oSIST prEN 13160-1:2010

Leak detection systems - Part 1: General Principles

This European Standard specifies the general principles for leak detection systems for use with double-skin
tanks, single-skin tanks and pipework designed for water polluting fluids.

Leckanzeigesysteme - Teil 1: Allgemeine Grundsätze

Diese Europäische Norm legt die allgemeinen Grundsätze für Leck¬anzeigesysteme für den Einsatz in doppelwan¬di¬gen Tanks, ein¬wandigen Tanks und Rohrleitungen für wassergefährdende Flüssigkeiten fest.

Systèmes de détection de fuites - Partie 1: Principes généraux

La présente Norme Européenne spécifie les principes généraux relatifs aux systèmes indicateurs de fuites utilisés avec les réservoirs à double paroi ainsi que les réservoirs et les tuyauteries à simple paroi conçus pour des liquides polluant l'eau.

Sistemi za kontrolo tesnosti - 1. del: Splošna načela

General Information

• Status: Not Published
• Public Enquiry End Date: 19-Oct-2010
• ICS: 23.020.01 - Fluid storage devices in general
• Technical Committee: TLP - Pressure vessels
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 15-Mar-2016
• Due Date: 20-Mar-2016
• Completion Date: 15-Mar-2016
• 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: 73/23/EEC - Electrical equipment designed for use within certain voltage limits
• 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
• Ref Project: prEN 13160-1 rev - Leak detection systems - Part 1: General Principles

Relations

• Revised: SIST EN 13160-1:2003 - Leak detection systems - Part 1: General principles
• Effective Date: 08-Jun-2022
• Revised: SIST EN 13160-1:2016 - Leak detection systems - Part 1: General principles
• Effective Date: 01-Nov-2016
• Revised: SIST EN 13160-1:2003 - Leak detection systems - Part 1: General principles
• Effective Date: 01-Sep-2010

Overview

The oSIST prEN 13160-1:2010 standard, developed by CEN (European Committee for Standardization), specifies general principles for leak detection systems used with tanks and pipework designed to store or transport water-polluting fluids. This European Standard applies to both double-skin tanks and single-skin tanks, as well as their associated pipework. It aims to ensure safety and environmental protection by providing guidelines for detecting leaks promptly, thereby preventing contamination of the surroundings by hazardous liquids.

oSIST prEN 13160-1:2010 is part 1 of a comprehensive series dedicated to leak detection, addressing the foundational principles common across different system types. It supports compliance with essential EU Directives relating to equipment safety and environmental protection.

Key Topics

• Classes of Leak Detection Systems: The standard outlines five distinct classes of leak detection systems based on their protective capabilities and risk of environmental contamination:

  • Class I: Detect leaks in double-skin tanks above or below liquid level with high safety, preventing any liquid environmental release.
  • Class II: Detect leaks in double-skin tanks but with some potential environmental leakage.
  • Class III: Detect leaks below liquid level using sensors in containment spaces; some risk of environmental contamination exists.
  • Class IV: Monitor tank content changes through dynamic or static methods; higher probability of leaks entering the environment.
  • Class V: Sensors in monitoring wells detect leaks post-release into the environment.

• Components and Terminology: The standard defines key terms:

  • Interstitial Space: The gap between inner and outer tank walls where leak detection occurs.
  • Leak Protecting Lining and Jacket: Internal or external layers designed to create or maintain suitable interstitial spaces.
  • Leak Indicating Devices: Equipment that signals leak presence via alarms or alerts.

• Safety and Operational Requirements:

  • Avoidance of ignition sources and classification requirements for electrical and non-electrical equipment.
  • Function and performance tests for audible alarms as leak warning indicators.
  • Inspection and maintenance guidelines to ensure ongoing reliability and conformity.

• Environmental Considerations:

  • Measures for minimizing environmental impact are integrated into the system design and operation.
  • The standard encourages compliance with environmental protection regulations.

• Conformity and Marking:

  • Clear system for evaluating conformity with the standard's principles and requirements.
  • Marking protocols for equipment to verify compliance and safety.

Applications

oSIST prEN 13160-1:2010 applies primarily to organizations involved in:

• Designing and manufacturing storage tanks and pipework systems that contain potentially water-polluting fluids.
• Installing leak detection systems in industrial, commercial, and municipal environments to monitor for leaks efficiently.
• Regulatory compliance and environmental protection agencies requiring adherence to European norms for hazardous liquid containment.
• Monitoring and maintenance services tasked with testing, inspecting, and ensuring the functionality of leak detection equipment.

The standard supports industries where environmental safety and leak prevention are critical, including:

• Chemical manufacturing and storage
• Fuel and oil storage facilities
• Water treatment plants
• Waste management and contaminated site remediation
• Filling stations and transport terminals

Using this standard improves early leak detection, reduces risks of environmental contamination, and ensures conformity with EU regulations.

Related Standards

The oSIST prEN 13160-1:2010 standard is part of a broader family including:

• EN 13160-2: Pressure and vacuum leak detection systems.
• EN 13160-3: Liquid leak detection for tanks.
• EN 13160-4: Liquid and vapor sensor systems for leakage containments or interstitial spaces.
• EN 13160-5: Tank gauge leak detection systems.
• EN 13160-6: Sensors in monitoring wells.
• EN 13160-7: General requirements and test methods for interstitial spaces, linings, and jackets.

Additionally, it references established standards for explosion-proof and electrical equipment (e.g., EN 60079 series) and safety principles (EN 60073).

Conclusion

oSIST prEN 13160-1:2010 establishes critical general principles to guide the design, testing, and use of leak detection systems safeguarding tanks and pipework containing hazardous, water-polluting fluids. Adoption of this standard ensures enhanced safety, early leak identification, and regulatory compliance across Europe, fostering environmental protection and industrial reliability.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2010
6LVWHPL]DNRQWURORWHVQRVWLGHO6SORãQDQDþHOD
Leak detection systems - Part 1: General Principles
Leckanzeigesysteme - Teil 1: Allgemeine Grundsätze
Systèmes de détection de fuites - Partie 1: Principes généraux
Ta slovenski standard je istoveten z: prEN 13160-1 rev
ICS:
23.020.01 9VHEQLNL]DVKUDQMHYDQMH Fluid storage devices in
WHNRþLQQDVSORãQR general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
prEN 13160-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2010
ICS 23.020.01; 23.040.99 Will supersede EN 13160-1:2003
English Version
Leak detection systems - Part 1: General Principles
Systèmes de détection de fuites - Partie 1: Principes Leckanzeigesysteme - Teil 1: Allgemeine Grundsätze
généraux
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 13160-1:2010: E
worldwide for CEN national Members.

prEN 13160-1:2010 (E)
Contents
page
Foreword . 4
1 Scope . 5
2 Normative references . 5
3 Classes of leak detection systems . 6
4 Terms and definitions . 6
5 Requirements . 9
5.1 General . 9
5.2 Avoidance or reduction of ignition sources . 9
5.2.1 General requirements . 9
5.2.2 Electrical equipment for leak detection systems . 10
5.2.3 Non electrical equipment for leak detection systems . 10
5.3 Leak indicating device . 10
5.4 Function test of the audible alarm transmitter . 10
5.4.1 Test objective . 10
5.4.2 Preparation . 11
5.4.3 Evaluation . 11
5.4.4 Test method . 11
5.5 Device categories for explosion-proof parts of the leak detection system . 11
5.6 Inspection of equipment . 11
5.7 Instruction . 11
6 Environmental aspects . 11
7 Marking . 12
8 System of evaluation of conformity . 12
Annex A (informative) Examples of leak detection systems . 13
A.1 Leak detection systems – class I . 13
A.2 Leak detection systems – class II . 16
A.3 Leak detection systems – class III . 16
A.4 Leak detection systems – class IV . 17
A.5 Leak detection system – class V . 18
Annex B (informative) Equipment categories for explosion-proof parts of the leak detection
systems . 19
Annex C (normative) Evaluation of conformity . 20
C.1 General . 20
C.2 Initial type-testing of the product . 20
C.2.1 All classes (EN 13160–1:2003) . 20
C.2.2 Class I (EN 13160-2:2003) . 20
C.2.3 Class II (EN 13160–3:2003) . 21
C.2.4 Class III (EN 13160–4:2003) . 22
C.2.5 Class IV (EN 13160–5:2004) . 22
C.2.6 Class V (EN 13160-6:2003) . 23
C.2.7 Interstitial spaces, leak protecting linings and leak protecting jackets (EN 13160–7:2003) . 23
C.3 Factory production control . 24
C.3.1 General . 24
C.3.2 Requirements of the factory production control . 25
prEN 13160-1:2010 (E)
Annex D (informative) Third party certification of quality control . 28
Annex E (informative) Environmental aspects . 29
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EC Directive (89/106/EEC) . 31
ZA.1 Scope and relevant clauses . 31
ZA.2.2 EC Declaration of conformity . 33
ZA.3 CE marking . 34
Annex ZB (informative) Relationship between this European Standard and the Essential
Requirements of EC Directive 94/9/EC Equipment and protective systems for use in
potentially explosive atmospheres . 36
Annex ZC (informative) Relationship between this European Standard and the Essential
Requirements of EC Directive 2006/95/EC Electrical equipment designed for use within
certain voltage limits . 38
Bibliography . 39

prEN 13160-1:2010 (E)
Foreword
This document (prEN 13160-1:2010) 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 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(s).
For relationship with EU Directive(s), see informative Annex ZA, ZB and ZC, which are integral parts of this
document.
Annexes A, B, D and E are informative. Annex C is normative.
This document includes a Bibliography.
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.
This document will supersede EN 13160-1:2003.
According to EN 13160-1:2003 the following fundamental changes are given:
 audible alarm changed in accordance with EN 60073;
 information concerning environmental aspects included;
 referred standards updated.
This European Standard consists of 7 parts:
Leak detection systems —
Part 1: General principles
Part 2: Pressure and vacuum systems
Part 3: Liquid systems for tanks
Part 4: Liquid and/or vapour sensor systems for use in leakage containments or interstitial spaces
Part 5: Tank gauge leak detection systems
Part 6: Sensors in monitoring wells
Part 7: General requirements and test methods for interstitial spaces, leak protecting linings and leak
protecting jackets
prEN 13160-1:2010 (E)
1 Scope
This European Standard specifies the general principles for leak detection systems for use with double-skin
tanks, single-skin tanks and pipework designed for water polluting fluids.
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 13160-2:2003, Leak detection systems — Part 2: Pressure and vacuum systems
EN 13160-3:2003, Leak detection systems — Part 3: Liquid systems for tanks
EN 13160-4:2003, Leak detection systems — Part 4: Liquid and/or vapour sensor systems for use in leakage
containments or interstitial spaces
EN 13160-5:2004, Leak detection systems — Part 5 : Tank gauge leak detection systems
EN 13160-6:2003, Leak detection systems — Part 6 : Sensors in monitoring wells
EN 13160-7:2003, Leak detection systems — Part 7: General requirements and test methods for interstitial
spaces, leak protecting linings and leak protecting jackets
EN 13352, Specification for the performance of automatic tank contents gauges
EN 13463-1:2001, Non-electrical equipment intended 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 60079-6, Explosive atmospheres — Part 6: Equipment protection by oil immersion "o" (IEC 60079-6:2007)
EN 60079-2, Electrical apparatus for explosive gas atmospheres — Part 2: Pressurized enclosures "p"
(IEC 60079-2:2001)
EN 60079-5, Explosive atmospheres — Part 5: Equipment protection by powder filling "q" (IEC 60079-5:2007)
EN 60079-1, Electrical apparatus for explosive gas atmospheres — Part 1: Flameproof enclosures "d"
(IEC 60079-1:2003)
EN 60079-7, Explosive atmospheres — Part 7: Equipment protection by increased safety "e"
(IEC 60079-7:2006)
EN 60079-11, Explosive atmospheres — Part 11: Equipment protection by intrinsic safety "i"
(IEC 60079-11:2006)
EN 60079-18, Electrical apparatus for explosive gas atmospheres — Part 18: Construction, test and marking
of type of protection encapsulation "m" electrical apparatus (IEC 60079-18:2004)
EN 60079-25, Electrical apparatus for explosive gas atmospheres — Part 25: Intrinsically safe systems
(IEC 60079-25:2003)
EN 60073, Basic and safety principles for man-machine interface, marking and identification — Coding
principles for indicators and actuators (IEC 60073:1996)
prEN 13160-1:2010 (E)
EN 60335–1, Household and similar electrical appliances – Safety — Part 1 : General requirements
(IEC 60335-1:2001, modified)
EN 60529, Degrees of protection provided by enclosures (IP-code) (IEC 60529:1989)
EN 60730–1, Automatic electrical controls for household and similar use — Part 1 : General requirements
(IEC 60730-1:1999, modified)
EN 61010–1, Safety requirements for electrical equipment for measurement, control and laboratory use —
Part 1: General requirements (IEC 61010-1:2001)
ISO 2859–1, Sampling procedures for inspection by attributes — Part 1 : Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by lot inspection
3 Classes of leak detection systems
For the purpose of this standard the following classes apply in order of protection for the level of safety or
environmental protection required:
Class I: Systems of this class will detect a leak above or below the liquid level in a double-skin system.
They are inherently safe and will detect a leak before any liquid can enter the environment (i. e.
pressure or vacuum systems).
Class II: Systems of this class will detect a leak above or below the liquid level in a double-skin system
with the possibility of the leak detection liquid leaking into the environment (i. e. liquid monitoring
system).
Class III: Systems of this class will detect a leak below the liquid level in a tank or in a pipework system.
These systems are based on liquid and/or vapour sensors located in leakage containment or
interstitial space. A possibility exists of product entering the environment.
Class IV: Systems of this class will detect, to specific levels of probability, specified rates of change of tank
contents (i. e. leakages into or out of the tank). A strong possibility exists that product will enter
the environment in the event of a leak.
Class IV A: Dynamic leak detection systems will by reconciliation also indicate leaks in the connected
pipework
Class IV B: Static tank gauge leak detection systems or statistical quiet period leak detection systems will
only indicate leaks from a tank.
Class V: Systems of this class may detect liquid loss in tanks or pipes below the liquid level. Product will
enter the environment before the leak is detected (i. e. sensors in monitoring wells).
For examples for the different classes see annex A.
4 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
4.1
atmospheric pressure conditions
pressures ranging from 0,08 MPa (0,8 bar) to 0,11 MPa (1,1 bar)
prEN 13160-1:2010 (E)
4.2
leak detection system
includes all equipment required to indicate a leak
NOTE Main components could include the interstitial space, leak protecting linings, leak protecting jacket, leak
indicating device, leak detector, system pipework, leak detecting media, monitoring wells or sensors.
4.3
interstitial space
space between the walls of double-skin systems. It provides the passage for fluids which may enter the
interstitial space
4.4
double-skin tank
tank constructed with an inner and outer wall with an interstitial space where the maximum filling level of the
tank does not exceed the height of the interstitial space
4.5
single-skin tank
tank constructed with a single wall
4.6
leak protecting lining
internal layer which solely or in conjunction with an intermediate material produces a suitable interstitial space
4.7
leak protecting jacket
external layer which solely or in conjunction with an intermediate material produces a suitable interstitial space
4.8
intermediate layer
material used to separate the inner and outer tank walls, the intermediate layer may or may not be attached to
either one or both walls, it provides separation of the inner and outer walls
4.9
double-skin pipework
pipework constructed with an inner and outer wall with an interstitial space
4.10
single-skin pipework
pipework constructed with a single wall
4.11
vacuum leak detector
a leak detector for vacuum detects a leak using air as the leak detection medium, with vacuum leak detectors
an alarm is triggered by rise of pressure in the interstitial space in the event of a leak
4.12
pressure leak detector
a leak detector for pressure detects a leak using air or inert gas as the leak detection medium. With pressure
leak detectors, in the event of a leak, an alarm is triggered by a drop in the pressure within the interstitial
space
4.13
leak detector for liquid systems
indicates a leak using liquid as a leak detection medium, any leak in either of the system walls is indicated by
a drop of the leak detection fluid level
prEN 13160-1:2010 (E)
4.14
liquid sensor
device which will detect liquid
4.15
vapour sensor
device which will detect gas and vapour
4.16
leak indicating device
indicates the operational and the alarm status of any connected sensors or leak detectors
4.17
tank gauge leak detection system
a tank gauge system measures the volume of liquid stored in a tank, a loss can be indicated where the
volume of liquid drawn from the tanks is monitored independently from the gauge and reconciled with changes
in the stored volume, a loss can also be indicated by analysis of the changes in "static" liquid volume during
periods when no additions to, or depletions, from the tank are taking place
4.17.1
static leak detection
where a tank integrity test is carried out by the gauge whilst no additions to or depletions from the tank
contents are being made
4.17.2
dynamic leak or loss detection
where the tank contents gauge forms part of an integrated detection system and is used to detect a leak or
loss during normal operation where additions to or depletion from the tank contents may be made, a loss can
be detected in tanks and pipeworks, connected with the tank, which may indicate a leak
4.17.3
statistical quiet period leak detection
where the gauge system collects data during intervals (which are shorter than required for static leak
detection) between dispensing and delivery operations, the data are then analyzed to determine if a loss has
occurred, which may indicate a leak
4.17.4
tank integrity test
test which is capable of detecting a leakage rate in accordance with a given test procedure, the test takes into
account the thermal expansion of the liquid being stored, evaporative losses and the effects of any other
variables including groundwater level
4.18
monitoring wells
wells installed into the ground around a storage system, positioned to ensure that any liquid or vapour from a
leakage from the system will reach one of them
NOTE The monitoring well is used to ensure that the leakage can be detected visually or by sensors.
4.19
leakage containment
system, which is designed to prevent leakage from a primary system entering the environment and which
enables the detection of leakage
4.20
frost protected area
area where the temperature will not go below 0 °C
prEN 13160-1:2010 (E)
4.21
stop valve
valve used to prevent the passage of liquid beyond a fixed point in a connecting line
4.22
sensor system
arrangement whereby liquid and/or vapour sensors are used in leakage containments or interstitial spaces
and are monitored by a leak indicating device for the purpose of detecting leaks
5 Requirements
5.1 General
Leak detection systems shall trigger the alarm in the event of a leak or in the event of malfunctions of the leak
detection system. All leak detection systems shall indicate every leak by a visual and audible alarm.
In the event of a power interruption, the leak detection system shall be designed to resume normal operation
on the restoration of the power supply.
Leak detection systems shall be designed for operation under atmospheric conditions according to 4.1.
The components of a leak detection system intended for installation in the open air shall be suitable to operate
in a temperature range of -20 °C to +60 °C or –40 °C to +40 °C.
Components of a leak detection system intended for installation in frost-protected area shall be suitable to
operate in a temperature range of -5 °C to +50 °C.
Components of a leak detection system intended for installation in underground tanks shall be suitable to
operate in a temperature range of -5 °C to +30 °C.
Leak detection systems and/or their components intended for installation in a potentially explosive atmosphere
shall be explosion protected. If there exists the possibility of an explosive atmosphere being present within the
leak detection system and/or its components these shall be explosion protected.
The leak detection systems shall be designed for installation in such a way to prevent accidental
disconnection of the equipment's power supply. Plug and socket connections or switches are only permitted if
their interruption triggers off an alarm.
The leak detection system shall be capable of being tested or capable of simulating a leak condition.
Disconnections of any sensor or transducer or a short circuit in connecting cables shall result in an alarm
condition. All indications and sounders shall be capable of being tested.
The leak detection systems shall be designed so that correct operation can be verified.
The leak detection systems shall be used and maintained in accordance with the manufacturer's instruction.
If a leak detector serves more than one tank or pipework equipment is required which shows or allows to test
in an event of an alarm which tank or pipework leaks.
5.2 Avoidance or reduction of ignition sources
5.2.1 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
with the required categories for group II equipment to ensure avoidance of any ignition source. To classify the
prEN 13160-1:2010 (E)
category of the equipment it shall be subjected to an ignition hazard assessment in accordance with 5.2 of EN
13463-1:2001.
The suitable category for the explosion protected equipment parts, for use in certain areas of the leak
detection systems, are detailed in annex B.
5.2.2 Electrical equipment for leak detection systems
5.2.2.1 General
Any electrical equipment, which is intended for use in or which may be exposed to potentially explosive
atmospheres, shall comply with the requirements according to EN 60079-0 to EN 60079-2, EN 60079-5 to
EN 60079-7, EN 60079-11, EN 60079-18 or EN 60079-25 as appropriate, or any other means of protection.
All electrical equipment shall comply with the requirements according to EN 60073, EN 60335-1, EN 60730-1
and EN 61010-1 and shall fulfil minimum IP 30 according to EN 60529.
The electrical equipment shall be protected from any external influences such that it will withstand the
temperature, chemical and mechanical impact that are to be expected on site.
5.2.2.2 Inspection of the electrical equipment
Electrical equipment shall be inspected visually to confirm that it is constructed in accordance with the
electrical diagrams and certificates of conformity provided by the manufacturer.
5.2.3 Non electrical equipment for leak detection systems
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.
Non electrical equipment shall be protected from any external influence such that it will withstand the
temperature, chemical and mechanical impact that are to be expected on site.
5.3 Leak indicating device
The operating condition shall be clearly indicated, i. e. by a "green" light.
The visual alarm shall be clearly indicated, i. e. by a "red" light.
It shall be impossible to switch off the visual alarm while the system is powered on and an alarm condition
exists.
The audible alarm shall be an up-and-down signal according to EN 60073, suitable for continuous operation
and shall be designed for muting.
All leak indicating devices shall be designed for connecting an additional alarm. The output parameter shall be
stated.
All indicators shall be equipped with a device for testing the operating condition of the alarm.
5.4 Function test of the audible alarm transmitter
5.4.1 Test objective
The test objective is to ensure that the alarm is loud enough to be heard and that the volume level is
maintained for a minimum period of 36 h.
prEN 13160-1:2010 (E)
5.4.2 Preparation
For the purpose of this test the leak detector with the signal device shall be mounted with the fastening device
supplied by the manufacturer to a solid and reverberant wall. A wall is considered solid if a section of the wall
having a surface area of 1 m weighs at least 200 kg and reverberant if it has an absorption coefficient for
sound of s ≤ 0,05.
5.4.3 Evaluation
The test will be deemed to have been passed if the measured value for the continuous sound level is ≥ 70 dB
(A) after the fatigue test.
5.4.4 Test method
The audible signal device shall be sounded continuously for at least 36 h in a fatigue test. On completion of
the fatigue test the sound level shall be measured by a continuous signal. The arithmetic mean shall be taken
from at least three measuring points.
These measuring points shall be located approximately equidistant on a hemisphere extending over the leak
detector front. The radius of the hemisphere shall be r = 1 m. The outer measuring points are to be chosen
such that the radius describes an angle of 45 ° referred to the leak detector or indicator front at these points.
5.5 Device categories for explosion-proof parts of the leak detection system
See annex B.
5.6 Inspection of equipment
The user shall ensure before use of the equipment that,
 the electrical equipment and the system shall be suitable for its application in a hazardous area and
 the equipment has been installed in accordance with the manufacturer's instructions.
5.7 Instruction
All leak detection systems shall be accompanied by instruction as to:
 safe installation, use and maintenance;
 assessment of safe operation condition and possible misuse;
 limitation of equipment, e.g. temperature, pressure regulation;
 essential characteristic of tools used;
 training needed for safe use of equipment.
 The standards for which the system has been tested e. g. for electromagnetic compatibility (EMC)
compliance or low voltage directive.
6 Environmental aspects
Environmental aspects should be considered according to Annex E.
prEN 13160-1:2010 (E)
7 Marking
The following information shall be marked on the product:
 Manufacturer;
 Year of production;
 Identification number;
 Class number and EN – number;
 Temperature range;
 Identification symbol or number of the certified body, if relevant
Where ZA.3 covers the same information as this clause, requirements of this clause are met.
8 System of evaluation of conformity
According to annex C.
prEN 13160-1:2010 (E)
Annex A
(informative)
Examples of leak detection systems
A.1 Leak detection systems – class I

Key
1 Pressure line 4 Measuring device for pressure
2 Measuring line 5 Alarm (visual and audible)
3 Leak detector
Figure A.1 — Pressure systems with integrated pressure generator for tanks

Key
1 Stop valve 5 Alarm (visual and audible)
2 Suction line 6 Measuring line
3 Leak detector 7 Exhausting line
4 Measuring device for pressure
Figure A.2 — Vacuum systems with integrated vacuum generator for tanks
prEN 13160-1:2010 (E)
Key
1 Measuring device for pressure
2 Leak detector
3 Alarm (visual and audible)
4 Test valve
Figure A.3 — Vacuum systems without integrated vacuum generator for tanks

Key
1 Test coupling
2 Pressure leak detector
3 Alarm (visual and audible)
4 Pressure reducer
5 Nitrogen bottle
6 Test valve
7 Double-skin pipework
8 Pressure line
Figure A.4 — Pressure system with integrated pressure generator
prEN 13160-1:2010 (E)
Key
1 Test coupling 5 Nitrogen bottle (remove after first filling)
2 Pressure leak detector 6 Test valve
3 Alarm (visual and audible) 7 Double-skin pipework
4 Pressure reducer 8 Pressure line
Figure A.5 — Pressure system without integrated pressure generator for pipework

Key
1 Stop valve 6 Measuring line
2 Vacuum leak detector 7 Test valve
3 Alarm (visual and audible) 8 Double-skin pipework
4 Three way valve 9 Suction line
5 Exhausting line
Figure A.6 — Vacuum system with integrated vacuum generator for pipework
prEN 13160-1:2010 (E)
A.2 Leak detection systems – class II

Key
1 Leak detection liquid tank 4 Alarm (visual and audible)
2 Liquid sensor 5 Test valve
3 Leak indicating device 6 Interstitial space with leak detection liquid
Figure A.7 — Liquid system for tanks
A.3 Leak detection systems – class III

Key
1 Leak indicating device
2 Alarm (visual and audible)
3 Sensor
Figure A.8 — Liquid and vapour sensor system for use in an interstitial space
prEN 13160-1:2010 (E)
Key
1 Filling line
2 Protecting pipe
3 Leak indicating device
4 Alarm (visual and audible)
5 Leakage containment
6 Sensor
Figure A.9 — Liquid and vapour sensor system for use in a leakage containment
A.4 Leak detection systems – class IV

Key
1 Indicator for dispensed volume
2 Data line
3 Tank gauge processor
4 Alarm (visual and audible)
5 Tank gauge
Figure A.10 — Tank gauge leak detection system – Category A
prEN 13160-1:2010 (E)
Key
1 Indicator for dispensed volume
2 Data line
3 Tank gauge processor
4 Alarm (visual and audible)
5 Tank gauge
Figure A.11 — Tank gauge leak detection system – Category B
A.5 Leak detection system – class V

Key
1 Leak indicating device
2 Alarm (visual and audible)
3 Monitoring well
4 Sensor
Figure A.12 — Sensors in monitoring wells
prEN 13160-1:2010 (E)
Annex B
(informative)
Equipment categories for explosion-proof parts of the leak detection
systems
Leak detection systems or their components can be installed in different hazardous areas (zones) or also in
non-hazardous areas. EN 1127-1 specifies methods for the identification of hazardous situations leading to
explosion and the design and construction measures appropriate for the required safety. The definition of
zones and categories and the relation between categories and zones are detailed in this standard. It is the
responsibility of the user to choose the suitable category of the equipment for installation in a particular zone.
If the stored product is a liquid with a flash point below 55 °C, equipment installed in certain locations will
conform to one of the categories of equipment defined in EN 1127-1. Table B.1 shows the equipment
categories which typically will be used in certain areas of the system. However, these categories can be
varied where prevailing regulations or other constraints apply.
NOTE 1 For equipment outside the interstitial space reduced requirements could apply, see Table B.1.
NOTE 2 If the interstitial space and/or components of the leak detection system are not chemically resistant to any
liquids with which they can come into contact, there can be a risk of the generation of an explosive atmosphere.
Regardless of these proposals the requirements arising from the potentially explosive atmospheres at the
place of installation should apply.
Table B.1 — Equipment categories
Definition of system areas Equipment
category
Inner part of the tank 1
Monitoring well 2
Interstitial space inner wall with monitoring medium air 1
permeation by the stored
monitoring with secured no requirements
product
medium recharging facility
inert gas without secured 2 or 3
recharging facility
inner wall without monitoring vacuum  1 or 2
permeation by the stored medium
pressure without secured 2
product air
recharging facility
Pressure with secured 3
recharging facility
monitoring with secured recharging no requirements
medium facility
inert gas
without secured
no requirements
recharging facility
prEN 13160-1:2010 (E)
Annex C
(normative)
Evaluation of conformity
C.1 General
This annex specifies procedures and requirements for the evaluation of conformity for leak detection systems.
The purpose is the evaluation of conformity of the leak detection systems on the basis of
 initial type-testing of the product
 factory production control.
Initial type testing shall be performed on first application of this standard. Tests previously performed in
accordance with the provisions of this standard (same product, same characteristic(s), test method, sampling
procedure, system of attestation of conformity, etc.) may be taken into account. In addition, initial type testing
shall be performed at the beginning of the production of a new leak detection systems or at the beginning of a
new method of production (where this may affect the stated properties).
C.2 Initial type-testing of the product
C.2.1 All classes (EN 13160–1:2003)
Designation of the type test Clause  Page
----------------------------------------------------------------------------------------------------
Inspection of the electrical equipment 5.2.2  8
Inspection of the leak indicating device 5.3  8
Function test of the audible alarm transmitter 5.4  9
Inspection of equipment 5.6  9
Inspection of marking 6  10
C.2.2 Class I (EN 13160-2:2003)
Pressure and vacuum leak detectors
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
Pressure limit switch test 8.1.3  9
Test of the reliability 8.1.4  12
Pressure test 8.1.6  16
prEN 13160-1:2010 (E)
Additional for vacuum leak detectors
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
Function test of the alarm 8.1.5  14
Test of the stop valve 8.2  16
Test of the condensate trap 8.3  18

Additional for pressure leak detectors
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
Test of the pressure relief valve Annex A 19

C.2.3 Class II (EN 13160–3:2003)
Leak detector
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
Test of the components 7.1  7
Function test 7.3  7
Leak detection liquid
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
Determination of the freezing point and the
viscosity 7.4.4  9
Determination of the coefficient
of thermal expansion 7.4.5  9
Determination of the flash point 7.4.6  9
Determination of the fungicidal properties 7.4.7  9
Determination of the segregation 7.4.8  9
Determination of the compatibility with
metallic materials 7.4.9  10
Tests for harmful effects on contact with
groundwater 7.4.10  10
prEN 13160-1:2010 (E)
C.2.4 Class III (EN 13160–4:2003)
Liquid sensors
Designation of the type test Clause  Page
----------------------------------------------------------------------------------------------------
Suitability test (response- and recovery time) 10  5

Discriminating liquid sensors
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
Suitability test (response- and recovery time) 11  8

Vapour sensors
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
Suitability test (lower limit of detection
with response- and recovery time) 12  14

Submerged vapour sensors
Designation of the type test Clause  Page
----------------------------------------------------------------------------------------------------
Suitability test (response- and recovery time) 13  19

C.2.5 Class IV (EN 13160–5:2004)
Category A and category B(1)
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
File sorting and selection 9.3.1  6
Simulated tank leaks (constant) 9.3.2  8
Simulated tank leaks (variable) 9.3.3  8
Simulated pipe leaks
(suction and pressurised draw-off) 9.3.4  9
Induced leak rates – quantitative systems 9.3.5  10
Induced leak rates – qualitative systems 9.3.6  10
prEN 13160-1:2010 (E)
Test sequence 9.3.7  10
Test results analysis and report 9.4  11
Statistical analysis 9.5  12
Category B(2)
Designation of the type test Clause  Page
----------------------------------------------------------------------------------------------------
Stabilisation and trial run 10.4.2  19
Test procedure 10.4.3  19
Test results 10.5  23
Statistical analysis 10.6  23

C.2.6 Class V (EN 13160-6:2003)
Discriminating liquid sensors
according to C.2.4
Vapour sensors
according to C.2.4
Submerged vapour sensors
according to C.2.4
C.2.7 Interstitial spaces, leak protecting linings and leak protecting jackets
(EN 13160–7:2003)
Interstitial space
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
Proof of the tightness and the strength of the
interstitial space 5.4  6
Test of the free passage of liquid 5.5  6
Test of the free passage of air 5.6  7
Flow rate test of the intermediate layer 5.7  7
Determination of the flow resistance 5.8  9
Determination of the interstitial space volume for
class I-systems 5.9  12
prEN 13160-1:2010 (E)
Additional for flexible leak protecting linings
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
Test of material 6.3.5.2  18
Test of impact for the guard plate or the lining itself,
if it is used without a guard plate 6.3.5.3  18

Additional for GRP-rigid leak protecting linings
Designation of the type test Clause  Page
--------------------------------------------------------------------------------------------------
Test of material 6.4.5  22
Additional for leak protecting jackets
Designation of the type test Clause  Page
---------------------------------------------------------------------------------------------------
Test of material 7.4.1  24
Jacket impact type test 7.4.2  24
C.3 Factory production control
C.3.1 General
The factory production control should guarantee a constant quality of the leak detection devices as part of a
safety device.
The following points shall be considered:
 The manufacturer shall establish and maintain a quality system for the factory production control.
 Carrying out of a routine check test of leak detectors, leak protecting linings, leak protecting jackets and
interstitial s
...