Bsi bs en 13160 7 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 — Pa

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Leak detection systems

Part 7: Requirements and test/assessment methods for interstitial spaces, leak

detection linings and leak detection jackets

BSI Standards Publication

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National foreword

This British Standard is the UK implementation of EN 13160-7:2016

It supersedes BS EN 13160-7:2003 which is withdrawn

The UK participation in its preparation was entrusted to TechnicalCommittee PVE/393/2, Leak detection devices

A list of organizations represented on this committee can beobtained on request to its secretary

This publication does not purport to include all the necessaryprovisions of a contract Users are responsible for its correctapplication

ISBN 978 0 580 86638 8ICS 23.020.01; 23.040.99; 29.260.20

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2016

Amendments issued since publication

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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

Leckanzeigesysteme - Teil 7: Anforderungen und /Bewertungsverfahren für Überwachungsräume,

Prüf-Leckschutzauskleidungen und Leckschutzummantelungen This European Standard was approved by CEN on 8 April 2016

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom

EUROPEAN COMMITTEE FOR STANDARDIZATION

C O M I T É E UR O P É E N DE N O R M A L I SA T I O N

E UR O P Ä I SC H E S KO M I T E E F ÜR N O R M UN G

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

worldwide for CEN national Members Ref No EN 13160-7:2016 E

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European foreword 4

1 Scope 6

2 Normative references 6

3 Terms and definitions 7

4 Requirements 7

4.1 Effectiveness of leak detection lining kits and leak detection jacket kits 7

4.1.1 Tightness against liquid and vapour 7

4.1.2 Permeability of leak detection linings and leak detection jackets 7

4.1.3 Free passage of liquid in the interstitial space 8

4.1.4 Free passage of air 8

4.1.5 Flow resistance after impact of stored media 8

4.1.6 Mechanical resistance against the imposed load by the stored medium 8

4.1.7 Chemical resistance 15

4.2 Durability of effectiveness 15

4.2.1 Durability against temperature 15

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 17

5.1.3 Free passage of liquid in the interstitial space 18

5.1.4 Free passage of air 19

5.1.5 Flow resistance after impact of stored media 22

5.1.6 Mechanical resistance against the imposed load by the stored medium 25

5.1.7 Chemical resistance 25

5.2 Durability of effectiveness 25

5.2.1 Durability against temperature 25

5.2.2 Durability against chemical attack 25

5.2.3 Durability against mechanical load 25

6 Assessment and verification of constancy of performance – AVCP 27

6.1 General 27

6.2 Type testing 28

6.2.1 General 28

6.2.2 Test samples, testing and compliance criteria 29

6.2.3 Test reports 29

6.2.4 Shared other party results 29

6.2.5 Cascading determination of the product type results 30

6.3 Factory production control (FPC) 31

6.3.1 General 31

6.3.2 Requirements 32

6.3.3 Product specific requirements 34

6.3.4 Procedure for modifications 35

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6.3.5 One-off products, pre-production products (e.g prototypes) and products

produced in very low quantity 35

7 Marking, labelling and packaging 36

8 Environmental aspects 37

Annex A (normative) Determination of the interstitial space volume for class I-systems 38

A.1 Test equipment 38

A.2 Preparation 38

A.3 Procedure 39

A.4 Evaluation 41

Annex B (informative) Environmental aspects 42

Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation 305/2011/EU 44

ZA.1 Scope and relevant characteristics 44

ZA.2 Procedure for AVCP of leak detection linings and leak detection jackets 45

ZA.2.1 System(s) of AVCP 45

ZA.2.2 Declaration of performance (DoP) 46

ZA.2.2.1 General 46

ZA.2.2.2 Content 47

ZA.2.2.3 Example of DoP 47

ZA.3 CE marking and labelling 49

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4

European foreword

This document (EN 13160-7:2016) 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 December 2016, and conflicting national standards shall be withdrawn at the latest by March 2018

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights

This document supersedes EN 13160-7:2003

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, which is an integral part of this document

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

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

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Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom

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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, in whole or in part, are normatively referenced in this document and are indispensable for its application 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, Leak detection systems — Part 2: Requirements and test/assessment methods for

pressure and vacuum systems

liquid systems for tanks

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)

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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

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Table 1 — Permeation of leak detection linings

Property Required value

Passage of stored products at installation of the leak protecting lining in metal tanks

with a passage of stored product of 0 g/m 2 ⋅ d max 100 g/m

2 ⋅ day

Passage of stored products at installation of the leak protecting lining in tanks with a

passage of stored product > 0 g/m 2 ⋅ d max 0,1 g/m

2 ⋅ day

Passage of deionized water max 4 g/m2 ⋅ day

NOTE By permeation rates > 0 g/m 2 ⋅ 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/m2 ⋅ day

Passage of deionized water max 4 g/m2 ⋅ day

4.1.3 Free passage of liquid in the interstitial space

The quantity of liquid, calculated according to EN 13160–2:2016, Formula (4) and the specific volume

Vsp according to Annex A shall enter the interstitial space by a vacuum change from (60 ± 5) kPa (pPA)

to (30 ± 5) kPa (pPE)

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

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Table 3 — Mechanical properties for polyvinylchloride (PVC)

No Property Test method Dimension Required value

1 Tensile strength,

Lengthwise and across

EN ISO 527-1 and EN ISO 527-3;

Test speed: 200 mm/min ± 10 % Specimen: Type 2

N/mm ≥ 15

2 Tensile elongation,

% > 200

3 Reaction of joint to shear test EN ISO 527-1 and EN ISO 527-3;

at normal climate on a cover, which shall not affect the dimensions

deviation ± 2 Effects of test media for polyvinylchloride (PVC) shall be according to Table 4

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Table 4 — Effects of test media for polyvinylchloride (PVC)

Property Test method Dimension Required value

Change of mass after storage in

deionized water and stored product

or test liquids according to Annex C of

EN 14879–4:2007

In conformity with EN ISO 62 at normal climate, change shall be determined after the following storage periods: 3, 14 and 56 d

%

≤ 15

Change of tensile strength and

elongation, in either direction after

storage in deionized water and stored

product (56 d at 23 °C) or test liquids

according to Annex C of EN 14879–

4:2007

EN ISO 527-1 and EN ISO 527-3 Test speed: 200 mm/min ± 10 % Specimen: Type 2 %

≤ 25 for tensile elongation the measured value

as per Table 3

storage in of folded materials in

deionized water and stored product

%

≤ 25

Change of reaction of the joint to

shear test after storage in deionized

water and stored product

Off-joint fracture

Mechanical properties for thermoplastic and thermoplastic elastomers except polyvinylchloride (PVC) shall be according to Table 5

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N/mm ≥ 15

2 Tensile elongation,

% > 200

3 Reaction of joint to shear

test EN ISO 527-1 and EN ISO 527-3; Test speed: 200 mm/min ± 10 %

Specimen: Type 2

— Off-joint

fracture, joint factor ≥ 0,5

deviation ± 10

deviation ± 10 % Effects of test media for thermoplastic and thermoplastic elastomers except polyvinylchloride (PVC) shall be according to Table 6

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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

deionized water and stored

product or test liquids according to

Annex C of EN 14879–4:2007

In conformity with EN ISO 62 at normal climate, change shall be determined after the following storage periods: 3 d, 14 d and 56 d

%

≤ 20

storage in deionized water and

storage in of folded materials in

%

≤ 60 for tensile elongation the measured value

as per Table 5

Change of reaction of the joint to

shear test after storage in

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Flexural strength MPa EN ISO 178 EN ISO 178 5 ≥ 80

Impact strength kJ/m2 EN ISO 179-1 and

EN ISO 179-2 EN ISO 179-1 5 ≥ 5 Dimensional stability under

heat °C EN ISO 75-1 EN ISO 75-2

EN ISO 175 Cut surfaces shall be sealed

3

+4

−2

Change of flexural strength

after 28 days storage

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

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Table 8 — Requirements for intermediate layer of resin and spacer of leak detection linings

and of leak detection jackets

Property Dimension Test method

sample

Values of property

dimension

mm number Compression strength at

condition at time of supply

N/mm 2 EN ISO 604

length and width according to

EN ISO 604 height: sampling

≥ 1,0 (no break) for tanks with a height

or diameter of ≤ 3 m

or diameter of > 3 m

Change of compression

strength after 112 days

storage at ambient

temperature in water and

stored product or test liquids

Cut surfaces shall

be sealed

5

or diameter of ≤ 3 m

or diameter of > 3 m The construction of leak detection linings and leak detection jackets can be according to Figure 1

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

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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

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;

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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 (pt2) shall be used:

— 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:

t

V p

pB E) 1

(

where

pB is the pressure at the beginning of the test, in Pascal

pE is the pressure at the end of the test, in Pascal

t is the test time, in seconds

V1 is the volume of the interstitial space according to Annex A in litres

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5.1.2 Permeability

— Stored product or the following test liquids:

a) For unleaded petrol: According to EN 228

1) with maximum 5 % (V/V) ethanol

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 m2 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

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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

Determine the rate of mass loss of the 'steady-state’ period (gradient of the regression line) in g ⋅ d-1 Calculate the surface area A, where A = π ⋅L ⋅ D, in m2 Divide the rate of mass loss by A to give the permeation rate in g ⋅ m-2 ⋅ d-1 for each specimen

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

— measuring device for pressure accuracy 0,6 % of the maximum graduated value;

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

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

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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;

— measuring device for the volume flow accuracy 0,6 % of the maximum graduated value

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 (pMS) according to Formula (2) – but a minimum of 50 kPa (0,5 bar)

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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):

First the initial thickness of the intermediate layers (s1) 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 (s2) 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 (pMS) and the measurement of the thickness shall be repeated at the limiting temperatures

The steady-state condition has been reached, if two measurements of the residual thickness (s2) made

at intervals of 24 h do not differ by more than 1 % from the thickness (s1) If after 90 days the 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

steady-thickness of the intermediate layers (s3) has been achieved or the pressure exceeds 2 ⋅ pMS

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

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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 thickness

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 air

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5.1.4.2 Free passage of air through double skin tanks and pipes

5.1.4.2.1 Test equipment

— vacuum or pressure pump;

5.1.4.2.3 Procedure

The free passage of the interstitial space of the sample of the tank or pipework shall be tested by sampling by means of borings with a drill (2 mm) at positions determined by the person during the test The pressure or vacuum reached before the test is carried out shall be reduced within a short time according to the capacity of the interstitial space by charging and discharging and shall be visible

at the measuring device for pressure

5.1.4.2.4 Evaluation

The test shall be deemed to have been passed, if after opening of the interstitial space due to drilling a

2 mm hole air is deflated in the interstitial space at the pressure system and the pressure in the interstitial space falls or at the vacuum system air is sucked into the interstitial space due to drilling a

2 mm hole, so that the pressure in the interstitial space increases immediately

5.1.5 Flow resistance after impact of stored media

— valve;

— measuring instrument for volume flow accuracy 2 % of the measured value

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The sides of the test specimen shall be closed gas tight At the exit of the vacuum pump a flow control valve shall be installed, so that the volume flow can be adjusted by the downstream volume indicator

to the given value of 85 l/h (Figure 3) The flexible interconnection lines for the connection of the leak detector and the volume indicator shall be designed with an inside diameter of 6 mm The entire length of the interconnection line of the connecting nozzle up to the measuring device for pressure shall be 1 m for the measurement

Dimensions in millimetres

Key

1 test nozzle ∅ 4 mm

3 vacuum pump with constant volume flow of 85 l/h

4 measuring instrument for volume flow

5 interstitial space of the test sample

Figure 3 — Suitability test of the construction of the interstitial space

With tanks, the tests for determination of the flow resistance shall be carried out at three further test nozzles, which shall be distributed over the tank circumference With pipework, additionally to the connecting nozzles for the leak detector and to the test nozzles, two further test nozzles shall be installed at a distance of 2,5 m apart to the nozzles already available The testing apparatus shall be installed according to Figure 4 and Figure 5

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Key

1 valve

2 interstitial space

Figure 4 — Test set-up for the determination of the flow resistance of the interstitial space of

tanks

Key

1 valve

5 double skin pipework if needed with formed pieces and fittings

Figure 5 — Test set-up for the determination of the flow resistance of the interstitial space of

pipework 5.1.5.3 Procedure

The flow resistance for the interstitial space shall be determined by means of the test arrangement in Figure 3 to Figure 5

After installation of the test apparatus as shown above, the flow resistance shall be taken from the measuring device for pressure after starting the vacuum pump and adjusting the volume flow to

85 l/h The measurement shall be repeated at each test nozzle, while the test nozzle with the greatest

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5.1.6 Mechanical resistance against the imposed load by the stored medium

5.1.6.1 Influence of the mechanical resistance to the free passage in the interstitial space

The test shall be carried out according to 5.1.4.2

5.1.6.2 Mechanical properties

The tests shall be carried out according to Table 3 to Table 8

5.1.7 Chemical resistance

5.1.7.1 Inner layer/outer layer in contact with the stored liquid

The components of the GRP leak detection lining kits and GRP leak detection jackets kits according to

EN 13121-1 and 5.2, 5.5 and 5.6 of EN 13121-2:2003

5.1.7.2 Intermediate layer 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

5.2 Durability of effectiveness

5.2.1 Durability against temperature

For thermoplastic and thermoplastic elastomers leak detection lining kits according to Table 3 and Table 5

For intermediate layer according to 5.1.4.2

For GRP leak detection lining kits and leak detection jacket kits according to Table 7 and Table 8

5.2.2 Durability against chemical attack

The thermoplastic and thermoplastic elastomers leak detection lining kits according to Table 4 and Table 6

The UP and EP leak detection lining kits and leak detection jacket kits according to Table 7 or Table 8

5.2.3 Durability against mechanical load

5.2.3.1 Leak detection lining kits

The components of the UP and EP leak detection lining kits shall fulfil the requirements according to

EN 13121-1

Tiêu đề	Leak Detection Systems Part 7: Requirements And Test/Assessment Methods For Interstitial Spaces, Leak Detection Linings And Leak Detection Jackets
Trường học	British Standards Institution
Chuyên ngành	Standards
Thể loại	Standard
Năm xuất bản	2016
Thành phố	Brussels

Định dạng
Số trang	56
Dung lượng	2,06 MB