EN 16321-1:2013

SLOVENSKI STANDARD
01-december-2013
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Petrol vapour recovery during refuelling of motor vehicles at service stations - Part 1:
Test methods for the type approval efficiency assessment of petrol vapour recovery
systems
Benzindampf-Rückrückführung während der Betankung von Kraftfahrzeugen an
Tankstellen - Teil 1: Prüfverfahren für die Typzulassung der Effizienzbewertung von
Gasrückführsystemen
Récupération des vapeurs d'essence lors du ravitaillement en carburant des véhicules à
moteur dans les stations-service - Partie 1: Méthodes d'essai pour l'homologation et
l'évaluation de l'efficacité des systèmes de récupération des vapeurs
Ta slovenski standard je istoveten z: EN 16321-1:2013
ICS:
75.200 2SUHPD]DVNODGLãþHQMH Petroleum products and
QDIWHQDIWQLKSURL]YRGRYLQ natural gas handling
]HPHOMVNHJDSOLQD equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 16321-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2013
ICS 75.200
English Version
Petrol vapour recovery during refuelling of motor vehicles at
service stations - Part 1: Test methods for the type approval
efficiency assessment of petrol vapour recovery systems
Récupération des vapeurs d'essence lors du ravitaillement Benzindampf-Rückführung während der Betankung von
en carburant des véhicules à moteur dans les stations- Kraftfahrzeugen an Tankstellen - Teil 1: Prüfverfahren für
service - Partie 1: Méthodes d'essai pour l'homologation et die Typzulassung der Effinzienzbewertung von
l'évaluation de l'efficacité des systèmes de récupération Gasrückführungssystemen
des vapeurs
This European Standard was approved by CEN on 26 July 2013.

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
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16321-1:2013: E
worldwide for CEN national Members.

Contents Page
Foreword .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Requirements .8
4.1 General .8
4.2 Efficiency .8
4.3 Petrol vapour /petrol ratio .8
4.4 Proportionality .9
4.5 Correction factor . 10
4.6 Vapour processing unit . 10
5 Measurement and test methods for the assessment of petrol vapour recovery systems at
service stations . 11
5.1 General test conditions . 11
5.2 Efficiency test . 11
5.2.1 General . 11
5.2.2 Test tanks . 12
5.2.3 Test procedure . 13
5.2.4 Test refuelling . 14
5.2.5 Adsorber . 14
5.2.6 Calculation of the efficiency . 14
5.3 Petrol vapour/petrol ratio . 14
5.3.1 General . 14
5.3.2 Test procedure . 15
5.4 Proportionality test . 16
5.4.1 General . 16
5.4.2 Test procedure . 16
5.5 Correction factor determination . 17
5.5.1 General . 17
5.5.2 Test with petrol vapour . 17
5.5.3 Test with air . 17
5.6 Retesting criteria for modifications . 19
6 Automatic monitoring systems . 19
7 Environmental aspects . 19
8 Certificate for vapour recovery systems . 19
9 Marking . 19
Annex A (normative) List of representative tanks . 20
Annex B (normative) Retesting criteria for modifications . 21
Annex C (normative) Certificate format . 22
Annex D (normative) Monitoring system . 23
D.1 General . 23
D.2 Requirements . 23
D.3 Measurement and test methods . 24
D.3.1 Test for pressure loss . 24
D.3.2 Test for detection of a vapour recovery efficiency error . 24
D.3.3 Test for an alarm when the monitor detects an error during a self-test . 24
D.3.4 Test for de-activation of a delivery point . 25
D.4 Example monitoring system certificate . 25
Annex E (informative) Identification of petrol vapour recovery systems . 26
Annex F (informative) Environmental aspects . 27
Bibliography . 28

Foreword
This document (EN 16321-1:2013) has been prepared by Technical Committee CEN/TC 393 “Equipment for
storage tanks and for filling stations”, the secretariat of which is held by DIN.
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 March 2014, and conflicting national standards shall be withdrawn at
the latest by March 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.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
EN 16321, Petrol vapour recovery during refuelling of motor vehicles at service stations, is divided into the
following parts:
— Part 1:Test methods for the type approval efficiency assessment of petrol vapour recovery systems;
— Part 2: Test methods for verification of vapour recovery systems at service stations.
WARNING — Persons using this European Standard should be familiar with normal laboratory
practice. This standard does not purport to address all of the safety problems, if any, associated with
its use. It is the responsibility of the user to establish appropriate safety and health practices and to
ensure compliance with any national regulatory conditions.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
1 Scope
This European Standard specifies the measurement and test methods for the efficiency assessment of petrol
vapour recovery systems for service stations (Stage II).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 228:2012, Automotive fuels — Unleaded petrol — Requirements and test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
back pressure
differential pressure relative to atmosphere caused by the flow resistance of the petrol vapour recovery return
line from the system to the petrol vapour receiving area
3.2
maximum back pressure
differential pressure relative to atmosphere at the outlet of the vapour pump up to which the system operates
properly
3.3
basic emission
hydrocarbons (petrol vapour) that are emitted into the environment during refuelling of test tanks without an
operating petrol vapour recovery system
3.4
gas volume meter
device for continuous measurement of air or vapour volume
Note 1 to entry: Bellows type gas vol
...