separate measurement of the quantity, either by mass or by volume, of gas transferred and its measured or calculated calorific value. The general means of calculating uncertainties are also given.
Only systems currently in use are described.
ISO 15112:2011 applies to any gas-measuring station from domestic to very large high-pressure transmission.
New techniques are not excluded, provided their proven performance is equivalent to, or better than, that of those techniques referred to in ISO 15112:2011.
Gas-measuring systems are not the subject of ISO 15112:2011.
Erdgas - Bestimmung von Energiemengen (ISO 15112:2011)
Diese Internationale Norm sieht Maßnahmen vor zur Ermittlung von Energiemengen von Erdgas durch Messung oder Berechnung und beschreibt die dabei erforderlichen anzuwendenden Techniken und Maßnahmen. Die Berechnung von thermischer Energie beruht auf der gesonderten Messung der Gasmenge, entweder als Masse oder Volumen des (an Schnittstellen) übertragenen Gases und auf seinem gemessenen oder berechneten Brennwert. Allgemeine Maßnahmen zur Berechnung von Unsicherheiten sind ebenfalls angegeben.
Ausschließlich derzeit verwendete Systeme werden beschrieben.
ANMERKUNG Der Einsatz derartiger Systeme in kommerziellem oder offiziellem Handel erfordert möglicherweise die Zulassung durch nationale Zulassungsbehörden; und die Übereinstimmung mit gesetzlichen Vorschriften ist erforderlich
Diese Internationale Norm gilt für alle Gasmessanlagen von Endkunden im privaten Bereich bis hin zu sehr großen Hochdrucktransportanlagen.
Neue Verfahren sind nicht ausgeschlossen, sofern ihre nachgewiesene Leistungsfähigkeit vergleichbar oder besser als jene Techniken ist, auf die in dieser Internationalen Norm Bezug genommen wird.
Gasmesssysteme sind nicht Gegenstand dieser Internationalen Norm.
Gaz naturel - Détermination de l'énergie (ISO 15112:2011)
L'ISO 15112:2011 fournit les moyens permettant de déterminer l'énergie du gaz naturel par mesurage ou par calcul, et décrit les techniques associées et les mesures nécessaires à prendre. Le calcul de l'énergie thermique est fondé sur le mesurage séparé de la quantité de gaz transféré, exprimée en masse ou en volume, et sur son pouvoir calorifique mesuré ou calculé. Elle fournit également les moyens généraux permettant le calcul des incertitudes.
Elle ne décrit que les systèmes couramment utilisés.
L'ISO 15112:2011 s'applique à tout poste de comptage de gaz, de la distribution intérieure au transport à de très haute pression.
Le recours à de nouvelles techniques est admis sous réserve de performances éprouvées équivalentes ou supérieures aux techniques citées en référence dans l'ISO 15112:2011.
Les systèmes de comptage de gaz ne sont pas abordés dans l'ISO 15112:2011.
Zemeljski plin - Določevanje energijske vrednosti (ISO 15112:2011)
Standard EN-ISO 15112 zagotavlja sredstva za določevanje energijske vrednosti zemeljskega plina z merjenjem ali izračunom ter opisuje s tem povezane tehnike in ukrepe, ki jih je potrebno sprejeti. Izračun toplotne energije temelji na ločenem merjenju količine (masa ali prostornina) prenesenega plina in njegove izmerjene ali izračunane kalorične vrednosti. Podana so tudi splošna sredstva za izračun negotovosti. Opisani so samo sistemi, ki se trenutno uporabljajo. Ta mednarodni standard se uporablja za vse merilne postaje za plin od gospodinjskih do velikih postaj z visokotlačnih prenosom. Nove tehnike niso izključene, če je dokazano, da delujejo enako dobro ali bolje kot tiste, opisane v tem mednarodnem standardu. Sistemi za merjenje plinov niso predmet tega mednarodnega standarda.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2014
=HPHOMVNLSOLQ'RORþHYDQMHHQHUJLMVNHYUHGQRVWL ,62
Natural gas - Energy determination (ISO 15112:2011)
Erdgas - Bestimmung von Energiemengen (ISO 15112:2011)
Gaz naturel - Détermination de l'énergie (ISO 15112:2011)
Ta slovenski standard je istoveten z: EN ISO 15112:2014
ICS:
75.060 Zemeljski plin Natural gas
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 15112
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2014
ICS 75.060
English Version
Natural gas - Energy determination (ISO 15112:2011)
Gaz naturel - Détermination de l'énergie (ISO 15112:2011) Erdgas - Bestimmung von Energiemengen (ISO
15112:2011)
This European Standard was approved by CEN on 16 February 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15112:2014 E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
The text of ISO 15112:2011 has been prepared by Technical Committee ISO/TC 193 “Natural gas” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 15112:2014.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by September 2014, and conflicting national standards shall be
withdrawn at the latest by September 2014.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 15112:2011 has been approved by CEN as EN ISO 15112:2014 without any modification.
INTERNATIONAL ISO
STANDARD 15112
Second edition
2011-07-15
Natural gas — Energy determination
Gaz naturel — Détermination de l'énergie
Reference number
ISO 15112:2011(E)
©
ISO 2011
ISO 15112:2011(E)
© ISO 2011
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.
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Published in Switzerland
ii © ISO 2011 – All rights reserved
ISO 15112:2011(E)
Contents Page
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and units . 6
5 General principles . 6
6 Gas measurement . 8
6.1 General . 8
6.2 Volume measurement . 9
6.3 Calorific value measurement . 9
6.4 Volume conversion . 10
6.5 Calibration . 11
6.6 Data storage and transmission . 11
7 Energy determination . 12
7.1 Interfaces . 12
7.2 Methods of energy determination . 14
8 Strategy and procedures . 16
8.1 General . 16
8.2 Strategies for energy determination . 18
8.3 Plausibility checks . 22
9 Assignment methods . 23
9.1 Fixed assignment . 23
9.2 Variable assignment . 25
9.3 Determination of the representative calorific value . 27
10 Calculation of energy quantities . 28
10.1 General equations for energy . 28
10.2 Calculation of averaged values — Calculation from average calorific values and
cumulative volumes . 30
10.3 Volume and volume-to-mass conversions . 30
10.4 Energy determination on the basis of declared calorific values . 30
11 Accuracy on calculated energy . 31
11.1 Accuracy . 31
11.2 Calculation of uncertainty . 31
11.3 Bias . 32
12 Quality control and quality assurance . 33
12.1 General . 33
12.2 Check of the course of the measuring data. 34
12.3 Traceability . 34
12.4 Substitute values . 34
Annex A (informative) Main instruments and energy-determination techniques . 36
Annex B (informative) Different possible patterns in the change of the calorific value . 41
Annex C (informative) Volume conversion and volume-to-mass conversion . 44
Annex D (informative) Incremental energy determination . 45
ISO 15112:2011(E)
Annex E (informative) Practical examples for volume conversion and energy quantity calculation .47
Annex F (informative) Practical examples for averaging the calorific value due to different
delivery situations .51
Annex G (informative) Ways of determining substitute values .56
Annex H (informative) Plausibility check graphical example .58
Annex I (informative) Uncorrected data, bias correction and final result graphical example .59
Annex J (informative) Single-reservoir calorific value determination .61
Bibliography .62
iv © ISO 2011 – All rights reserved
ISO 15112:2011(E)
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 2.
The main task of technical committees is to prepare International Standards. 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 document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 15112 was prepared by Technical Committee ISO/TC 193, Natural gas.
This second edition cancels and replaces the first edition (ISO 15112:2007), which has been technically
revised.
ISO 15112:2011(E)
Introduction
Since the early 1800s, it has been general practice for manufactured gas and, subsequently, natural gas to be
bought and sold on a volumetric basis. Much time and effort has therefore been devoted to devel
...
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