SIST EN 13617-2:2021

SLOVENSKI STANDARD
01-december-2021
Nadomešča:
SIST EN 13617-2:2012
Bencinski servisi - 2. del: Varnostne zahteve za izdelavo in lastnosti varnostnih
zapor za tlačne in sesalne naprave za točenje goriva
Petrol filling stations - Part 2: Safety requirements for construction and performance of
safe breaks for use on metering pumps and dispensers
Tankstellen - Teil 2: Sicherheitstechnische Anforderungen an Bau- und Arbeitsweise von
Abreißkupplungen für Zapfsäulen und druckversorgte Zapfsäulen
Stations-service - Partie 2 : Exigences de sécurité relatives à la construction et aux
performances des raccords cassants utilisés pour les distributeurs de carburants
Ta slovenski standard je istoveten z: EN 13617-2:2021
ICS:
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13617-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2021
EUROPÄISCHE NORM
ICS 75.200 Supersedes EN 13617-2:2012
English Version
Petrol filling stations - Part 2: Safety requirements for
construction and performance of safe breaks for use on
metering pumps and dispensers
Stations-service - Partie 2 : Exigences de sécurité Tankstellen - Teil 2: Sicherheitstechnische
relatives à la construction et aux performances des Anforderungen an Bau- und Arbeitsweise von
raccords cassants utilisés pour les distributeurs de Abreißkupplungen für Zapfsäulen und druckversorgte
carburants Zapfsäulen
This European Standard was approved by CEN on 14 June 2021.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13617-2:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Explosion protection measures . 7
5 Construction . 7
5.1 General . 7
5.2 Hose breaks . 7
5.3 Inlet threads . 8
5.3.1 Safe break type 1 . 8
5.3.2 Safe break type 2 . 9
6 Physical properties . 9
7 Operational requirements . 10
8 Overview of tests . 11
9 Information for use . 12
9.1 General . 12
9.2 Marking and instruction . 12
10 Environmental aspects . 12
Annex A (normative) General requirements of test . 13
A.1 General . 13
A.2 Tightness test 1 . 13
A.3 Pressure separation test 1 . 13
Annex B (normative) Tests . 14
B.1 Test liquid . 14
B.2 Liquid compatibility pre-conditioning . 14
B.3 Pre-conditioning of re-usable safe breaks by a mechanical impact test . 14
B.4 Tightness test 2 . 15
B.5 Pressure separation test 2 . 15
B.6 Pressure test . 15
B.7 Axial separation force test 1 . 15
B.8 Axial separation force test 2 to nozzle breaks and pump breaks . 16
B.9 Non-axial separation force test 1 to nozzle breaks and pump breaks . 16
B.10 Non-axial separation force test 2 to nozzle breaks and pump breaks . 16
B.11 Axial separation force test 3 . 16
B.12 Axial separation force test 4 . 17
B.13 Liquid release test . 17
B.14 Re-connection test 1 . 17
B.15 Re-connection test 2 . 17
B.16 Electrical resistance test . 18
Annex C (informative) Environmental aspects . 19
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/34/EU aimed to be covered . 21
Bibliography . 23

European foreword
This document (EN 13617-2:2021) 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 2022, and conflicting national standards shall be
withdrawn at the latest by March 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13617-2:2012.
In comparison with the 2012 edition, the following significant changes were made:
— safe breaks for aqueous urea solution added;
— Table 1 corrected to ensure compatibility between components according to EN 13012:2021,
th
— the production acceptance tests are modified to test at least every 500 unit;
— the liquid compatibility preconditioning fluid for fuel safe breaks is defined in EN 13617-1.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive 2014/34/EU.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
EN 13617 consists of four parts:
— Part 1: Safety requirements for construction and performance of metering pumps, dispensers and
remote pumping units;
— Part 2: Safety requirements for construction and performance of safe breaks for use on metering pumps
and dispensers;
— Part 3: Safety requirements for construction and performance of shear valves;
— Part 4: Safety requirements for construction and performance of swivels for use on metering pumps and
dispensers.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
1 Scope
This document specifies safety requirements for the construction and performance of safe breaks to be
fitted to metering pumps and dispensers installed at filling stations and used to dispense liquid fuels and
aqueous urea solution into the tanks of motor vehicles, boats and light aircraft and into portable
−1
.
containers at flow rates up to 200 l · min
This document applies to fuels of subdivision Group IIA according to EN ISO/IEC 80079-20-1 and also
aqueous urea solution according to ISO 22241-1.
The requirements apply to safe breaks at ambient temperatures from −20 °C to +40 °C with the possibility
for an extended temperature range.
This document pays particular attention to electrical, mechanical and hydraulic characteristics of, and
electrical equipment incorporated within or mounted on, the safe break.
This document applies mainly to hazards related to the ignition of liquid fuels being dispensed or their
vapour. This document also addresses electrical and mechanical hazards.
This document does not apply to equipment dispensing compressed or liquefied gases.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1127-1:2019, Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and
methodology
EN 1360:2013, Rubber and plastic hoses and hose assemblies for measured fuel dispensing systems -
Specification
EN 13483:2013, Rubber and plastic hoses and hose assemblies with internal vapour recovery for measured
fuel dispensing systems - Specification
EN 13617-1:2021, Petrol filling stations - Part 1: Safety requirements for construction and performance of
metering pumps, dispensers and remote pumping units
EN IEC 60079-0:2018, Explosive atmospheres - Part 0: Equipment - General requirements
(IEC 60079-0:2017)
EN ISO 228-1:2003, Pipe threads where pressure-tight joints are not made on the threads - Part 1:
Dimensions, tolerances and designation (ISO 228-1:2000)
EN ISO 1825:2017, Rubber hoses and hose assemblies for aircraft ground fuelling and defuelling -
Specification (ISO 1825:2017)
EN ISO 8031:2020, Rubber and plastics hoses and hose assemblies - Determination of electrical resistance
and conductivity (ISO 8031:2020)
EN ISO 80079-36:2016, Explosive atmospheres - Part 36: Non-electrical equipment for explosive
atmospheres - Basic method and requirements (ISO 80079-36:2016)
ISO 261:1998, ISO general purpose metric screw threads — General plan
ISO 965-2:1998, ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for
general purpose external and internal screw threads — Medium quality
ISO 11925-3:1997, Reaction to fire tests — Ignitability of building products subjected to direct impingement
of flame — Part 3: Multi-source test
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 13617-1:2021 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
safe break
device to minimize fuel spillage and to stop fuel flow achieved by separation between nozzle and metering
pump or dispenser within a defined range of forces
3.2
safe break type 1
safe break constructed for liquid lines only
3.3
safe break type 2
safe break constructed for liquid lines combined with vapour recovery lines
3.4
nozzle break
safe break fitted directly into the nozzle inlet, or integral with the nozzle
3.5
hose break
safe break fitted within the delivery hose circuit
3.6
pump break
safe break fitted directly to the fixed hydraulics
3.7
re-usable safe break
safe break that, once operated, can be re-assembled for further use
3.8
non re-usable safe break
safe break that, once operated, cannot be re-assembled for further use
4 Explosion protection measures
4.1 Explosion protection measures shall be taken in accordance with EN 1127-1:2019 and
EN 13617-1:2021, Annex B.
4.2 The safe break shall be explosion protected and shall be Category 2G, Group II, EPL Gb in
accordance with EN ISO 80079-36:2016. The vapour path of a vapour recovery safe break shall be
Category 1G, Group II, EPL Ga in accordance with EN ISO 80079-36:2016. The safe break shall fulfil the
requirements for temperature class T3 and Group IIA according to EN IEC 60079-0:2018 or
EN ISO 80079-36:2016.
5 Construction
5.1 General
5.1.1 All electrical and non-electrical equipment and components, intended for use in potentially
explosive atmospheres, shall be designed and constructed according to good engineering practice and in
conformity with the required categories/EPLs for group II equipment to ensure avoidance of any ignition
source. To classify the category/EPL of the equipment it shall be subjected to an ignition hazard
assessment in accordance with EN ISO 80079-36:2016, 5.2.
5.1.2 All materials used in the construction shall be chemically and dimensionally stable under known
service conditions. Materials likely to come into contact with fuels in both liquid and vapour phases shall
be resistant to attack by these fuels. Compliance shall be demonstrated by manufacturer's declaration
and compliance with the tests B.1 to B.16 inclusive.
5.1.3 Light alloys when used shall conform to the requirements of EN IEC 60079-0:2018, 8.3. If other
specifications for explosion protected equipment impose more stringent requirements then the more
stringent requirement shall apply.
5.1.4 Outside surfaces likely to be handled shall be free of sharp edges.
5.1.5 If protective covers are fitted they shall be constructed such that they allow ventilation and
evaporation of fuel even if some shrinkage occurs. They shall not affect the performance of the safe break.
5.1.6 Safe breaks Type 1 and Type 2, except nozzle breaks, when operated shall close liquid lines both
upstream and downstream of the break.
5.1.7 For safe breaks Type 2 it is not required to close vapour lines. A means to close off vapour lines
may be included.
5.1.8 On re-usable safe breaks, the sections that break away shall be constructed so that the means of
reconnection cannot be damaged by impacts according to test B.3.
5.1.9 The construction shall be such that on reconnection of a re-usable device, or attempted
reconnection of a non re-usable device, fluid shall not be sprayed out during the reconnection action.
5.2 Hose breaks
Hose breaks which incorporate hose shall use hose conforming to EN 1360:2013, EN ISO 1825:2017 or
EN 13483:2013.
5.3 Inlet threads
5.3.1 Safe break type 1
Safe break type 1 threads for the hose connection shall be parallel threads according to
EN ISO 228-1:2003 according to Table 1. The sealing surfaces of the internal and external threads shall
be designed such that they are suitable for use with an appropriate seal.
Table 1 — Safe break type 1 Thread specifications
Nominal inlet size Female threads Male threads
a b
Thread depth Minimum engagement
l l
a b
mm mm
d See Figure 1. See Figure 2.
12,0
3/4” 12,0
−05,
13,0
1” 13,0
−05,
15,0
1 1/4” 15,0
−05,
18,0
1 1/2” 18,0
−05,
a
The thread depth, measured from the outer fore-part to the metallic inner sealing face.
b
The stated minimum length only applies if the female thread of the hose fitting includes an inner flat gasket.

In case of using an outer flat gasket, the male threads may be shorter than the dimensions in this table.
Dimensions in millimetres
Key
l
female thread depth
a
d nominal inlet size
Figure 1 — Female inlet thread
Key
l male thread minimum engagement
b
d nominal inlet size
Figure 2 — Male inlet thread
5.3.2 Safe break type 2
Threads shall be M 34 × 1,5 female or male according to ISO 261:1998 and ISO 965-2:1998, and be in
accordance with EN 13483:2013.
The total thread depth shall be not less than 15,0 mm. The inlet end shall be controlled to a diameter of
(35,0 ± 0,05) mm for a length (6,0 ± 0,1) mm.
6 Physical properties
The physical properties of the safe break shall be according to Table 2.
Table 2 —Physical properties of safe break
Property Requirement Test Method
Electrical resistance of inlet thread to outlet
All readings to be < 10 Ω. B.16
thread when fully assembled
Electrostatic properties EN ISO 80079-36:2016, 6.7 EN ISO 80079-36:2016
Fuel compatibility of fuel safe breaks Clause 7 B.2
Ignitability of composites on safe break, Ignition
The material tested shall not
source C; Effect time 20 s; Surface flame ISO 11925-3:1997
afterflame.
impingement
Characteristics of safe break body and/or cover
Metallic enclosure requirements
to prevent dangerous, mechanically generated, —
of EN IEC 60079-0:2018, 8.3.
sparks (resistance to sparking).
7 Operational requirements
The safe break shall comply with the operational requirements of Table 3 when tested by the indicated
methods; and with a frequency of tests as specified in Clause 8.
Table 3 — Operational requirements
Operational Test
Requirement
Requirement Method
No quantifiable sign of leakage visible to an eye with normal
Tightness test 1 A.2
visual acuity.
Pressure separation There shall be no separation of
...