prEN 13616

Overfill prevention devices for static tanks for liquid petroleum fuels

This standard specifies the minimum performance and construction requirements for various types of overfill prevention devices which are limited to static tanks of shop fabricated manufacture both metallic and non metallic. It covers devices for underground tanks and also above ground tanks with a maximum height of 5 m.
To cover the different types of overfill prevention devices, two types have been developed:
   Type A: An overfill prevention device where the operation does not depend on the road tank vehicle or supply system;
   Type B: An overfill prevention device where the operation depends on the road tank vehicle or the supply system.
This standard applies to overfill prevention devices for liquid petroleum fuels, having a flash point up to but not exceeding 100 °C. The requirements apply to overfill prevention devices suitable for use at ambient temperatures in the range from –25 °C to +60 °C, and subject to normal operational pressure variations.
Additional measures may be required for use at temperatures outside this range and are the subject of negotiation between the manufacturer and its client.

Überfüllsicherungen für ortsfeste Tanks für flüssige Brenn- und Kraftstoffe

Diese Norm legt die Mindestleistungsanforderungen an unterschiedliche Bauarten von Überfüllsicherungen fest, deren Einsatz auf metallische oder nichtmetallische ortsfeste werksgefertigte Tanks begrenzt ist. Es werden Einrichtungen für unterirdische Tanks und auch für oberirdische Tanks mit einer Maximalhöhe von 5 m behandelt.
Für die Beschreibung der unterschiedlichen Bauarten von Überfüllsicherungen wurden zwei Typen gebildet:
   Typ A: Überfüllsicherung, deren Funktion nicht von einem Versorgungsfahrzeug oder Versorgungssystem abhängig ist;
   Typ B: Überfüllsicherung, deren Funktion von einem Versorgungsfahrzeug oder Versorgungssystem abhängig ist.
Diese Norm gilt für Überfüllsicherungen in Tanks für Brenn- und Kraftstoffe, die einen Flammpunkt  100 °C haben. Die Anforderungen gelten für Überfüllsicherungen, die bei Umgebungstemperaturen im Bereich von  25 C bis +60 C eingesetzt werden können und nur betriebsbedingten Druckschwankungen ausgesetzt sind.
Zusätzliche Maßnahmen können für den Einsatz bei Temperaturen außerhalb dieses Bereichs verlangt werden und sind Gegenstand von Verhandlungen zwischen dem Hersteller und seinem Kunden.

Dispositifs limiteurs de remplissage pour réservoirs statiques pour carburants pétroliers liquides

La présente Norme spécifie les prescriptions minimales de performance et de construction applicables à
différents types de dispositifs limiteurs de remplissage utilisés uniquement avec des réservoirs statiques
métalliques ou non métalliques fabriqués en usine. Elle concerne également les dispositifs pour réservoirs
enterrés et aériens d'une hauteur maximale de 5 m.
Afin de couvrir les différents types de dispositifs limiteurs de remplissage, deux catégories ont été définies :
- Catégorie A : dispositif limiteur de remplissage dont le fonctionnement ne dépend pas du camion-citerne
ou du système d'alimentation ;
- Catégorie B : dispositif limiteur de remplissage dont le fonctionnement dépend du camion-citerne ou du
système d'alimentation.
La présente Norme s'applique aux dispositifs limiteurs de remplissage pour carburants pétroliers liquides
ayant un point d'éclair inférieur ou égal à 100 °C. Les prescriptions s'appliquent aux dispositifs limiteurs de
remplissage fonctionnant à des températures ambiantes comprises entre –25 °C et +60 °C et soumis à des
variations de la pression normale de fonctionnement.
Des mesures supplémentaires peuvent être requises pour un usage à des températures extérieures à cette
plage et font l'objet de négociations entre le fabricant et son client.

Naprave za preprečitev prepolnitve za stacionarne rezervoarje za tekoča goriva

General Information

• Status: Not Published
• Publication Date: 07-Nov-2011
• ICS: 23.020.10 - Stationary containers and tanks
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• Technical Committee: CEN/TC 393 - Equipment for storage tanks and for service stations
• Drafting Committee: CEN/TC 393/WG 3 - Overfill prevention devices for static tanks for liquid petroleum fuels
• Current Stage: 4097 - End of interruption of work - split/merged
• Start Date: 14-Mar-2011
• Completion Date: 14-Mar-2011
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Directive: 94/9/EC - Directive 94/9/EC of the European Parliament and the Council of 23 March 1994 on the approximation of the laws of the Member States concerning equipment and protective systems intended for use in potentially explosive atmospheres
• Mandate: M/131 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on pipes, tanks and ancillaries, not in contact with water intended for human consumption
• Mandate: M/BC/CEN/92/46 - Standardization mandate assigned to CEN/CENELEC concerning equipment and protective systems intended for use in potentially explosive atmospheres
• Ref Project: oSIST prEN 13616:2010 - Overfill prevention devices for static tanks for liquid petroleum fuels

Relations

• Revises: EN 13616:2004 - Overfill prevention devices for static tanks for liquid petroleum fuels
• Effective Date: 19-Jan-2023

Overview

prEN 13616 (CEN) specifies minimum performance and construction requirements for overfill prevention devices for shop-fabricated static tanks used with liquid petroleum fuels (flash point ≤ 100 °C). The draft standard covers both metallic and non‑metallic tanks, including underground tanks and above‑ground tanks up to 5 m high. Requirements target devices intended for ambient operation from −25 °C to +60 °C (with negotiated measures for other temperatures).

Two device types are defined:

• Type A – device operation independent of the road tank vehicle or supply system (stand‑alone).
• Type B – device operation depends on the road tank vehicle or the supply/signal interface.

Key Topics and Requirements

• Functional and construction criteria: Minimum functional behaviour, mechanical construction, and safety features for reliable overfill prevention.
• Operational classes: Classification and flow‑rate categories, including gravity and pump filling considerations.
• Performance testing: Specified tests include chemical suitability, pressure tests, function tests, environmental and fail‑safe tests, and production quality control.
• Interfaces and system integration (Type B): Requirements for vehicle/tank communication - current, voltage and binary/digital interfaces - and static discharge protection.
• Marking and documentation: Identification, instruction plates, technical leaflets, installation, operation and maintenance instructions.
• Conformity & certification: System of evaluation of conformity, initial type testing and factory production control (FPC).
• Explosion and EMC considerations: Guidance and normative references for explosion‑protected equipment and electromagnetic compatibility.

Applications

• Fuel terminals, service stations and bulk storage sites where static tanks receive deliveries from road tank vehicles.
• Underground and small above‑ground storage tanks serving retail forecourts, commercial sites or mobile refuelling.
• Systems requiring integration between tank overfill protection and vehicle/supply systems (Type B), and stand‑alone mechanical devices (Type A).

Who Uses This Standard

• Manufacturers of overfill prevention devices and tank fittings.
• Fuel storage system designers and integrators.
• Fuel distributors / road tanker operators implementing Type B interfaces.
• Site owners / operators of filling stations, commercial and industrial fuel stores.
• Certification bodies and testing laboratories responsible for type testing and conformity assessment.

Related Standards

Normative references include EN 14116 (product recognition digital interface), EN 60079‑0/11 (explosive atmospheres), EN 60529 (IP code), and EMC standards (EN 61000 series). prEN 13616 supersedes EN 13616:2004 when adopted.

Keywords: prEN 13616, overfill prevention, static tanks, liquid petroleum fuels, Type A, Type B, underground tanks, above‑ground tanks, CEN standard.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2010
1DSUDYH]DSUHSUHþLWHYSUHSROQLWYH]DVWDELOQHUH]HUYRDUMH]DWHNRþDJRULYD
Overfill prevention devices for static tanks for liquid petroleum fuels
Überfüllsicherungen für ortsfeste Tanks für flüssige Brenn- und Kraftstoffe
Dispositifs limiteurs de remplissage pour réservoirs statiques pour carburants pétroliers
liquides
Ta slovenski standard je istoveten z: prEN 13616
ICS:
23.020.10 1HSUHPLþQHSRVRGHLQ Stationary containers and
UH]HUYRDUML tanks
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
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2010
ICS 23.020.10; 75.200 Will supersede EN 13616:2004
English Version
Overfill prevention devices for static tanks for liquid petroleum
fuels
Dispositifs limiteurs de remplissage pour réservoirs Überfüllsicherungen für ortsfeste Tanks für flüssige Brenn-
statiques pour carburants pétroliers liquides und Kraftstoffe
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 393.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13616:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms, definitions and abbreviated terms .6
4 General requirements .7
4.1 Functional criteria .7
4.2 Construction .8
4.3 Avoidance or reduction of ignition sources .8
5 Overfill prevention device Type A .8
5.1 Classification .8
5.2 Flow rate .9
5.2.1 Overfill prevention device by gravity fill only (see annex C.1) .9
5.2.2 Overfill prevention device by gravity or pump fill (see annex C.1) .9
5.3 Pressure surge .9
5.3.1 Overfill prevention device by gravity fill .9
5.3.2 Overfill prevention device by gravity or pump fill .9
5.4 Requirements for A1 and A2 overfill prevention devices .9
5.5 Test method .9
5.5.1 General .9
5.5.2 Chemical suitability test . 10
5.5.3 Pressure tests . 10
5.5.4 Function tests . 10
5.5.5 Test frequency . 12
5.6 Test report . 12
5.7 Marking . 12
5.7.1 Identification . 12
5.7.2 Instruction plate . 13
6 Overfill prevention device Type B . 13
6.1 Specific requirements . 13
6.2 Equipment on the road tank vehicle . 13
6.3 Equipment on the storage tank . 13
6.4 System working characteristics . 13
6.4.1 General . 13
6.4.2 Interface . 14
6.4.3 Voltage interface . 19
6.4.4 Binary/Digital interface . 20
6.5 Static discharge protection . 20
6.6 Classification . 20
6.7 Marking . 21
Annex A (normative) Test methods for overfill prevention device Type B . 22
A.1 General tests . 22
A.1.1 Type tests . 22
A.1.2 Performance tests sensor . 22
A.1.3 Performance tests controller . 22
A.1.4 Fail-safe testing . 23
A.1.5 Manufacturers production tests . 23
A.1.6 Environmental tests . 24
A.2 Test procedure . 24
A.2.1 Current interface . 24
A.2.2 Voltage interface . 25
A.2.3 Binary/Digital interface . 27
Annex B . (normative) Test rigs layouts for overfill prevention device Type A . 28
Annex C (informative) Additional information for overfill prevention devices Types A and B . 29
C.1 Diameter and flow rate . 29
C.2 Technical leaflet for overfill prevention device Type A . 29
C.3 Operational guidelines for overfill prevention device Type B . 29
C.4 Maintenance, installation and operating instructions for overfill prevention device Type B . 29
Annex D (normative) System of evaluation of conformity . 30
D.1 General . 30
D.2 Initial type testing . 30
D.3 Factory production control (FPC) . 30
D.3.1 General . 30
D.3.2 Equipment . 30
D.3.3 Raw materials and components . 31
D.3.4 Non-conforming products . 31
D.3.5 Process control . 31
D.3.6 Continuous surveillance . 31
Annex E (informative) Information on explosion protected equipment . 32
Annex F (informative) Environmental checklist . 34
Annex ZA (informative) Clauses of this European Standard addressing essential requirements or
other provisions of the Equipment and Protective Systems intended for use in potentially
explosive atmospheres Directive . 35
Annex ZB (informative) Clauses of this European Standard addressing essential requirements or
other provisions of the Electromagnetic Compatibility Directive . 37
Annex ZC (informative) Clauses of this European Standard addressing the provisions of the EU
Construction Products Directive . 38
ZC.1 Scope and relevant characteristics . 38
ZC.2 Procedure(s) for attestation of conformity of overfill prevention devices . 39
ZC.2.1 System(s) of attestation of conformity . 39
ZC.2.2 EC Certificate and Declaration of conformity . 40
ZC.3 CE marking and labelling. 41
Bibliography . 42

Foreword
This document (prEN 13616:2010) 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 document is currently submitted to the CEN Enquiry.
This document will supersede EN 13616:2004.
According to EN 13616:2004 the following fundamental changes are given:
— reference to EN 14116
— explosion-technical parameters updated
Introduction
The European Committee for Standardization (CEN) draws attention to the fact that it is claimed that
compliance with this document may involve the use of a patent concerning hose communication methods
given in 6.4.3 and A.2.3.
CEN takes no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has assured the CEN that he is willing to negotiate licences under reasonable
and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the
statement of the holder of this patent right is registered with CEN. Information may be obtained from:
FMC Sening GmbH
Regentstrasse
D-25474 Ellerbek
Germany
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights other than those identified above. CEN shall not be held responsible for identifying any or all such
patent rights.
1 Scope
This standard specifies the minimum performance and construction requirements for various types of overfill
prevention devices which are limited to static tanks of shop fabricated manufacture both metallic and non
metallic. It covers devices for underground tanks and also above ground tanks with a maximum height of 5 m.
To cover the different types of overfill prevention devices, two types have been developed:
 Type A: An overfill prevention device where the operation does not depend on the road tank vehicle or
supply system;
 Type B: An overfill prevention device where the operation depends on the road tank vehicle or the supply
system.
This standard applies to overfill prevention devices for liquid petroleum fuels, having a flash point up to but not
exceeding 100 °C. The requirements apply to overfill prevention devices suitable for use at ambient
temperatures in the range from –25 °C to +60 °C, and subject to normal operational pressure variations.
Additional measures may be required for use at temperatures outside this range and are the subject of
negotiation between the manufacturer and its client.
2 Normative references
The following referenced documents are indispensable for the application 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 590, Automotive fuels — Diesel — Requirements and test methods
EN 14116:2007+A1:2008, Tanks for transport of dangerous goods — Digital interface for the product
recognition device
EN 13463-1:2001, Non-electrical equipment for use in potentially explosive atmospheres — Part 1: Basic
method and requirements
EN 60079-0, Electrical apparatus for explosive gas atmospheres — Part 0: General requirements
(IEC 60079-0:2004, modified)
EN 60079-11, Explosive atmospheres — Part 11: Equipment protection by intrinsic safety "i"
(IEC 60079-11:2008)
EN 60204-1, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC
60204-1:2005)
EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989+A1:1999)
EN 61000-6-1, Electromagnetic compatibility (EMC) — Part 6-1: Generic standards; Immunity for residential,
commercial and light-industrial environments (IEC 61000-6-1:2005)
EN 61000-6-2, Electromagnetic compatibility (EMC) — Part 6-2: Generic standards; Immunity for industrial
environments (IEC 61000-6-2:2005)
EN 61000-6-3, Electromagnetic compatibility (EMC) — Part 6-3: Generic standards; Emission standard for
residential, commercial and light-industrial environments (IEC 61000-6-3:2006)
EN 61000-6-4, Electromagnetic compatibility (EMC) — Part 6-4: Generic standards; Emission standard for
industrial environments (IEC 61000-6-4:2006)
EN ISO 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General principles
for design (ISO 13849-1:2006)
3 Terms, definitions and abbreviated terms
For the purposes of this document the following terms, definitions and abbreviated terms apply.
3.1
overfill prevention device
device forming part of a supply system which automatically prevents the liquid level in the storage tank
exceeding a maximum filling level
3.2
maximum filling level
permitted filling level authorised by the local safety regulations
3.3
supply system
connection hoses, fittings and any fixed pipework through which the liquid is delivered to the storage tank from
the road tank vehicle
3.4
road tank vehicle
any mobile tank carrying liquids intended for discharging into a static storage tank
3.5
level L
level at which the overfill prevention device stops or severely restricts the liquid delivery. This level is set such
that, if emptying of the vehicle delivery hose and of supply pipe occurs, level L is not exceeded
3.6
level L
level at which the overfill prevention device prevents any further product, apart from a permissible leak rate,
entering the storage tank at, or prior to, the maximum filling level
3.7
leak rate
permitted rate of liquid allowed to pass through the overfill prevention device after final closure
3.8
overfill prevention controller
connects to sensors mounted in or on the storage tank and provides a permissive or non permissive output,
hereinafter referred to as a controller
3.9
liquid level detection device
device mounted in a storage tank for detecting liquid at a predetermined level and connected to a controller,
hereinafter referred to as a sensor
3.10
permissive
output state of the overfill prevention controller fitted to the road tank vehicle or supply system which permits
liquid delivery
3.11
non-permissive
output state of the overfill prevention controller fitted to the road tank vehicle or supply system which does not
permit liquid delivery
3.12
shutdown volume
volume of liquid which will flow into the storage tank after the detection of the potential overfill, and before the
complete shutoff
3.13
residual volume
amount of liquid which is in the supply system at the moment of shutdown. This extra volume shall be taken
into account when setting the sensor level to avoid filling above the maximum filling level
3.14
interface
point of transfer of specified information
3.15
vapour tight overfill prevention device
device which does not permit vapour to pass from the ullage space through the device in normal operation
3.16
PID
Product Identification Device
3.17
PRD
Product Recognition Device
4 General requirements
4.1 Functional criteria
4.1.1 On filling the storage tank to a level L , at this level, a complete and automatic closure or automatic
severe restriction of the flow shall be effected.
4.1.2 After initial closure, if provided, the contents of the delivery hose and preferably the delivery pipe shall
be emptied into the storage tank.
4.1.3 Final automatic closure shall occur once level L has been reached (final closure may be achieved at
level L ). At level L , no further liquid other than the allowable leak rate (see 5.4) shall enter the tank.
1 2
4.1.4 The performance of the overfill prevention device shall not be adversely affected by the flow rate
taking into account the following:
a) the liquid level in the storage tank before and during delivery; or
b) the level of liquid in the road tank vehicle or the supply system before and during delivery.
4.1.5 Where the overfill prevention device requires an auxiliary energy source, the filling process shall not
commence or shall automatically stop in the event of failure of that energy source.
4.1.6 The operation of the overfill prevention device shall not generate pressure in excess of the designed
criteria for the supply system.
4.2 Construction
4.2.1 All construction materials shall be compatible with the temperature range of –25 °C to +60 °C and with
the liquid and its vapour phase being stored, the manufacturer shall specify all materials in contact with the
liquid.
4.2.2 When the overfill prevention device forms part of an earth continuity path it shall be conductive.
4.2.3 The overfill prevention device shall be of a durable construction. Durability shall be tested in
accordance with 5.5.4.7 and annex A.
4.2.4 All parts of the overfill prevention device situated either internally or externally on the tank shall
withstand static negative and positive pressure test to comply with 5.5.3. Any resultant deformation shall not
prevent the device fully functioning.
4.2.5 The overfill prevention device shall prevent or severely restrict vapour flowing from the ullage space
into the fill pipe.
4.3 Avoidance or reduction of ignition sources
4.3.1 General requirements
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 to
the required categories for group II equipment to ensure avoidance of any ignition source. To classify the
category of the equipment it shall be subjected to an ignition hazard assessment in accordance with 5.2 of EN
13463-1:2001.
Explosion protection measures shall be taken in accordance with annex E.
4.3.2 Electrical equipment
Any electrical equipment, intended for use in potentially explosive atmospheres, shall comply with the
requirements according to EN 50014 and, where relevant, the European Standard for the specific type of
ignition protection selected, see Table E.1.
4.3.3 Non-electrical equipment
Any non-electrical equipment, intended for use in potentially explosive atmospheres, shall comply with the
requirements of EN 13463-1 and, where relevant, the European Standard for the specific type of ignition
protection selected.
5 Overfill prevention device Type A
5.1 Classification
Two subtypes of devices are defined for Type A:
 Overfill prevention device by gravity fill only: Subtype A1;
 Overfill prevention device by gravity or pump fill: Subtype A2.
5.2 Flow rate
5.2.1 Overfill prevention device by gravity fill only (see annex C.1)
The device shall work at 0,2 m/s minimum linear velocity and 15 kPa static pressure after closure.
The device shall work at 3 m/s maximum linear velocity and 200 kPa static pressure after closure.
5.2.2 Overfill prevention device by gravity or pump fill (see annex C.1)
The device shall work at 0,2 m/s minimum linear velocity and 15 kPa static pressure after closure.
The device shall work at 3 m/s maximum linear velocity and 400 kPa or 800 kPa static pressure after closure.
5.3 Pressure surge
5.3.1 Overfill prevention device by gravity fill
Any pressure surge created by the overfill prevention device at closure exceeding 300 kPa shall not exceed a
period of more than 10 ms.
5.3.2 Overfill prevention device by gravity or pump fill
For pump with a performance of 400 kPa any pressure surge created by the overfill prevention device at
closure exceeding 600 kPa shall not exceed a period of more than 10 ms.
For pump with a performance of 800 kPa any pressure surge created by the overfill prevention device at
closure exceeding 1200 kPa shall not exceed a period of more than 10 ms.
5.4 Requirements for A1 and A2 overfill prevention devices
The device shall not have a leak flow rate greater than 150 l/h after closure at operational pressure.
All overfill prevention devices shall be conductive with the resistance value not greater than 10 Ω;
A vapour tight overfill prevention device shall be tested according to 5.5.4.8, all other devices shall be tested
according to 5.5.4.9.
5.5 Test method
5.5.1 General
One overfill prevention device shall be type tested in accordance with the following tests.
The manufacturer shall compile a list of all components and shall supply specifications to demonstrate that
these components will not be adversely affected in the temperature range of –25 °C to +60 °C.
For all tests other than 5.5.2 and 5.5.3, the overfill prevention device shall be installed in accordance with the
manufacturer’s instructions in a test rig layout as shown in annex B.1.
When an auxiliary power source is used, then it shall be disconnected to insure that the device shall close at
level L .
The tests shall be carried out on one sample unit in the sequence listed below.
5.5.2 Chemical suitability test
The complete overfill prevention device, or parts normally exposed to petroleum liquid or vapours, shall be
subjected to a test cycle as below using the test liquid with the following composition:
 41,5 % in volume of toluene;
 41,5 % in volume of iso octane;
 15 % in volume of methanol;
 2 % in volume of iso butanol.
If parts of the device are subjected to contact with liquid or vapour, the device shall not be disassembled for
this test. Non-contact parts may be protected simulating typical installation or protection by screening,
jacketing, etc.
Test cycle consists of:
a) total immersion in test liquid for 24 h at (20 ± 1) °C;
b) total immersion in saturated vapour of test liquid for 24 h at (20 ± 1) °C;
c) total immersion in test liquid for 24 h at (20 ± 1) °C;
d) 1 h drying at (20 ± 1) °C.
After this test, the device shall be inspected and there shall be no signs of damage, distortion or obvious
malfunction. The remaining type approval tests shall then be carried out in sequence.
5.5.3 Pressure tests
Where any part of overfill prevention device is designed to be installed inside of the tank, it shall be placed in a
closed pressure vessel and subjected to an internal and then to an external pressure for (60 ± 5) min for each
test. The overfill prevention device or any components of it shall not suffer any damage during this test.
The equipment shall be subjected to the following pressures:
 negative pressure: (30 )kPa ;
−5
+10
 pressure: (100 )kPa .
5.5.4 Function tests
5.5.4.1 General
The overfill prevention device shall be mounted in accordance with manufacturer's instructions in a test rig
layout shown in Figure B.1.
The test liquid for these tests can be water containing a corrosion preventing agent or an aliphatic petroleum
distillate. The following tests shall be performed for the subtypes A1 and A2.
5.5.4.2 Level L closure test
The device shall be tested at the minimum and maximum permissible flow rate according to 5.2. The device
shall be closed at level L .
The maximum pressure surge shall not exceed that as specified in 5.3.
After initial level L closure test, the supply system shall be allowed to drain down according to manufacturer’s
instructions and verified to have occurred.
5.5.4.3 Level L closure test
Repeat test according to 5.5.4.2 and on reaching level L , adjust flow control valve within 1 min to provide the
minimum flow rate as specified in 5.2 and check the device as fully closed at level L .
5.5.4.4 Leak tightness after closure test
After closure at level L , measure the leakage rate through the assembly within 1 min. This shall not exceed
the value as specified in 5.4.
5.5.4.5 Pressure surge test
The maximum pressure surge generated at the pressure test point on closure of the device shall be measured
and shall not exceed the requirement as specified in 5.3. This may be checked simultaneously with flow
closure tests according to 5.5.4.2 or 5.5.4.3.
The surge pressure shall be recorded at maximum flow rate in accordance with 5.5.4.2 and 5.3 using a
pressure sensor located in the pipework within 200 mm above the device.
The pressure sensor and its measuring system shall have a response time of 1 ms.
Surge test shall be carried out in accordance with Figure B.1 and the bore size of the hose shall be equal to
the overfill prevention device size.
5.5.4.6 Mechanical strength
With the valve closed, maintain an internal to external pressure of 1,5 time the maximum static pressure
according to 5.2 for (120 ± 10) s. There shall be no permanent deformation after visual examination. The
device shall then be submitted to the endurance test.
5.5.4.7 Endurance test
Repeat tests according to 5.5.4.2 and 5.5.4.3 a further 1 500 times each in sequence. Drain down and allow
valve to reset after each test sequence is completed.
After the endurance test the device shall be retested for operation in accordance with 5.5.4.2, 5.5.4.3 and
5.5.4.4.
5.5.4.8 Vapour tight test procedure
The device shall be installed in the test rig layout according to Figure B.1. The inlet and outlet of the filling line
shall be closed. The line shall have a 3,5 kPa over pressure applied. The pressure shall remain stable for 5
min at (3,5 ± 0,1) kPa. All joints shall be checked with a leak detection medium. No leaks shall be visible.
5.5.4.9 Non vapour tight test procedure
The device shall be installed in the test rig layout according to Figure B.1. The inlet and the outlet shall be
closed. The line shall have a 3,5 kPa over-pressure applied. The volume of air shall be measured by meter
over a 5 min period and the results recorded.
A pipe of the same diameter with a 3 mm hole, replacing the Overfill Prevention Device, shall be installed in
the test rig. The line shall have a 3,5 kPa over pressure applied. The volume of air shall be measured over a 5
minute period and the results recorded. The device will be accepted if the volume recorded is equal or less
than the volume recorded in the pipe with a 3 mm hole.
5.5.4.10 Continuity test
Measure the transition resistance through the body of the overfill prevention device with a resistance meter
with a driven potential of more than 500 V, capable of measuring to 1 MΩ according to EN 60204-1 and
record the transition resistance.
Record the continuity in Ω to comply with 5.4.
5.5.5 Test frequency
Testing shall be carried out at the following level:
 raw material checks: 5 % ;
 components production checks: 5 %;
 manufactured product checks: 100 %.
Each overfill prevention device shall be tested 5 times in accordance with 5.5.4.2, 5.5.4.3 and once in
accordance with 5.5.4.4.
5.6 Test report
Test results shall be recorded in a report.
5.7 Marking
5.7.1 Identification
The device shall be permanently marked with the following information:
 manufacturer's name or mark;
 type and subtype;
 maximum static pressure;
 mandatory markings CE and Ex;
 manufacturing number and year;
 EN number of this standard;
 vapour tight (yes/no).
 temperature range if it is outside the temperature range of –25 °C to +60 °C.
5.7.2 Instruction plate
The overfill prevention device shall be supplied with an instruction plate to be permanently fastened at the
filling point. It shall contain the following information:
 manufacturer;
 type and subtype;
 maximum static pressure;
 instructions in the event of overfill prevention device operating.
 temperature range if it is outside the temperature range of –25 °C to +60 °C.
6 Overfill prevention device Type B
6.1 Specific requirements
A Type B overfill prevention device shall consist of equipment on the static storage tank: sensor and on the
road tank vehicle: controller, and this forms the "overfill prevention system".
6.2 Equipment on the road tank vehicle
The following equipment may be used in conjunction with the equipment on the road tank vehicle or supply
system:
 one or more controllers;
 appropriate devices for stopping the product flow;
 a method of connection from the controller to the storage tank sensor.
6.3 Equipment on the storage tank
The following equipment shall be installed on the storage tank:
 a sensor for each storage tank.
 a method of connection from each storage tank to a controller mounted on the road tank vehicle.
6.4 System working characteristics
6.4.1 General
The system shall detect a predetermined high level condition in each connected storage tank, and provide a
fail-safe output which leads to the shutting off of the liquid flow to ensure that an overfill does not occur. For
the sensors, the temperature range of the product shall be +5 °C to +30 °C.
The overfill prevention system shall work across an interface to ensure the safe working function and self-
checking.
The response time for the shutdown procedure shall be as follows:
 sensor liquid detection to controller output: maximum 2,5 s;
 change of state of sensor from dry to wet: maximum 1 s;
 controller reaction time from permissive to non-permissive: maximum 1,5 s;
 controller output to the ceasing of product flow: maximum 3 s.
The maximum time from the detection of the liquid to the ceasing of product flow is 5,5 s.
The performance requirements for interfaces are as follows.
6.4.2 Interface
6.4.2.1 Current interface mechanical
The plug/socket connection between the controller and the sensor is shown in Figures 1 and 2.
The plugs according to Figure 2 shall be installed in such a way that both sockets according to Figure 1 are
usable.
Dimensions in millimeters
Socket type 903 Socket type AS 903

material plastic (e. g. Polyamide) resistant to liquid petroleum products temperature range of –25 °C to +60 °C
Key
1 Contact tractive power of the spring sleeve min. 2,5 N 4 Listener contact
2 Material: brass nickel plated 5 Thermistor contact 2x
3 Cable strain relief 6 Electrical contact 2x

Figure 1 — Current interface mechanical for the controller
Dimensions in millimeters
Plug type 907 Plug insert
Plug type 907W
Material: brass
Key
1 G1 ½ (ISO 228)
2 Contact pin, Material: brass nickel plated
3 Terminal
4 Insulating sleeve
Figure 2 — Current interface mechanical for the sensor
6.4.2.2 Current interface electrical
The voltage of the measuring circuit has to be stabilized over the whole temperature range to a value of
(19 ± 0,3) V. The voltage value of (19 ± 0,3) V shall also be held up for a load up to a current of 80 mA. The
internal resistance shall be (160 ± 3,2) Ω.
The measuring circuit can be interruptible for the purpose of switching-off. It shall be ensured that there is no
feedback.
Initial current I > I for a minimum of 0,5 s.
Permit signal shall be obtained when the signal is between > I and < I .
3 2
A non-permit signal shall be obtained when the signal is < I and > I .
3 2
If the output of the controller is an electrical signal, it shall not erroneously generate a permissive signal when
connected in reverse polarity.
Fail-safe properties of the sensor and controller shall be in accordance with EN ISO 13849-1 Performance
Level (PL) c, with the restriction to requiring only automatic starting-checking at the beginning of each filling
cycle.
Key
1 Signal "filling permitted"
2 Signal "filling not permitted"
41 mA < I1 < 49,5 ma I1 > I2
38 mA < I2 < 44 mA 0,5 s < x < 180 s
2,0 mA < I3 < 10 mA
Figure 3 — Current interface (electrical)
The explosion-technical parameters for the sensor shall be at least EEx ia IIB T3 according to EN 60079-0
and EN 60079-11.
The explosion-technical maximum values shall be for:
 Maximum output voltage U ≤ 25 V
 Maximum output current I ≤ 165 mA
 Maximum output power P ≤ 1 W.
6.4.2.3 Current Interface – Auxiliary Contact
When crossover prevention devices with PID according to EN 14116 are installed in parallel with overfill
prevention sensors, an optional circuitry of the controller or of the PRD may evaluate the conductivity between
the hose and an additional contact in the plug/socket connection ("listener contact") and thus shall ensure that
only the sensor assigned to the appropriate ground tank can be used to generate the permissive signal.
Figure 4 shows the electrical wiring at the storage tank between the PID and the listener contact. Where
multiple combinations are to be monitored, an optional diode network may be installed instead of a simple
point to point connection.
The method used to detect the listener interconnection shall not interfere with the explosion protection
characteristics of the PID circuitry. Measurement of the voltage at the listener input(s) by the PRD during the
interrogation period of the appropriate PID is recommended.
Key
1 Listener contact
2 Thermistor contacts
3 Insulated hose connection to ground tank
4 Insulation
5 Ground
6 Installation already present for PID installation (EN 14116)
7 Optional diodes for vapour recovery hose assignment
Figure 4 — Electrical wiring at the storage tank between the PID and the listener contact
6.4.3 Voltage interface
6.4.3.1 Connection characteristics
The overfill prevention sensor has two wires. One wire is the power/signal wire and the other wire is the earth
(circuit return) wire. The power/signal connection from the control unit to the sensor is made via the hoses
used for delivery of products. The earth/circuit return connection for all sensors at a site to the controller is
made via the vapour recovery hose or by a direct cable connection to the truck chassis.
The maximum resistance of the controller to sensor(s) connections shall be less than 10 Ω. The circuit design
shall be able to function with a connection resistance of 50 Ω. The insulation resistance of the connection shall
be greater than 15 KΩ.
Fail-safe properties of the sensor and controller shall be in accordance with EN ISO 13849-1 PL d.
Figure 5 defines the waveform limits for the signal that is generated when an overfill prevention sensor is
connected to a controller. This waveform is for a "dry" sensor. When the sensor becomes wet, the waveform
signal ceases. The various states are outlined in the test procedure for the sensor.
The explosion-technical parameters for the interface shall be at least EEx ia IIB T4 according to EN 60079-0
and EN 60079-11.
6.4.3.2 Waveform
The sensor is powered by the controller with a supply voltage of 7 V to 12 V (tolerances are the same as for
V in Figure 5). The sensor draws less than 2 mA current in high state and is capable of sinking greater than
10 mA in low state of the waveform.

Tolerances
T : 10 ms to 100 ms
T - T ≥ (2 + 0,2) ms
2 1
T ≥ (6 + 0,6) ms
Figure 5 — Voltage interface waveform
6.4.4 Binary/Digital interface
This includes the minimum requirements needed to realize the interface between a PRD, installed on a road
tank vehicle and the sensor installed in a storage tank.
The sensor itself may be completely contained within a PID, or connected to a PID, which may be used for
general data transmission between road tank vehicle and storage tank.
As the digital interface of the overfill protection system and its data transmission, respectively, is closely
related to the data protocol of PIDs, the specification for PID and PRD shall be according to EN 14116.
Fail-safe properties of sensor, PID and PRD shall be in accordance with EN ISO 13849-1 PL d.
6.5 Static discharge protection
Suitable static discharge methods shall be provided by resistive paths of not greater than 10 Ω.
6.6 Classification
The overfill prevention device shall be classified according to Table 1.
Table 1 — Classification
Interface Subtype
Current B1
Voltage B2
Binary/Digital B3
6.7 Marking
The device shall be permanently ma
...