oSIST prEN 13160-3:2010

Leak detection systems - Part 3: Liquid systems for tanks

This European Standard specifies the requirements for leak detection systems – class II for use with doubleskin
tanks designed for water polluting fluids.

Leckanzeigesysteme - Teil 3: Flüssigkeitssysteme für Tanks

Diese Europäische Norm legt die Anforderungen an Leckanzeigesysteme – Klasse II für den Einsatz in doppelwan¬di¬gen Tanks für wassergefährdende Flüssigkeiten fest.

Systèmes de détection de fuites - Partie 3: Systèmes à liquide pour des citernes

La présente Norme européenne spécifie les prescriptions relatives aux systèmes de détection de fuites de classe II conçus pour une utilisation dans des systèmes à double paroi destinés à transporter des liquides polluant l'eau.

Sistemi za zaznavanje tesnosti - 3. del: Sistemi z medplaščno tekočino za rezervoarje

General Information

• Status: Not Published
• Public Enquiry End Date: 19-Oct-2010
• ICS: 23.020.10 - Stationary containers and tanks
• ICS: 23.040.99 - Other pipeline components
• 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
• Ref Project: prEN 13160-3 rev - Leak detection systems - Part 3: Liquid systems for tanks

Relations

• Revised: SIST EN 13160-3:2004 - Leak detection systems - Part 3: Liquid systems for tanks
• Effective Date: 01-Sep-2010
• Revised: SIST EN 13160-3:2004 - Leak detection systems - Part 3: Liquid systems for tanks
• Effective Date: 18-Jan-2023
• Revised: SIST EN 13160-3:2004 - Leak detection systems - Part 3: Liquid systems for tanks
• Effective Date: 19-Jan-2023
• Revised: SIST EN 13160-3:2004 - Leak detection systems - Part 3: Liquid systems for tanks
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 13160-3:2010
01-september-2010
6LVWHPL]DNRQWURORWHVQRVWLGHO6LVWHPLVWHNRþLQR]DUH]HUYRDUMH
Leak detection systems - Part 3: Liquid systems for tanks
Leckanzeigesysteme - Teil 3: Flüssigkeitssysteme für Tanks
Systèmes de détection de fuites - Partie 3: Systèmes à liquide pour des citernes
Ta slovenski standard je istoveten z: prEN 13160-3 rev
ICS:
23.020.10 1HSUHPLþQHSRVRGHLQ Stationary containers and
UH]HUYRDUML tanks
23.040.99 Drugi sestavni deli za Other pipeline components
cevovode
oSIST prEN 13160-3:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 13160-3:2010

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oSIST prEN 13160-3:2010


EUROPEAN STANDARD
DRAFT
prEN 13160-3
NORME EUROPÉENNE

EUROPÄISCHE NORM

July 2010
ICS 23.020.01; 23.040.99 Will supersede EN 13160-3:2003
English Version
Leak detection systems - Part 3: Liquid systems for tanks
Systèmes de détection de fuites - Partie 3: Systèmes à Leckanzeigesysteme - Teil 3: Flüssigkeitssysteme für
liquide pour des citernes Tanks
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 13160-3:2010: E
worldwide for CEN national Members.

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Contents
page
Foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General . 6
5 Interstitial space. 6
6 Leak detector for liquid systems . 6
6.1 Leak detector liquid tanks . 6
6.2 Leak detection liquids . 7
6.3 Liquid sensors . 8
6.4 Connection lines between leak detectors liquid tanks and interstitial space . 8
7 Type test . 8
7.1 Test of components . 8
7.2 Test equipment . 8
7.3 Function test . 9
7.3.1 Test objective . 9
7.3.2 Preparation . 9
7.3.3 Evaluation . 9
7.3.4 Test method for the durability . 9
7.3.5 Test method for the reliability test . 9
7.4 Type test of leak detection liquids for use in class II leak detection systems . 11
7.4.1 Test objective . 11
7.4.2 Evaluation . 11
7.4.3 Test equipment . 11
7.4.4 Determination of the freezing point and of the viscosity . 11
7.4.5 Determination of the coefficient of thermal expansion . 11
7.4.6 Determination of the flash point . 11
7.4.7 Determination of the fungicidal properties . 11
7.4.8 Determination of the segregation . 12
7.4.9 Determination of the compatibility with metallic materials . 12
7.4.10 Tests for harmful effects on contact with groundwater . 12
8 Environmental aspects . 13
9 Marking . 13
Annex A (normative) Test of the fungicidal properties of leak detection liquids . 14
A.1 Test equipment . 14
A.2 Test method . 14
A.3 Test results . 14
A.4 Evaluation of the test result . 14
Annex B (normative) Test of the compatibility of leak detection liquids with metals . 16
B.1 Test equipment . 16
B.2 Test specimen . 16
B.3 Preparation of the test liquid . 17
B.4 Test method . 17
B.5 Test results . 18
B.5.1 Visual inspection . 18
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B.5.2 Determination of the change of mass . 18
B.5.3 Computation of the rate of uniform corrosion . 18
B.5.4 Evaluation of the test results . 19
Annex C (informative) Environmental aspects . 20
Bibliography . 22


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Foreword
This document (prEN 13160-3:2010) 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.
Annexes A and B are normative. Annex C is informative.
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 13160-3:2003.
According to EN 13160-3:2003 the following fundamental changes are given:
 electrical conductivity for the leak detection liquid changed;
 tests for the leak detection liquid concerning harmful effects on contact with groundwater revised;
 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


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oSIST prEN 13160-3:2010
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1 Scope
This European Standard specifies the requirements for leak detection systems – class II for use with double-
skin tanks 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 1412, Copper and copper alloys — European numbering system
EN 1652, Copper and copper alloys — Plate, sheet, strip and circles for general purposes
EN 10027–1, Designation systems for steel — Part 1: Steel names, principal symbols
EN 13160–1:2003, Leak detection systems — Part 1: General principles
EN 13160–7, Leak detection systems — Part 7: General requirements and test methods for interstitial spaces,
leak protecting linings and leak protecting jackets
EN 60079-0, Electrical apparatus for explosive gas atmospheres — Part 0: General requirements
(IEC 60079-0:2004, modified)
EN ISO 2719, Determination of flash point — Pensky-Martens closed cup method (ISO 2719:2002)
EN ISO 3104, Petroleum products — Transparent and opaque liquids — Determination of kinematic viscosity
and calculation of dynamic viscosity (ISO 3104:1994)
EN ISO 7346-1, Water quality — Determination of the acute lethal toxicity of substances to a freshwater fish
[Brachydanio rerio Hamilton-Buchanan (Teleostei, Cyprinidae)] — Part 1: Static method (ISO 7346-1:1996)
EN ISO 7346-2, Water quality — Determination of the acute lethal toxicity of substances to a freshwater fish
[Brachydanio rerio Hamilton-Buchanan (Teleostei, Cyprinidae)] — Part 2: Semi-static method
(ISO 7346-2:1996)
EN ISO 7346-3, Water quality — Determination of the acute lethal toxicity of substances to a freshwater fish
[Brachydanio rerio Hamilton-Buchanan (Teleostei, Cyprinidae)] — Part 3: Flow-through method
(ISO 7346-3:1996)
EN ISO 9888, Water quality — Evaluation of ultimate aerobic biodegradability of organic compounds in
aqueous medium — Static test (Zahn-Wellens method) (ISO 9888:1999)
EN ISO 12185, Crude petroleum and petroleum products — Determination of density — Oscillating U-tube
method (ISO 12185:1996)
ISO 431, Copper refinery shapes
ISO 3013, Petroleum products — Determination of the freezing point of aviation fuels
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 13160–1:2003 apply.
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4 General
General principles according to EN 13160–1.
Additionally the type of leak detection liquid shall be given.
Where the requirement is for low temperature performance the alternative test temperature is shown in
brackets [.].
5 Interstitial space
General requirements concerning the interstitial space according to EN 13160-7.
The interstitial space shall be constructed such that the entire volume can be filled with the leak detection li-
quid and it shall be liquid tight.
The walls of the interstitial space shall withstand the pressure due to the head of liquid in the system.
For a tank the system shall be designed so that there are no connections to the inner tank through the
interstitial space below the maximum filling level.
Access into the interstitial space of tanks shall only be allowed through the outer skin above the maximum
filling level.
6 Leak detector for liquid systems
6.1 Leak detector liquid tanks
The leak detector liquid tanks - being expansion tanks - shall have a useable volume of:
 at least 1 l/100 l of leak detector liquid in the interstitial space of tanks with at least 0,3 m earth cover;
 at least 1 l/35 l of leak detector liquid in the interstitial space for all other tanks.
NOTE A leak detector liquid tank having a useable volume of less than 1 l/35 l of total liquid volume should not be
used with tanks buried to a depth of less than 0,3 m earth cover due to the risk of variations in ground temperature
causing excessive variations in the volume of leak detection liquid.
The useable volume is considered to be 50 % of the volume between the liquid level existing just before the
visual or audible alarm is issued and the top edge of the liquid tank or the air vent (if the latter is located at a
lower level).
A leak detector liquid tank shall not be connected to more than one storage tank.
Several leak detector liquid tanks may be connected in series at the same height, to achieve the required
useable volume of the leak detection liquid.
Pipe unions for the interconnecting lines to the interstitial space shall have an internal diameter of 13 mm
minimum. They shall be located at the lowest point of the leak detector liquid tank and be designed and
secured such that ≥ 14 mm outer diameter interconnecting lines cannot be introduced into the leak detector
liquid tank.
Leak detector liquid tanks shall have a minimum 25 mm internal diameter sealable charging hole.
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2
Leak detector liquid tanks shall have a vent hole of minimum 20 mm open cross-section. The latter shall be
arranged and/or protected such that no clogging by deposits of dirt need be expected. Installation of the vent
hole in the charging hole cap is disallowed.
Leak detector liquid tanks shall be equipped with suitable mounting fixures.
A facility for checking the tank level (inspection window or level plug) shall be provided. The latter shall divide
the volume between the liquid level at alarm indication and the top edge of the leak detector liquid tank and/or
the vent hole in two.
Leak detector liquid tanks that are simultaneously intended as a visual indicator shall be adequately trans-
parent or be equipped with a level indicator.
The leak detector liquid tanks shall be positioned so that the hydrostatic pressure of the leak detection liquid at
the lowest point of the tank is at least 3 kPa higher than both the maximum pressure of stored product at the
lowest point of the tank (including any operating pressure) and the maximum pressure of the groundwater at
the lowest point of the tank.
The leak detector liquid tank shall be positioned so that the pressure in the interstitial space shall not exceed
the rated pressure of the interstitial space.
For leak detector liquid tanks installed in a potentially explosive atmosphere the electrical surface resistance
9 2
shall be less than 1 × 10 Ω, if the greatest projected surface is > 100 cm . For further information see 7.4 of
EN 13463-1:2001.
The pipe connection shall be designed so that it is not possible for the interconnecting pipe to protrude above
the lower inside surface of the leak detector liquid tank.
6.2 Leak detection liquids
The manufacturer shall specify which leak detection liquids are suitable for the leak detection system. Leak
detection liquids shall have the following properties:
-1
 electrical conductivity greater than 500 µS/cm ;
2 -1
 viscosity at - 20 °C [- 40 °C] not greater than 100 mm s and a freezing point below - 20 °C [- 40 °C];
 flash point not below + 80 °C;
-4 -1
 coefficient of thermal expansion not exceeding 5 × 10 K at a temperature of + 20 °C;
 no segregation in accordance with the test method in 7.4.8;
 fungicidal properties;
 no harmful effects to groundwater in accordance with the test method in 7.4.10;
 no deleterious effects on the materials with which they may be expected to come into contact.
 no reaction with the stored product which causes an exothermic reaction, volumetric expansion, the
generation of vapour or formation of colloided or solid deposition;
 no catalytic reaction between a mixture of the stored product and the leak detection liquid which causes
an exothermic reaction, volumetric expansion or the generation of vapour;
 maintain their properties during the life time of the system.
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If the leak detection liquid is topped up or replaced all the required criteria shall be satisfied by any resulting
mixture.
6.3 Liquid sensors
In the event of a sensor disconnection an alarm condition shall result.
The liquid sensor in the leak detector liquid tank shall be situated so that an alarm condition occurs when the
liquid level in the leak detector liquid tank drops by a volume greater than 15 % of the volume of the interstitial
space or by 30 l which ever is the lower volume.
6.4 Connection lines between leak detectors liquid tanks and interstitial space
The connection lines between leak detector liquid tank and interstitial space installed in potentially explosive
9
atmosphere of zone 1 shall have an electrical surface resistance less than 1 × 10 Ω. This requirement
concerning conductive connection lines becomes no longer necessary if
 the outer diameter of the connection lines is ≤ 30 mm for potentially explosive atmospheres of group II A
and II B according to EN 60079-0
or
 the outer diameter of the connection lines is ≤ 20 mm for potentially explosive atmospheres of group II C
according to EN 60079-0
or
 the wall thickness of the connection lines is < 2 mm for potentially explosive atmospheres of group II A
and II B according to EN 60079-0 by using conductive leak detection liquid
or
 the wall thickness of the connection lines is < 0,2 mm for potentially explosive atmospheres of group II C
according to EN 60079-0 by using conductive leak detection liquid.
The flow rate from the outlet of the installed system shall be > 0,5 l/min.
As far as possible the inlet and outlet shall be positioned at the extremities of the system to ensure adequate
flow of the leak detection liquid.
For further information see 7.4 of EN 13463-1:2001.
7 Type test
7.1 Test of components
The requirements according to clause 6 shall be tested by a comparison of a prototype of a leak detector for
liquid systems with the constructional drawing.
7.2 Test equipment
 A test vessel in the form of a flat bottomed vertical cylinder, having a horizontal cross-sectional area of
2
(0,1 ± 0,002) m (i.e. a liquid depth of 0,01 m corresponds to a volume of 1 l) and a minimum depth of
0,3 m;
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 environmental chamber the temperature of which can be varied over the range from - 25 °C to + 70 °C
within an accuracy of 2 K;
 for the test in a temperature range from – 40 °C to + 40 °C an environmental chamber the temperature of
which can be varied over the range from – 50 °C t o + 40 °C with an accuracy of 2 K;
 cycle counter;
 a clock having a time indication in steps of 1 s to a total of 24 h, within an accuracy of 5 s.
7.3 Function test
7.3.1 Test objective
The test objective is to verify the suitability of the sensor for detecting a fall in liquid level in the leak detection
liquid tank.
7.3.2 Preparation
The sensor shall be installed in the test vessel for the function test in such a way that it can be immersed
either by changing the level of leak detection liquid or by raising and lowering of the sensor.
All equipment shall be installed in an environmental chamber for the function test. The sensor under test shall
be connected to the leak indicating device.
7.3.3 Evaluation
The test shall be deemed to have been passed if the leak detector triggers an optical and audible alarm within
5 s after the leak detection liquid is no longer in contact with the sensor. The device shall function correctly
throughout the test.
7.3.4 Test method for the durability
The leak detector shall be tested in a durability test at a temperature of (20 ± 5) °C. An adequate durability is
4
confirmed when the device continues to function correctly after 1 × 10 test cycles. The sensor shall be
immersed and emerged once per test cycle in the liquid and the alarm shall operate in every case.
7.3.5 Test method for the reliability test
The reliability test of the alarm transmitter and the sensors, which are intended for installation in open air, shall
be carried out considering 6.1 as follows:
 at a temperature of (20 ± 5) °C over a period of 200 h;
 at a temperature range of - 25 °C to + 25 °C [- 40 °C to + 40 °C] over a period of 120 h. The starting
temperature for this test is - 25 °C [- 40 °C]. The temperature profile shall be according to Figure 1 with an
accuracy of 2 K for the temperature and 15 min for the time. The cycle shall be repeated every 24 h.
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Key
a Temperature
b Time
c One cycle
Figure 1 — Temperature profile between - 25 °°C to + 25 °°C
°° °°
 at a temperature range of + 70 °C to + 25 °C over a period of 120 h. The starting temperature for this test
is + 70 °C. The temperature profile shall be according to Figure 2 with an accuracy of 2 K for the
temperature and 15 min for the time. The cycle shall be repeated every 24 h.

Key
a Temperature
b Time
c One cycle
Figure 2 — Temperature profile between +70 °°°°C to +25 °°°°C
During the total test time a leak shall be simulated at time intervals of approximately 5 min by removing the
leak detection liquid from contact with the sensor until the alarm operates.
The reliability test of the alarm transmitter and the sensors, which are intended for installation in frost
protected area shall be carried out as described above but with a temperature range of – 5 °C to + 50 °C.
The time to alarm shall be measured and recorded at least once during the stable period at each maximum
and minimum temperature.
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7.4 Type test of leak detection liquids for use in class II leak detection systems
7.4.1 Test objective
The aim of the test is to verify the suitability of a liquid as a leak detection medium in the interstitial space of a
double-walled tank. Tests shall be performed to determine the properties as defined in 6.2.
A liquid shall be qualified for use with each type of metallic and non-metallic material and each type of stored
product with which it can be expected to come into contact during normal use.
7.4.2 Evaluation
The tests shall be deemed to have been passed where all properties as defined in 6.2 are found to be within
the required ranges.
7.4.3 Test equipment
 A strainer of 0,2 mm inside mesh width 0,125 mm diameter and 0,325 mm mesh clearance;
 suitable samples of each metallic material for qualification;
 suitable samples of each stored product for qualification;
 suitable quantities of test medium A (mineral salt solution without assimilatable source of carbon) - see
Table A.1 for composition;
 suitable quantities of test medium B (sabouraud medium) - see Table A.2 for composition;
 a graduated conical separating funnel with a nominal volume of 1 l;
 20 l of undiluted leak detection liquid supplied by the manufacturer, with details of the ratio for dilution with
water (if appropriate).
7.4.4 Determination of the freezing point and of the viscosity
The freezing point of the leak detection liquid shall be determined in accordance with ISO 3013. The viscosity
of the leak detection liquid shall be determined at - 20 °C [- 40 °C] according to EN ISO 3104.
7.4.5 Determination of the coefficient of thermal expansion
The coefficient of thermal expansion of the leak detection liquid shall be determined according to EN
ISO 12185.
7.4.6 Determination of the flash point
The flash point of the leak detection liquid shall be determined according to EN ISO 2719.
7.4.7 Determination of the fungicidal properties
Two different media, A and B, shall be used for microbiological examination in a liquid culture. The test in
medium A reveals whether the liquid under test contains nutrients which the test fungi can utilise. Medium B
constitutes a full medium for the test fungi and serves to analyze the fungitoxic properties of the liquid under
test.
Test method and test results according to annex A.
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7.4.8 Determination of the segregation
1 l of the liquid under test, diluted with water according to the ratio specified by the manufacturer, shall be
brought into contact with the materials relevant to testing its tendency to demix and precipitate deposits.
The test liquid shall be stored at ambient temperature (20 ± 5) °C for 56 days in the graduated conical
separating funnel with a tap at the bottom.
The liquid shall be inspected for demixing and deposition.
The volume of the deposit shall be measured at the graduation at the lowest level of the conical separating
funnel, see Figure 3.
After opening the tap of the separating funnel the deposit shall be tested whether it will pass completely
through the strainer.
3
If the deposit volume is gre
...