SIST EN 13160-7:2016+A1:2025

SLOVENSKI STANDARD
01-januar-2025
Nadomešča:
SIST EN 13160-7:2016
Sistemi za kontrolo tesnosti - 7. del: Zahteve in metode za preskušanje in
ocenjevanje vmesnih prostorov, zunanjih oblog in plaščev za zaznavanje
netesnosti (vključno z dopolnilom A1)
Leak detection systems - Part 7: Requirements and test/assessment methods for
interstitial spaces, leak detection linings and leak detection jackets
Leckanzeigesysteme - Teil 7: Anforderungen und Prüf-/Bewertungsverfahren für
Überwachungsräume, Leckschutzauskleidungen und Leckschutzummantelungen
Systèmes de détection de fuites - Partie 7: Exigences et méthodes d'essai/d'évaluation
pour les espaces interstitiels, les détecteurs de fuite des revêtements et les détecteurs
de fuite d'enveloppes
Ta slovenski standard je istoveten z: EN 13160-7:2016+A1:2024
ICS:
23.020.01 Vsebniki za shranjevanje Fluid storage devices in
tekočin na splošno general
23.040.99 Drugi sestavni deli za Other pipeline components
cevovode
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13160-7:2016+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 23.020.01; 23.040.99; 29.260.20 Supersedes EN 13160-7:2016
English Version
Leak detection systems - Part 7: Requirements and
test/assessment methods for interstitial spaces, leak
detection linings and leak detection jackets
Systèmes de détection de fuites - Partie 7: Exigences et Leckanzeigesysteme - Teil 7: Anforderungen und Prüf-
méthodes d'essai/d'évaluation pour les espaces /Bewertungsverfahren für Überwachungsräume,
interstitiels, les détecteurs de fuite des revêtements et Leckschutzauskleidungen und
les détecteurs de fuite d'enveloppes Leckschutzummantelungen
This European Standard was approved by CEN on 8 April 2016 and includes Amendment 1 approved by CEN on 11 September
2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13160-7:2016+A1:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Requirements . 6
4.1 Effectiveness of leak detection lining kits and leak detection jacket kits . 6
4.1.1 Tightness against liquid and vapour. 6
4.1.2 Permeability of leak detection linings and leak detection jackets . 6
4.1.3 Free passage of liquid in the interstitial space . 7
4.1.4 Free passage of air . 7
4.1.5 Flow resistance after impact of stored media . 7
4.1.6 Mechanical resistance against the imposed load by the stored medium . 7
4.1.7 Chemical resistance . 14
4.2 Durability of effectiveness . 14
4.2.1 Durability against temperature . 14
4.2.2 Durability against chemical attack . 15
4.2.3 Durability against mechanical load . 15
5 Testing, assessment and sampling methods . 15
5.1 Effectiveness of leak detection lining kits and leak detection jacket kits . 15
5.1.1 Tightness against liquid and gas . 15
5.1.2 Permeability . 16
5.1.3 Free passage of liquid in the interstitial space . 17
5.1.4 Free passage of air . 18
5.1.5 Flow resistance after impact of stored media . 21
5.1.6 Mechanical resistance against the imposed load by the stored medium . 24
5.1.7 Chemical resistance . 24
5.2 Durability of effectiveness . 24
5.2.1 Durability against temperature . 24
5.2.2 Durability against chemical attack . 24
5.2.3 Durability against mechanical load . 24
6 Assessment and verification of constancy of performance – AVCP . 26
6.1 General. 26
6.2 Type testing . 26
6.2.1 General. 26
6.2.2 Test samples, testing and compliance criteria . 27
6.2.3 Test reports . 28
6.2.4 Shared other party results . 28
6.2.5 Cascading determination of the product type results . 28
6.3 Factory production control (FPC) . 29
6.3.1 General. 29
6.3.2 Requirements . 30
6.3.3 Product specific requirements. 32
6.3.4 Procedure for modifications . 33
6.3.5 One-off products, pre-production products (e.g. prototypes) and products
produced in very low quantity . 33
7 Marking, labelling and packaging . 34
8 Environmental aspects . 34
Annex A (normative) Determination of the interstitial space volume for class I-systems . 35
A.1 Test equipment. 35
A.2 Preparation . 35
A.3 Procedure . 36
A.4 Evaluation. 38
Annex B (informative) Environmental aspects . 39

European foreword
This document (EN 13160-7:2016+A1:2024) has been prepared by Technical Committee CEN/TC 393
“Equipment for storage tanks and for filling stations”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2025, and conflicting national standards shall be
withdrawn at the latest by August 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document includes Amendment 1 approved by CEN on 11 September 2024.
This document supersedes !EN 13160-7:2016".
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
!deleted text"
According to edition 2003 the following fundamental changes are given:
— requirements and tests for permeation added;
— material properties revised;
— requirements from EN 13160-1:2003 included, which are no longer contained in
EN 13160-1:2016.
This European Standard Leak detection systems consists of 7 parts:
— Part 1: General principles
— Part 2: Requirements and test/assessment methods for pressure and vacuum systems
— Part 3: Requirements and test/assessment methods for liquid systems for tanks
— Part 4: Requirements and test/assessment methods for sensor based leak detection systems
— Part 5: Requirements and test/assessment methods for in-tank gauge systems and pressurized
pipework systems
— Part 6: Sensors in monitoring wells
— Part 7: Requirements and test/assessment methods for interstitial spaces, leak detection linings and
leak detection jackets
Any feedback and questions on this document should be directed to the users’ national standards
body. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye
and the United Kingdom.
1 Scope
This European Standard gives requirements and the corresponding test/assessment methods
applicable to leak detection lining kits and leak detection jacket kits. Leak detection lining kits and leak
detection jackets kits intended to be used to create an interstitial space or leakage containment in
single skin underground or above ground, non-pressurized, tanks designed for water polluting liquids.
The kit has to be used only in conjunction with leak detection kits covered by EN 13160-2 to
EN 13160-4.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
EN 228, Automotive fuels — Unleaded petrol — Requirements and test methods
EN 495–5, Flexible sheets for waterproofing — Determination of foldability at low temperature — Part
5: Plastic and rubber sheets for roof waterproofing
EN 1107-2, Flexible sheets for waterproofing — Determination of dimensional stability — Part 2: Plastic
and rubber sheets for roof waterproofing
EN 1849-2, Flexible sheets for waterproofing — Determination of thickness and mass per unit area —
Part 2: Plastic and rubber sheets
EN 10300:2005, Steel tubes and fittings for onshore and offshore pipelines — Bituminous hot applied
materials for external coating
EN 13121-1, GRP tanks and vessels for use above ground — Part 1: Raw materials — Specification
conditions and acceptance conditions
EN 13121-2:2003, GRP tanks and vessels for use above ground — Part 2: Composite materials —
Chemical resistance
EN 13160-1:2016, Leak detection systems — Part 1: General principles
!EN 13160-2:2016+A1:2024", Leak detection systems — Part 2: Requirements and test/assessment
methods for pressure and vacuum systems
!EN 13160-3", Leak detection systems — Part 3: Requirements and test/assessment methods for
liquid systems for tanks
!EN 13160-4", Leak detection systems — Part 4: Requirements and test/assessment methods for
sensor based leak detection systems
EN 14879-4:2007, Organic coating systems and linings for protection of industrial apparatus and plants
against corrosion caused by aggressive media — Part 4: Linings on metallic components
EN ISO 62, Plastics — Determination of water absorption (ISO 62)
EN ISO 75-1, Plastics — Determination of temperature of deflection under load — Part 1: General test
method (ISO 75-1)
EN ISO 75-2, Plastics — Determination of temperature of deflection under load — Part 2: Plastics and
ebonite (ISO 75-2)
EN ISO 75-3, Plastics — Determination of temperature of deflection under load — Part 3: High-strength
thermosetting laminates and long-fibre-reinforced plastics (ISO 75-3)
EN ISO 175, Plastics — Methods of test for the determination of the effects of immersion in liquid
chemicals (ISO 175)
EN ISO 178, Plastics — Determination of flexural properties (ISO 178)
EN ISO 179-1, Plastics — Determination of Charpy impact properties — Part 1: Non-instrumented
impact test (ISO 179-1)
EN ISO 179-2, Plastics — Determination of Charpy impact properties — Part 2: Instrumented impact test
(ISO 179-2)
EN ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles (ISO 527-1)
EN ISO 527-3, Plastics — Determination of tensile properties — Part 3: Test conditions for films and
sheets (ISO 527-3)
EN ISO 604, Plastics — Determination of compressive properties (ISO 604)
EN ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1:
Immersion method, liquid pyknometer method and titration method (ISO 1183-1)
EN ISO 24345, Resilient floor coverings — Determination of peel resistance (ISO 24345)
ISO 2528, Sheet materials — Determination of water vapour transmission rate — Gravimetric (dish)
method
ISO 6133, Rubber and plastics — Analysis of multi-peak traces obtained in determinations of tear
strength and adhesion strength
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 13160-1:2016 apply.
4 Requirements
4.1 Effectiveness of leak detection lining kits and leak detection jacket kits
4.1.1 Tightness against liquid and vapour
The integrity of the leak detection linings and leak detection jackets shall be maintained under all
operating pressures.
4.1.2 Permeability of leak detection linings and leak detection jackets
The permeation shall be according to Table 1 and Table 2.
No condensation of vapour of the stored product in the interstitial space should occur.
Table 1 — Permeation of leak detection linings
Property Required value
Passage of stored products at installation of the leak protecting lining in max 100 g/m ⋅ day
metal tanks with a passage of stored product of 0 g/m ⋅ d
Passage of stored products at installation of the leak protecting lining in max 0,1 g/m ⋅ day
tanks with a passage of stored product > 0 g/m ⋅ d

Passage of deionized water max 4 g/m ⋅ day
NOTE By permeation rates > 0 g/m ⋅ d the exhaust line of the leak detector should be connected
to the vapour space of the stored tank.
Table 2 — Permeation of leak detection jackets
Property Required value
Passage of stored product
max 2 g/m ⋅ day
Passage of deionized water max 4 g/m ⋅ day
4.1.3 Free passage of liquid in the interstitial space
The quantity of liquid, calculated according to !EN 13160-2:2016+A1:2024", Formula (4) and the
specific volume V according to Annex A shall enter the interstitial space by a vacuum change from
sp
(60 ± 5) kPa (p ) to (30 ± 5) kPa (p ).
PA PE
Additional for leak detection systems class II according to EN 13160-3 the flow rate at the test nozzles
shall be > 0,5 l/min.
4.1.4 Free passage of air
4.1.4.1 Free passage of air through intermediate layer
The back pressure of the intermediate layer shall not be higher than 1 kPa at a volume flow of
(85 ± 5) l/h of air.
4.1.4.2 Free passage of air through double skin tanks and pipes
An opening of the interstitial space shall result in a pressure change in the interstitial space.
4.1.5 Flow resistance after impact of stored media
The flow resistance shall not exceed the value of 1 kPa at an air volume flow of (85 ± 5) l/h.
4.1.6 Mechanical resistance against the imposed load by the stored medium
4.1.6.1 Influence of the mechanical resistance to the free passage in the interstitial space
The flow resistance of the intermediate layer shall not be higher than 1 kPa at a volume flow of
(85 ± 5) l/h of air under load.
4.1.6.2 Mechanical properties
Mechanical properties for polyvinylchloride (PVC) shall be according to Table 3.
Table 3 — Mechanical properties for polyvinylchloride (PVC)
No. Property Test method Dimension Required value
1 Tensile strength, EN ISO 527-1 and N/mm ≥ 15
EN ISO 527-3;
Lengthwise and across
Test speed:
200 mm/min ± 10 %
Specimen: Type 2
2 Tensile elongation, EN ISO 527-1 and
% > 200
EN ISO 527-3;
Lengthwise and across
Test speed:
200 mm/min ± 10 %
Specimen: Type 2
3 Reaction of joint to shear EN ISO 527-1 and — Off-joint
test EN ISO 527-3; fracture,
Test speed: joint
200 mm/min ± 10 % Specimen: factor ≥ 0,65
Type 2
4 Adhesion of multilayered In conformity with N/mm ≥ 2,0
sheet material EN ISO 24345, ISO 6133,
EN ISO 527-1 and
EN ISO 527-3;
Test speed:
100 mm/min ± 10 %
Specimen: Type 2
5 Variation in dimension in EN 1107-2; in a hot cabinet 2 h % ≤ 2,0
either direction after in air of (80 ± 2) °C and then
storage at 80 °C 30 min at normal climate on a
cover, which shall not affect the
dimensions
6 Reaction in either direction EN 495-5 — No fissures may
to folding at a temperature occur on either
of −20 °C top or bottom
surface
7 Thickness EN 1849-2 % Middle
deviation ± 10
Deviation of
single value ≤ 12
8 Density EN ISO 1183-1 % Middle
deviation ± 2
Effects of test media for polyvinylchloride (PVC) shall be according to Table 4.
Table 4 — Effects of test media for polyvinylchloride (PVC)
Property Test method Dimension Required value
Change of mass after storage in In conformity with EN ISO 62 at ≤ 15
deionized water and stored normal climate, change shall be
%
product or test liquids according determined after the following
to Annex C of EN 14879-4:2007 storage periods: 3, 14 and 56 d
Change of tensile strength and EN ISO 527-1 and EN ISO 527-3 ≤ 25
elongation, in either direction after
for tensile
Test speed:
storage in deionized water and
200 mm/min ± 10 % Specimen: elongation the
%
stored product (56 d at 23 °C) or
Type 2 measured value as
test liquids according to Annex C
per Table 3
of EN 14879-4:2007
Change of tensile strength and EN ISO 527-1 and EN ISO 527-3 ≤ 25
elongation, in either direction after
Test speed:
storage in of folded materials in
200 mm/min ± 10 % Specimen:
deionized water and stored
Type 2
%
product
(56 d at 23 °C) or test liquids
according to Annex C of EN 14879-
4:2007
Change of reaction of the joint to EN ISO 527-1 and EN ISO 527-3 Off-joint fracture
shear test after storage in
Test speed:
deionized water and stored
200 mm/min ± 10 % Specimen:
—
product (56 d at 23 °C) or test
Type 2
liquids according to Annex C of
EN 14879-4:2007
Mechanical properties for thermoplastic and thermoplastic elastomers except polyvinylchloride (PVC)
shall be according to Table 5.
Table 5 — Mechanical properties for thermoplastic and thermoplastic elastomers except
polyvinylchloride (PVC)
No. Property Test method Dimension Required value
1 Tensile strength, EN ISO 527-1 and EN ISO 527-3; N/mm ≥ 15
Lengthwise and across Test speed: 200 mm/min ± 10 %
Specimen: Type 2
2 Tensile elongation, EN ISO 527-1 and EN ISO 527-3; % > 200
Lengthwise and across Test speed: 200 mm/min ± 10 %
Specimen: Type 2
3 Reaction of joint to EN ISO 527-1 and EN ISO 527-3; — Off-joint
shear test fracture,
Test speed: 200 mm/min ± 10 %
Specimen: Type 2 joint factor ≥ 0,5
4 Adhesion of In conformity with EN ISO 24345,
N/mm ≥ 1,0
multilayered sheet ISO 6133, EN ISO 527-1 and
material EN ISO 527-3;
Test speed: 100 mm/min ± 10 %
Specimen: Type 2
5 Variation in dimension EN 1107-2; in a hot cabinet 2 h in air % ≤ 10
in either direction after of (80 ± 2) °C and then 30 min at
storage at 80 °C normal climate on a cover, which
shall not affect the dimensions
6 Reaction in either EN 495-5 — No fissures may
direction to folding at a occur on either
temperature of −20 °C top or bottom
surface
7 thickness EN 1849-2 % Middle
deviation ± 10
8 density EN ISO 1183-1 % Middle
deviation ± 10 %
Effects of test media for thermoplastic and thermoplastic elastomers except polyvinylchloride (PVC)
shall be according to Table 6.
Table 6 — Effects of test media for thermoplastic and thermoplastic elastomers except
polyvinylchloride (PVC)
Property Test method Dimension Required
value
Change of mass after storage in In conformity with EN ISO 62 at ≤ 20
deionized water and stored normal climate, change shall be
product or test liquids determined after the following %
according to Annex C of storage periods: 3 d, 14 d and
EN 14879-4:2007 56 d
Change of tensile strength and EN ISO 527-1 and EN ISO 527-3 ≤ 50
elongation, in either direction
Test speed: 200 mm/min ± 10 %
after storage in deionized water
Specimen: Type 2
%
and stored product (56 d at
23 °C) or test liquids according
to Annex C of EN 14879-4:2007
Change of tensile strength and EN ISO 527-1 and EN ISO 527-3 ≤ 60
elongation, in either direction for tensile
Test speed: 200 mm/min ± 10 %
after storage in of folded elongation the
Specimen: Type 2
materials in deionized water measured
%
and stored product value as per
(56 d at 23 °C) or test liquids Table 5
according to Annex C of
EN 14879-4:2007
Change of reaction of the joint EN ISO 527-1 and EN ISO 527-3 Off-joint
to shear test after storage in fracture
Test speed: 200 mm/min ± 10 %
deionized water and stored
Specimen: Type 2
—
product (56 d at 23 °C) or test
liquids according to Annex C of
EN 14879-4:2007
Requirements for inner layer of leak detection linings and outer layer of leak detection jackets with
epoxide resin (EP) or unsaturated polyester resin (UP) moulding materials shall be according to
Table 7. The inner layer by leak detection linings/outer layer by leak detection jacket of original height
without spacer shall be used for testing.
Table 7 — Requirements for inner layer of leak detection linings and outer layer of leak
detection jackets with epoxide resin (EP) or unsaturated polyester resin (UP) moulding
materials
Property Dimensio Test method Sample Mean
n value of
dimension number
property
mm
Flexural strength MPa EN ISO 178 EN ISO 178 5 ≥ 80
Impact strength kJ/m EN ISO 179-1 and EN ISO 179-1 5 ≥ 5
EN ISO 179-2
Dimensional stability under °C EN ISO 75-1 EN ISO 75-2 3 ≥ 50
heat
EN ISO 75-2 EN ISO 75-3
EN ISO 75-3
Change in weight after %
28 days storage
— distilled water at
EN ISO 175 EN ISO 175 3 +4
(20 ± 5) °C
−2
The sample shall Cut surfaces 3
— stored product at
be wiped dry and shall be
(20 ± 5) °C or test
weighed sealed.
liquids according to
immediately after
Annex C of EN 14879–
the storage.
4:2007
Change of flexural strength %
after 28 days storage
— distilled water at
EN ISO 178 EN ISO 178 5 ≤ −30
(20 ± 5) °C
Cut surfaces
— stored product at
shall be
(20 ± 5) °C or test
sealed.
liquids according to
Annex C of EN 14879–
4:2007
The mean values of the flexural strength and of the impact strength shall fulfil the requirements of
Table 7. The single value of the flexural strength may be up to 15 % and the single value of the impact
strength may be up to 30 % under the values of Table 7. The single value of the other properties shall
fulfil the requirements of Table 7.
Requirements for intermediate layer of resin and spacer of leak detection linings and of leak detection
jackets according to Figure 1 shall be according to Table 8.
Table 8 — Requirements for intermediate layer of resin and spacer of leak detection linings
and of leak detection jackets
sample
Test
Property Dimension Values of property
dimension numbe
method
mm r
Compression strength at length and ≥ 1,0 (no break)
condition at time of supply width according
for tanks with a
to EN ISO 604
height or diameter
height: sampling of ≤ 3 m
2 height
N/mm EN ISO 604 5 ≥ 3,0 (no break)
for tanks with a
height or diameter
of > 3 m
Change of compression ≥ 0,6 (no break)
length and
strength after 112 days
for tanks with a
width according
storage at ambient
height or diameter
to EN ISO 604
temperature in water and
of ≤ 3 m
% EN ISO 604 height: sampling 5
stored product or test
≥ 1,8 (no break)
height
liquids according to
for tanks with a
Annex C of EN 14879–
Cut surfaces
height or diameter
4:2007
shall be sealed.
of > 3 m
The construction of leak detection linings and leak detection jackets can be according to Figure 1.
a)
b)
c)
NOTE Before installation of the leak detection lining/leak detection jacket the tank wall may be coated
according to EN 14879-4.
Key
1 inner layer by leak detection linings/outer layer by leak detection jackets
2 intermediate layer
3 tank wall
4 inner layer by leak detection linings/ outer layer by leak detection jackets combined with spacer
5 inner layer by leak detection linings/outer layer by leak detection jacket combined with spacer,
fixed to the tank wall
Figure 1 — Construction of leak detection linings and leak detection jackets
4.1.7 Chemical resistance
4.1.7.1 Inner layer and outer layer in contact with the stored liquid
The components of the thermoplastic and thermoplastic elastomers leak detection lining kits
according to Table 4 and Table 6.
The components of the UP and EP leak detection lining kits or leak detection jacket kits according to
EN 13121-1 and 5.2, 5.5 and 5.6 of EN 13121-2:2003.
4.1.7.2 Intermediate layer and spacer of leak detection linings or of leak detection jackets in
contact with the stored liquid
After the test according to 5.1.5 the flow resistance shall not exceed the value of 1 kPa at an air volume
flow of (85 ± 5) l/h.
4.2 Durability of effectiveness
4.2.1 Durability against temperature
For thermoplastic and thermoplastic elastomers leak detection linings according to Table 3 and
Table 5.
For intermediate layer according to 5.1.4.2.
For UP and EP leak detection linings or leak detection jackets according to Table 7.
4.2.2 Durability against chemical attack
The thermoplastic and thermoplastic elastomers leak detection linings according to Table 4 and
Table 6.
The UP and EP leak detection linings or leak detection jackets according to Table 7 and intermediate
layer and spacer of leak detection linings and of leak detection jackets according to Table 8.
4.2.3 Durability against mechanical load
4.2.3.1 Leak detection lining kits
The components of the thermoplastic and thermoplastic elastomers leak detection lining kits
according to Table 3 to Table 6.
The components of the UP and EP leak detection lining kits shall fulfil the requirements according to
EN 13121-1.
4.2.3.2 Leak detection jacket kits
There shall be no damage indicated by a crack, de-bonding or delamination after the test according to
5.2.3.2.
5 Testing, assessment and sampling methods
5.1 Effectiveness of leak detection lining kits and leak detection jacket kits
5.1.1 Tightness against liquid and gas
5.1.1.1 Test equipment
— vacuum pump with constant volume flow of 85 l/h;
— pressure pump;
— measuring device for pressure accuracy 0,6 % of the maximum graduated value;
— water;
— bucket with scale.
5.1.1.2 Preparation
The test tank shall be equipped with 3 test nozzles, which shall be distributed over the tank
circumference.
The test pipework shall have a length of minimum 10 m and shall be equipped with four test nozzles.
One particular test nozzle shall be installed at every end of the test pipe and the third and fourth shall
be installed at a distance of 2,5 m apart to the nozzles already available.
5.1.1.3 Procedure
The test shall be carried out at a temperature above the freezing point of water but not exceeding
+40 °C.
The tightness and the strength of the interstitial space shall be proved by a pressure test on a sample
of a tank or pipework at ambient pressure in the tank or pipework.
The difference of the ambient temperature shall be within a range of 1 K at the beginning and at the
end of the test.
The following minimum test pressures (p ) shall be used:
t2
— for interstitial spaces, which are part of a leak detection system working on the basis of leak
detection liquid or pressure at 1,1 times of the set pressure of the pressure relief valve, but at least
at 60 kPa (0,6 bar) pressure;
— for the interstitial spaces, which are part of a leak detection system working on the basis of
vacuum at 1,1 times of the negative working pressure of the leak detector and at 1,1 times of the
operating pressure of the pipework or the tank at pressurization of the pipework or tank at the
same time.
5.1.1.4 Evaluation
The test shall be deemed to have been passed if the condition in Formula (1) is fulfilled:
(p −p )⋅V
B E 1
−1
10≥ in Pa l s (1)
t
where
p is the pressure at the beginning of the test, in Pascal
B
p is the pressure at the end of the test, in Pascal
E
t is the test time, in seconds
V is the volume of the interstitial space according to Annex A in litres
5.1.2 Permeability
5.1.2.1 Test equipment
— Stored product or the following test liquids:
a) For unleaded petrol: According to EN 228
1) with maximum 5 % (V/V) ethanol
47,5 % (V/V) toluene,
30,4 % (V/V) isooctane (2,2,4-trimethylpentane)
17,1 % (V/V) n-heptane
3,0 % (V/V) methanol
2,0 % (V/V) butanol
2) with > 5 % (V/V) and ≤ 20 % (V/V) ethanol
20 % (V/V) ethanol
37,7 % (V/V) toluene
24,2 % (V/V) isooctane (2,2,4- trimethylpentane)
13,5 % (V/V) n-heptane
3 % (V/V) methanol
1,6 % (V/V) butanol
The tolerance for the component of the test liquid shall be 0,1 %.
b) for other products: according to Annex C of EN 14879-4:2007.
— Scale, accuracy of minimum ± 0,1 g.
— Length measuring device, accuracy of minimum ± 1 mm.
— Volume measuring device, accuracy of minimum ± 1 ml.
5.1.2.2 Preparation
The dimension of the test sample (e.g. piece of pipe or bag of lining material) shall be measured and
recorded. A test sample in form of closed volume with a minimum inner surface of 0,12 m shall be
used. The volume of the test sample shall be filled with (1,0 ± 0,1) l of test liquid and shall be weighted.
The end-closures used for the permeation test will need to be fitted with FKM or rubber, seals. The
seal shall be resistant against the test liquid. The test liquid shall be specially selected for their volatile
nature, so that multiple seals may be required to ensure that loss through the end-closures is
negligible.
The closure of the test samples may be grouted.
5.1.2.3 Procedure
Store the samples in air at (23 ± 2) °C using the scale.
In conformity with ISO 2528 at normal climate, passage shall be determined after the following
storage periods: 1, 3, 7, 14 and 56 d.
-1
Determine the rate of mass loss of the 'steady-state’ period (gradient of the regression line) in g ⋅ d .
Calculate the surface area A, where A = π⋅L ⋅ D, in m . Divide the rate of mass loss by A to give the
-2 -1
⋅ d for each specimen.
permeation rate in g ⋅ m
5.1.2.4 Evaluation
The test shall be deemed to have been passed, if the arithmetic average value over 56 d does not
exceed the values according to Table 1.
Each value measured at the different days shall fulfil the requirements of Table 1 and Table 2.
5.1.3 Free passage of liquid in the interstitial space
5.1.3.1 Test equipment
— vacuum pump with constant volume flow of 85 l/h;
— measuring device for pressure accuracy 0,6 % of the maximum graduated value;
— water;
— bucket with scale.
5.1.3.2 Preparation
For the test the vacuum pump shall be connected to the actual interstitial space of the representative
test tank or test pipe.
The test tank shall be equipped with three test nozzles, which shall be distributed over the tank
circumference.
The test pipework shall have a length of minimum 10 m and shall be equipped with four test nozzles.
One particular test nozzle shall be installed at every end of the test pipe and the third and fourth shall
be installed at a distance of 2,5 m apart to the nozzles already available.
A representative sample of the interstitial space of at least 1600 mm × 900 mm shall be used. The test
sample shall include any seams/welds and intermediate layer and shall have at least two test nozzles
at a distance of 1500 mm apart.
5.1.3.3 Procedure
5.1.3.3.1 Admission of water
The determination of the interstitial space volume for class I-systems shall be done according to
Annex A.
The test shall be carried out at a temperature above the freezing point of water.
In the interstitial space a vacuum of (60 ± 5) kPa shall be generated by the vacuum pump. The
measuring device for pressure shall be connected to the test sample at the highest test nozzle.
The admission of water shall be made through the test nozzle, situated at the lowest point of the test
sample, until a vacuum of (30 ± 5) kPa are reached.
The volume of water, sucked into the interstitial space, shall be measured.
5.1.3.3.2 Flow rate
Only for leak detection systems class II the flow rate of water at the outlet at the lowest point shall be
measured.
The test nozzle at the lowest point shall be opened and the water shall be collected over a time.
5.1.3.4 Evaluation
These values shall be identically with the calculated values according to 4.1.3 with a deviation ± 10 %.
5.1.4 Free passage of air
5.1.4.1 Free passage of air through intermediate layer
5.1.4.1.1 Test equipment
— Thickness tester, with an accuracy of 0,01 mm;
— two quadratic steel retaining plates 100 mm × 100 mm, thickness 10 mm;
— two quadratic steel pressure plates 150 mm × 150 mm, thickness 10 mm, with a hole of 10 mm
each in the corner sphere. One steel plate has a hole in the middle of the plate with a diameter of
6 mm and a fitting with a diameter of 6 mm is also welded on in the middle of the plate;
— four locking screws, 8 mm;
— compression device, with an accuracy of 1 %;
— air impermeable foil, e.g. PE 0,75 mm thickness;
— environmental chamber;
— vacuum pump with constant volume flow of 85 l/h;
— measuring device for pressure accuracy 0,6 % of the maximum graduated value;
— measuring device for the volume flow accuracy 0,6 % of the maximum graduated value.
5.1.4.1.2 Preparation
The tests shall be carried out at least at three quadratic test samples with the dimensions of
100 mm × 100 mm.
5.1.4.1.3 Procedure
The test shall be carried out at a temperature for installation in the open air at (60 ± 3) °C or by use in
frost protected area or underground tanks at (40 ± 3) °C.
NOTE The test at (60 ± 3) °C includes the test at (40 ± 3) °C.
For protecting the lining the intermediate layer shall be tested at 1,3 times the maximum possible
surface pressure (p ) according to Formula (2) – but a minimum of 50 kPa (0,5 bar).
MS
For protecting the jacket the intermediate layer shall be tested at a minimum of 1 MPa (10 bar).
Maximum possible surface pressure according to Formula (2):
p = ρ ⋅ g ⋅ h + p (2)
MS PA
First the initial thickness of the intermediate layers (s ) shall be measured with the thickness tester.
After the measurement the intermediate layers shall be laid between the two test plates. Through the
upper test plate the test samples shall be charged with the help of the compression device:
After reaching the steady-state condition but not before a minimum period of 14 days has elapsed the
residual thickness (s ) shall be measured and the test equipment shall be installed in the
environmental chamber. The test samples shall be charged further with the maximum possible surface
pressure (p ) and the measurement of the thickness shall be repeated at the limiting temperatures.
MS
The steady-state condition has been reached, if two measurements of the residual thickness (s ) made
at intervals of 24 h do not differ by more than 1 % from the thickness (s ). If after 90 days the steady-
state condition has not been achieved the test has failed. Following this test the intermediate layers
shall be pressed with the help of the pressure plates and the locking screws until half of the residual
thickness of the intermediate layers (s ) has been achieved or the pressure exceeds 2 ⋅ p .
3 MS
At the fittings, located in the middle of the plate, a vacuum pump with an inserted measuring device
for pressure, e.g. u-tube, shall be connected. At the exit of the vacuum pump a valve for throttling the
volume flow shall be installed, so that the volume flow can be adjusted to the given value of (85 ± 5)
l/h through the secondary measuring device for the volume flow. The length of the connecting line of
the measuring device for pressure to the fittings of the interstitial space shall be 250 mm. The flexible
connecting lines at the connection of the vacuum pump and the measuring device for the volume flow
shall be realized with an internal diameter of 6 mm.
The total length of the connecting line from the fittings to the vacuum pump shall be max. 1 m for the
measurements.
After installation of the test equipment as mentioned above and in Figure 2 the flow resistance shall be
taken from the measuring device for pressure after turning-on the vacuum pump and adjusting the
volume flow to (85 ± 5) l/h. The measurement shall be repeated at each test sample. The mean of the
measured values shall be compared with the limiting value of −1 kPa.
Dimensions in millimetres
Key
1 connection for vacuum pump with 85 l/h air
2 measuring device for pressure
3 test plate
4 intermediate layer
5 air impermeable foil
Test sample Initial Res. thickness at Thickness Flow back pressure at a
thickness p flow of 85 l/h air
MS
s
s (set-up as shown)
1 after loading s
mm
kPa
mm
mm
Figure 2 — Flow rate test set-up
5.1.4.1.4 Evaluation
The test shall be deemed to have been passed, if the air current back pressure emanating from the
intermediate layer with the thickness s3 is not less than −1 kPa (10 mbar) at a volume flow of (85 ± 15)
l/h of a
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