Railway applications - Infrastructure - Resilient element for floating slab system

This document is applicable to Resilient Elements for Floating Slab system (REFS) – Elements used in floating slab and defines the test procedures and their acceptance criteria.
The document covers not only those parameters related to the effectiveness of a track structure in mitigating vibrations, that is, to reduce the emission of vibrations and structure-borne noise, but also the parameters that are needed for the static analysis and for the verification of track safety.
Floating slab track systems in the form of track base plates and track troughs are individual solutions in which there is considerable variation in the engineering design and the types of resilient elements used. For this reason, a floating slab track system is always an individual engineering solution and therefore, it is not possible to define all specific conditions for the resilient elements in the present document.
The most typical types of resilient elements are:
—   Full surface bearings,
—   Strip bearings,
—   Discrete bearings (including the helical steel spring element),
—   Vertical bearings.
This document provides particular information in the following areas:
—   test methods, test arrangements and acceptance criteria,
—   data supplied by the purchaser and by the supplier,
—   definition of general process of design approval tests,
—   definition of routine tests.
This document defines the specific test procedures for REFS:
—   stiffness tests,
—   fatigue tests,
—   severe environmental condition test.
This document also sets out procedures for testing fitness for purpose and provides information on quality monitoring as part of quality assurance procedures. This document does not, however, contain requirements pertaining to the functions of Resilient Element for Floating Slab system. It is the responsibility of the purchaser to define these requirements and to choose the optional tests.
This document is not applicable for fastening system and for booted concrete block and sleeper completed with boots covered by EN 13481 5.

Bahnanwendungen - Infrastruktur - Elastisches Element für Unterbodenmattensystem

Dieses Dokument ist anzuwenden für elastische Elemente für Masse-Feder-Systeme (REFS) und legt die Prüfverfahren und die Akzeptanzkriterien fest.
Das Dokument behandelt nicht nur die Messgrößen, die sich auf die Wirksamkeit der Schwingungsminderung eines Oberbaus beziehen, das heißt auf die Reduzierung der Emission von Schwingungen und Körperschall, sondern auch die Messgrößen, die für die statische Analyse und den Nachweis der Gleis-Sicherheit benötigt werden.
Masse-Feder-Systeme in der Form von Gleistragplatten und Gleiströgen sind individuelle Lösungen mit erheblichen Unterschieden in der Bauart und den verwendeten Arten der elastischen Elemente. Aus diesem Grund stellt jedes bettungslose Schienensystem eine individuelle bautechnische Lösung dar, weshalb es nicht möglich ist, alle spezifischen Bedingungen für die elastischen Elemente im vorliegenden Dokument festzulegen.
Die am häufigsten verwendeten elastischen Elemente sind:
—   vollflächige Lager;
—   Streifenlager;
—   diskrete Lager (einschließlich des Schraubendruckfederelementes aus Stahl);
—   Vertikallager.
Dieses Dokument bietet besondere Informationen auf den folgenden Gebieten:
—   Prüfverfahren, Prüfanordnungen und Abnahmekriterien;
—   von Käufer und Lieferant zur Verfügung gestellte Daten;
—   Definition der allgemeinen Bauartzulassungsprüfungen;
—   Definition der Prüfungen zur Qualitätssicherung.
Dieses Dokument legt die spezifischen Prüfverfahren für REFS fest:
—   Steifigkeitsprüfungen;
—   Ermüdungsprüfungen;
—   Prüfung der Beständigkeit gegen starke Umweltbelastungen.
In diesem Dokument werden auch Verfahren für die Eignungsprüfung festgelegt und Informationen zur Qualitätsüberwachung als Teil der Qualitätssicherungsverfahren bereitgestellt. Dieses Dokument enthält jedoch keine Anforderungen hinsichtlich der Funktion der elastischen Elemente für Masse-Feder-Systeme. Die Festlegung dieser Anforderungen und die Auswahl der optionalen Prüfungen liegt in der Verantwortung des Käufers.
Dieses Dokument ist nicht anzuwenden für Befestigungssysteme und für in Schuhe eingebettete Betonblöcke und Schwellen, die in EN 13481 5 behandelt werden.

Applications ferroviaires - Infrastructure - Élément élastique pour système de dalle flottante (REFS)

Le présent document s'applique aux éléments élastiques pour système de dalle flottante (REFS) et définit les modes opératoires d'essai ainsi que les critères d'acceptation associés.
Le présent document traite non seulement des paramètres liés à l'aptitude des voies à atténuer les vibrations, c'est-à-dire réduire les émissions de vibrations et de bruit solidien, mais également des paramètres nécessaires à l'analyse statique et à la vérification de la sécurité des voies.
Les systèmes de voie sur dalle flottante constitués de selles et de dalles pleines sont des solutions individuelles, qui varient considérablement sur le plan de la conception technique et des types d'éléments élastiques utilisés. C'est la raison pour laquelle un système de voie sur dalle flottante constitue toujours une solution technique individuelle et, par conséquent, il n'est pas possible de définir dans le présent document l'ensemble des conditions spécifiques aux éléments élastiques.
Les types d'éléments élastiques les plus couramment utilisés sont les suivants :
—   supports intégraux ;
—   support par bandes ;
—   supports discrets (y compris l'élément ressort hélicoïdal en acier) ;
—   supports verticaux.
Ce document donne des informations particulières dans les domaines suivants :
—   méthodes d'essai, montages d'essai et critères d’acceptation ;
—   données fournies par l'acheteur et par le fournisseur ;
—   définition d'un processus d’essais de qualification général ;
—   définition des essais de série.
Le présent document définit les modes opératoires d'essai spécifiques au REFS :
—   essais de raideur ;
—   essais de fatigue ;
—   essai en conditions environnantes rigoureuses.
Le présent document établit également des modes opératoires pour les essais d'aptitude à l'emploi et fournit des informations sur la gestion de la qualité dans le cadre des procédures d'assurance qualité. Cependant, le présent document ne contient pas les exigences relatives aux fonctions de l'élément élastique pour système de dalle flottante. La définition de ces exigences et le choix des essais facultatifs relèvent de la responsabilité de l'acheteur.
Le présent document n'est pas applicable aux systèmes de fixation ni aux traverses et supports en béton avec chaussons, qui sont spécifiés dans l'EN 13481 5.

Železniške naprave - Infrastruktura - Elastični element za sistem plavajočih plošč

General Information

Status
Published
Publication Date
20-Dec-2022
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
21-Dec-2022
Due Date
07-Jun-2023
Completion Date
21-Dec-2022

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 17682:2023
01-marec-2023

Železniške naprave - Infrastruktura - Elastični element za sistem plavajočih plošč

Railway applications - Infrastructure - Resilient element for floating slab system

Bahnanwendungen - Infrastruktur - Elastisches Element für Unterbodenmattensystem

Applications ferroviaires - Infrastructure - Elément élastique pour système de dalles

flottantes
Ta slovenski standard je istoveten z: EN 17682:2022
ICS:
93.100 Gradnja železnic Construction of railways
SIST EN 17682:2023 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 17682:2023
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SIST EN 17682:2023
EN 17682
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 93.100
English Version
Railway applications - Infrastructure - Resilient element
for floating slab system

Applications ferroviaires - Infrastructure - Élément Bahnanwendungen - Infrastruktur - Elastisches

élastique pour système de dalle flottante (REFS) Element für Unterbodenmattensystem

This European Standard was approved by CEN on 30 October 2022.

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

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17682:2022 E

worldwide for CEN national Members.
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SIST EN 17682:2023
EN 17682:2022 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 7

3 Terms and definitions ................................................................................................................................... 7

4 Symbols and abbreviations ......................................................................................................................... 9

5 Loads applied to the REFS ......................................................................................................................... 11

6 Samples dimensions .................................................................................................................................... 12

7 Design approval tests and routine tests .............................................................................................. 12

7.1 General ............................................................................................................................................................. 12

7.2 Summary of design approval and routine tests ................................................................................ 13

7.3 Requirements for specifications ............................................................................................................. 13

7.3.1 Dimensions and mass ................................................................................................................................. 13

7.3.2 Static and dynamic vertical bedding modulus determined with flat plate (FP) ................... 14

7.3.3 Acoustic bedding modulus ........................................................................................................................ 14

7.3.4 Fatigue test ..................................................................................................................................................... 16

7.3.5 Static horizontal bedding modulus ........................................................................................................ 16

7.3.6 Water and climatic resistance of REFS ................................................................................................. 17

7.3.7 Ageing test with high temperatures ...................................................................................................... 17

8 Data to be supplied ...................................................................................................................................... 17

8.1 General ............................................................................................................................................................. 17

8.2 Data supplied by the purchaser (prior to the project design approval tests) ....................... 17

8.3 Data supplied by the supplier (after the project design approval tests and prior to

first start-up of production) ..................................................................................................................... 18

9 Quality control .............................................................................................................................................. 18

10 Marking, labelling and packaging .......................................................................................................... 19

Annex A (normative) Flat plate (FP) — Design of the FP ............................................................................ 20

Annex B (normative) Data sheet .......................................................................................................................... 21

Annex C (normative) Bedding modulus and stiffness measurement determined with FP ............ 22

C.1 Static test procedure ................................................................................................................................... 22

C.2 Dynamic test procedure............................................................................................................................. 26

Annex D (normative) Fatigue test ....................................................................................................................... 29

D.1 Principle .......................................................................................................................................................... 29

D.2 Apparatus ........................................................................................................................................................ 29

D.3 Procedure........................................................................................................................................................ 29

D.4 Test report ...................................................................................................................................................... 30

Annex E (informative) Static horizontal bedding modulus ....................................................................... 31

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SIST EN 17682:2023
EN 17682:2022 (E)

E.1 Principle ........................................................................................................................................................... 31

E.2 Apparatus ........................................................................................................................................................ 31

E.3 Procedure ........................................................................................................................................................ 31

E.4 Test report ...................................................................................................................................................... 33

Annex F (informative) Water and climatic resistance .................................................................................. 35

F.1 Principle ........................................................................................................................................................... 35

F.2 Apparatus ........................................................................................................................................................ 35

F.3 Procedure ........................................................................................................................................................ 35

F.4 Test report ...................................................................................................................................................... 37

Annex G (informative) Ageing test with high temperatures ...................................................................... 38

G.1 Principle ........................................................................................................................................................... 38

G.2 Apparatus ........................................................................................................................................................ 38

G.3 Procedure ........................................................................................................................................................ 38

G.4 Test report ...................................................................................................................................................... 39

Bibliography ................................................................................................................................................................. 40

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SIST EN 17682:2023
EN 17682:2022 (E)
European foreword

This document (EN 17682:2022) has been prepared by Technical Committee CEN/TC 256 “Railway

applications”, 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 June 2023 and conflicting national standards shall be

withdrawn at the latest by June 2023.

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.

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.
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SIST EN 17682:2023
EN 17682:2022 (E)
Introduction

In a track for railway vehicles, the Resilient Element for Floating Slab (REFS) is a product which is placed

between the substructure and the ballastless track. This document applies to the performance-related

properties of this element.
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SIST EN 17682:2023
EN 17682:2022 (E)
1 Scope

This document is applicable to resilient elements for floating slab system (REFS) – elements used in

floating slab and defines the test procedures and their acceptance criteria.

The document covers not only those parameters related to the effectiveness of a track structure in

mitigating vibrations, that is, to reduce the emission of vibrations and structure-borne noise, but also the

parameters that are needed for the static analysis and for the verification of track safety.

Floating slab track systems in the form of track base plates and track troughs are individual solutions in

which there is considerable variation in the engineering design and the types of resilient elements used.

For this reason, a floating slab track system is always an individual engineering solution and therefore, it

is not possible to define all specific conditions for the resilient elements in this document.

The most typical types of resilient elements are:
— full surface bearings;
— strip bearings;
— discrete bearings (including the helical steel spring element);
— vertical bearings.
This document provides particular information in the following areas:
— test methods, test arrangements and acceptance criteria;
— data supplied by the purchaser and by the supplier;
— definition of general process of design approval tests;
— definition of routine tests.
This document defines the specific test procedures for REFS:
— stiffness tests;
— fatigue tests;
— severe environmental condition test.

This document also sets out procedures for testing fitness for purpose and provides information on

quality monitoring as part of quality assurance procedures. This document does not, however, contain

requirements pertaining to the functions of Resilient Element for Floating Slab system. It is the

responsibility of the purchaser to define these requirements and to choose the optional tests.

This document is not applicable for fastening system and for booted concrete block and sleeper

completed with boots covered by EN 13481-5.
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SIST EN 17682:2023
EN 17682:2022 (E)
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 ISO 527 (all parts), Plastics - Determination of tensile properties (ISO 527 (all parts))

EN ISO 1798, Flexible cellular polymeric materials - Determination of tensile strength and elongation at

break (ISO 1798)

EN ISO 7500-1:2018, Metallic materials - Calibration and verification of static uniaxial testing machines -

Part 1: Tension/compression testing machines - Calibration and verification of the force-measuring system

(ISO 7500-1:2018)

EN ISO 9513:2012, Metallic materials - Calibration of extensometer systems used in uniaxial testing (ISO

9513:2012)

ISO 37, Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
floating slab system

track system where a designed elasticity by a resilient element is introduced between the ballastless track

system or trough slab and its substructure
3.2
resilient element for floating slab system
REFS

product of resilient material installed in the floating slab system including all integral parts of the product

in order to mitigate vibrations
3.3
full surface bearing

resilient element arranged as a mat in between the floating slab and its substructure to provide

continuous elastic support of the floating slab
3.4
strip bearing

resilient element arranged as a strip in between the floating slab and its substructure to provide

continuous longitudinal elastic support of the floating slab. Continuous means any longitudinal gap

between 2 strips is less than 10 % of one strip length, and not larger than strip width, except where larger

gaps are needed for construction requirements such as drainage
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SIST EN 17682:2023
EN 17682:2022 (E)
3.5
discrete bearing

resilient element arranged as a point support in between floating slab and its substructure to provide

discontinuous elastic support of the floating slab (including helical steel spring element), with designed

spacing between them over 10 % of their length

Note 1 to entry: Helical steel spring element, consisting of a helical steel spring according to EN 13906-1 and a

viscous or a solid damping system assembled in one device.
3.6
vertical bearing

resilient element placed vertically for floating slab system in order to constrain the horizontal movements

3.7
stiffness
force per unit deflection measured under a uniaxial force
[SOURCE: EN 16730:2016, 3.9]
3.8
bedding modulus

compressive stress (force per unit area) per unit deflection, measured under a uniaxial force

[SOURCE: EN 16730:2016, 3.10, modified]
3.9
static stiffness
static bedding modulus
force or stress per unit deflection measured under a uniaxial static load
[SOURCE: EN 16730:2016, 3.12, modified]
3.10
dynamic stiffness
dynamic bedding modulus

force or stress per unit deflection measured under a uniaxial force which acts periodically at a given

frequency of (5 to 20) Hz around specific force or stress levels

Note 1 to entry: This value is determined mainly for calculation of dynamic deformation of tracks.

[SOURCE: EN 16730:2016, 3.13, modified]
3.11
acoustic stiffness
acoustic bedding modulus

dynamic stiffness or bedding modulus that is measured under a static preload and at small amplitudes of

displacement or velocity applied in the frequency range relevant to noise or vibration perception

3.12
mitigation of ground-borne noise and vibration

reduction of mechanical vibration and/or ground-borne noise transmitted into the surroundings

Note 1 to entry: REFS has no influence on airborne noise-mitigation except in some indirect cases, e.g. mitigate

the reradiated sound from bridge-structures.
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SIST EN 17682:2023
EN 17682:2022 (E)
3.13
general design approval tests

tests performed to demonstrate the compliance of the product properties with the requirements, for

standard dimensions
3.14
project design approval tests

tests performed to demonstrate the compliance of the product properties with the requirements for a

specific project, set by the purchaser
3.15
routine tests

tests performed to demonstrate the compliance of the product properties to the quality plan, set by the

supplier
3.16
purchaser

operator or user of the equipment, or the customer of the material on the user’s behalf

[SOURCE: EN 17319:2020, 3.12, modified]
3.17
supplier
company /body responsible for the execution of purchaser’s requirements

Note 1 to entry: This can be the manufacturer or his designated representative, stockist, distributer, or agent.

[SOURCE: EN 15427-1-1:2022, 3.7, modified]
3.18
manufacturer

organization responsible for blending and processing material constituents, integrating them in the

manufacturing process and subsequently cutting, stamping or moulding to final dimensions

4 Symbols and abbreviations

For the purposes of this document, the symbols and indices in Tables 1 and 2 apply.

Table 1 — Symbols
Symbols Characterization Units
A area mm
C bedding modulus N/mm
d displacement mm
Δ variation -
F load N
f frequency Hz
k stiffness N/mm
m mass kg
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SIST EN 17682:2023
EN 17682:2022 (E)
Symbols Characterization Units
η loss factor -
stiffening ratio between dynamic bedding modulus and static bedding
κ -
modulus or dynamic stiffness and static stiffness
σ stress (compressive or tensile) N/mm
Φ dynamic coefficient -
R roughness mm
Table 2 — Indices of the symbols
Indices Characterization
0 minimum load
1 service load
2 evaluation load
3 maximum load
PH applicable horizontal live load
PHB applicable horizontal load exerted by the reference vehicle
PV applicable vertical live load
PVB applicable vertical load exerted by the reference vehicle
i Hz value of frequency in measurement
af after
be before
dyn dynamic
A acoustic (bedding modulus)
h horizontal
max maximum
min minimum
i sequential number in order to differentiate types of measurements
stat static
test test load
v vertical
a arithmetic mean value
c cycles
M million
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SIST EN 17682:2023
EN 17682:2022 (E)
5 Loads applied to the REFS

As a floating slab track system is always an individual engineering solution for a particular application, it

is not possible to specify generally applicable load ranges for the resilient elements.

The purchaser shall define the different loads (force or pressure) acting on REFS:

F or σ (minimum load): Dead load of the slab including rails, rail fastenings,
0 0
without safety factor.
F or σ (service load): Minimum load (F or σ ) plus the product of the dynamic
1 1 0 0
coefficient (vibration coefficient) Φ and the applicable
vertical live load (F or σ ) on curved or straight track.
PV PV

F or σ (evaluation load for slab Minimum load (F or σ ) plus the product of the dynamic

2 2 0 0
design): coefficient Φ and the applicable vertical live load (F or
PVB
σ ) exerted by the reference vehicle, or plus the product
PVB
of the dynamic coefficient Φ and the load model used for
the verification of slab safety.
F or σ (maximum load for slab 1,35 σ plus 1,5 times the product of the dynamic
3 3 0
design): coefficient Φ and the applicable vertical live load (F or
PVB
σ ) exerted by the reference vehicle, or plus 1,45 times
PVB
the product of the dynamic coefficient Φ and the load
model used for the verification of track safety.

F or σ (minimum load): Horizontal load resulting from the longitudinal or lateral

h0 h0
force component acting parallel to the lateral or
longitudinal inclination in the concrete base and from the
superelevation of the curve of the track slab support layer.
F or σ (service load): Minimum load σ plus the horizontal live load σ
h1 h1 h0 PH
generated by the vehicles used for regular scheduled
services.
F or σ (evaluation load): Minimum load σ plus the horizontal live load σ of the
h2 h2 h0 PHB
reference vehicle or the horizontal live load of the load
model used in the verification of track safety.
F or σ (maximum load): 1,35 σ plus 1,5 times the horizontal live load σ of the
h3 h3 h0 PHB
reference vehicle, or plus 1,45 times the horizontal live
load of the load model used in the verification of track
safety.

The dynamic coefficient Φ incorporates the additional dynamic effects associated with the passage of the

vehicle. Currently, a dynamic coefficient of Φ = 1,3 is used for running speeds up to 200 km/h. For higher

speeds, the dynamic coefficient should be provided by the purchaser.

NOTE 1 The applicable vertical live load PV is determined by the axle loads of the vehicles used for regular

scheduled services.

NOTE 2 In the case of tramways, urban light rail systems and underground railways, the live load PVB of the

reference vehicle is assumed to be the most unfavourable loading scenario generated by the regular scheduled

services or by any special-purpose vehicles. For suburban rapid transit systems and main-line railways, the load

model LM 71 as defined in EN 1991-2 is generally assumed for verifications of track safety.

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SIST EN 17682:2023
EN 17682:2022 (E)

NOTE 3 The horizontal live load of a railway vehicle comprises the centrifugal forces, the transverse impact

(nosing force), and the braking and accelerating forces. The horizontal live load does not contain any surcharges

(loading factors), e.g. it does not contain a dynamic coefficient (vibration coefficient). The centrifugal force is

calculated for σ from the axle loads of the vehicle used for regular scheduled service while taking account of the

relevant track curve radius and track curve speed. Values assumed for σ and F are based on the reference vehicle

h2 h3

or the load model applied in the verification of track safety rather than on the vehicle used for regular scheduled

service.

NOTE 4 The factor of 1,5 is the partial safety factor in EN 1990. The factor of 1,45 is the partial safety factor in

DIN-Fachbericht 101 [1]. The partial safety factor refers to the loads applied and not to the type of structural

supporting structure to be calculated.
6 Sample dimensions
Table 3 presents the sample dimensions for the tests.
Table 3 — Sample dimensions for tests
Bearings Dimensions
Full surface
300 mm × 300 mm × “thickness of the bearing”
bearings
300 mm length × “width of the bearing (maximum 300 mm)” × “thickness of the
Strip bearings
bearing”
Dimensions of the discrete bearing or helical steel spring elements (the whole
Discrete
element consisting of steel spring and viscous or solid damping system should be
bearings
considered)

Vertical Dimensions in function of type (full surface, strip or discrete) of bearings used in the

bearings project

For general design approval tests, it is recommended for discrete bearings and vertical bearings to use

sample dimensions: 300 mm × 300 mm. Other dimensions than the recommended ones are possible.

In the case of resilient elements with studs or other geometrically deformable structures, the dimensions

(close to 300 mm × 300 mm and maximum 320 mm × 320 mm) of the test object shall be modified.

7 Design approval tests and routine tests
7.1 General

This clause defines the test objectives and requested information about the REFS.

In order to be able to identify REFS at a later date, the following values shall be indicated:

— the mass of the product and all its components, see 7.3.1;
— the results of a suitable and relevant material analysis.

The supplier shall provide data to meet the objectives of the tests and/or the provision of requested

information in respect of REFS including:
— the data sheet as described in Annex B, Table B.1;

— any transportation, storage and installation recommendations and procedures to preserve the

material characteristics and original performance, see 8.3.
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SIST EN 17682:2023
EN 17682:2022 (E)
7.2 Summary of design approval and routine tests

The general design approval tests, project design approval tests and the routine tests (for quality

assurance and quality monitoring) are stated in Table 4. The general design approval does not cover the

vertical bearings but vertical bearings can be tested analogue to horizontal bearings.

The values determined in design approval tests shall act as the reference values for quality assurance and

quality monitoring procedures.

The frequency of routine tests is defined according to the quality plan of the supplier.

Table 4 —Tests for REFS
General design Project design
Tests Clause Routine tests
approval tests approval tests
Dimensions and
7.3.1 Mandatory Mandatory Mandatory
mass
Static vertical Mandatory at
7.3.2 Mandatory Mandatory
bedding modulus (23 ± 5) °C
Mandatory for
Dynamic vertical
7.3.2 Mandatory 5 Hz Mandatory 5 Hz 5 Hz at
bedding modulus
(23 ± 5) °C
Acoustic bedding
Not applicable
7.3.3 Optional Mandatory
modulus
Fatigue test 7.3.4 Mandatory Optional Not applicable
Static horizontal
7.3.5 Optional Optional Not applicable
bedding modulus
Water and climatic
7.3.6 Optional Optional Not applicable
resistance
Ageing test with
7.3.7 Optional Optional Not applicable
high temperatures

For practical reasons, the stiffness can be used instead of the bedding modulus for the test in the 7.3.

NOTE 1 Other tests can be conducted, e.g. fire resistance, resistance to chemical agents, resistance to

hydrocarbon, resistance to ozone, environment and end of life, etc.
NOTE 2 Other tests can be conducted for vertical bearings, e.g. shear test, etc.
7.3 Requirements for specifications
7.3.1 Dimensions and mass

The supplier shall indicate the range of available dimensions with tolerances of the REFS and type of joint

in case of full surface bearing or strip bearings.

The thickness and mass of REFS shall be indicated in order to enable identification.

Test arrangement:

Thickness and mass are measured with suitable instruments. The minimum accuracies to measure the

dimensions and the mass are respectively ± 1 mm and ± 1 g.
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SIST EN 17682:2023
...

SLOVENSKI STANDARD
oSIST prEN 17682:2021
01-september-2021

Železniške naprave - Infrastruktura - Elastični element za sistem plavajočih plošč

Railway applications - Infrastructure - Resilient element for floating slab system

Bahnanwendungen - Infrastruktur - Elastisches Element für Unterbodenmattensystem

Applications ferroviaires - Infrastructure - Elément élastique pour système de dalles

flottantes
Ta slovenski standard je istoveten z: prEN 17682
ICS:
93.100 Gradnja železnic Construction of railways
oSIST prEN 17682:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 17682:2021
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oSIST prEN 17682:2021
DRAFT
EUROPEAN STANDARD
prEN 17682
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2021
ICS 93.100
English Version
Railway applications - Infrastructure - Resilient element
for floating slab system

Applications ferroviaires - Infrastructure - Elément Bahnanwendungen - Infrastruktur - Elastisches

élastique pour système de dalles flottantes Element für Unterbodenmattensystem

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 256.

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-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, Turkey 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
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17682:2021 E

worldwide for CEN national Members.
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oSIST prEN 17682:2021
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Contents Page

European foreword ....................................................................................................................................................... 5

Introduction .................................................................................................................................................................... 6

1 Scope .................................................................................................................................................................... 7

2 Normative references .................................................................................................................................... 8

3 Terms and definitions ................................................................................................................................... 8

4 Symbols and abbreviations ...................................................................................................................... 10

5 Loads applied to the REFS ......................................................................................................................... 12

6 Samples dimensions .................................................................................................................................... 13

7 Design approval tests and routine tests .............................................................................................. 13

7.1 General ............................................................................................................................................................. 13

7.2 Summary of design approval and routine tests ................................................................................ 13

7.3 Requirements for specification of REFS ............................................................................................... 14

7.3.1 Dimensions and mass ................................................................................................................................. 14

7.3.2 Static and dynamic vertical bedding modulus determined with Flat Plate (FP) .................. 15

7.3.3 Acoustic bedding modulus ........................................................................................................................ 15

7.3.4 Fatigue test ..................................................................................................................................................... 17

7.3.5 Static horizontal bedding modulus ........................................................................................................ 17

7.3.6 Water and climatic resistance of REFS ................................................................................................. 17

7.3.7 Ageing test with high temperatures ...................................................................................................... 18

8 Data to be supplied ...................................................................................................................................... 18

8.1 General ............................................................................................................................................................. 18

8.2 Data supplied by the purchaser (prior to the Project design approval tests) ....................... 18

8.3 Data supplied by the supplier (after the Project design approval tests and prior to

first start-up of production) ..................................................................................................................... 19

9 Rules for use of REFS ................................................................................................................................... 19

10 Quality control .............................................................................................................................................. 19

11 Marking, labelling and packaging .......................................................................................................... 20

Annex A (normative) Flat Plate (FP) .................................................................................................................. 21

A.1 Design of the FP ............................................................................................................................................. 21

Annex B (normative) Data sheet .......................................................................................................................... 22

Annex C (normative) Bedding modulus measurement of REFS determined with FP ....................... 23

C.1 Static test procedure ................................................................................................................................... 23

C.1.1 Principle .......................................................................................................................................................... 23

C.1.2 Apparatus ........................................................................................................................................................ 23

C.1.3 Procedure........................................................................................................................................................ 24

C.1.4 Test report ...................................................................................................................................................... 28

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C.2 dynamic test procedure ............................................................................................................................. 28

C.2.1 Principle ........................................................................................................................................................... 28

C.2.2 Apparatus ........................................................................................................................................................ 28

C.2.3 Procedure ........................................................................................................................................................ 28

C.2.4 Test report ...................................................................................................................................................... 30

Annex D (normative) Fatigue test ........................................................................................................................ 31

D.1 Principle ........................................................................................................................................................... 31

D.2 Apparatus ........................................................................................................................................................ 31

D.3 Procedure ........................................................................................................................................................ 31

D.4 Test report ...................................................................................................................................................... 32

Annex E (informative) Static horizontal bedding modulus of REFS ........................................................ 33

E.1 Principle ........................................................................................................................................................... 33

E.2 Apparatus ........................................................................................................................................................ 33

E.2.1 FP (flat plate) .................................................................................................................................................. 33

E.2.2 REFS test sample (see Clause 6) .............................................................................................................. 33

E.2.3 Abrasive cloth ................................................................................................................................................ 33

E.2.4 Actuator ............................................................................................................................................................ 33

E.2.5 Displacement measuring instruments. ................................................................................................. 33

E.2.6 Force measuring instruments. ................................................................................................................. 33

E.2.7 Recording equipment. ................................................................................................................................. 33

E.3 Procedure ........................................................................................................................................................ 34

E.4 Test report ...................................................................................................................................................... 35

Annex F (informative) Water and climatic resistance of REFS .................................................................. 37

F.1 Principle ........................................................................................................................................................... 37

F.2 Apparatus ........................................................................................................................................................ 37

F.2.1 Load platen...................................................................................................................................................... 37

F.2.2 REFS test sample ........................................................................................................................................... 37

F.2.3 Actuator ............................................................................................................................................................ 37

F.2.4 Water bath ....................................................................................................................................................... 37

F.2.5 Climatic chamber. ......................................................................................................................................... 37

F.3 Procedure ........................................................................................................................................................ 37

F.4 Test report ...................................................................................................................................................... 39

Annex G (informative) Ageing test with high temperatures of REFS ...................................................... 40

G.1 Principle ........................................................................................................................................................... 40

G.2 Apparatus ........................................................................................................................................................ 40

G.2.1 Climatic chamber. ......................................................................................................................................... 40

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G.2.2 REFS test sample ........................................................................................................................................... 40

G.3 Procedure........................................................................................................................................................ 40

G.4 Test report ...................................................................................................................................................... 41

Bibliography ................................................................................................................................................................. 42

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oSIST prEN 17682:2021
prEN 17682:2021 (E)
European foreword

This document (prEN 17682:2021) has been prepared by Technical Committee CEN/TC 256 “Railway

applications”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
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oSIST prEN 17682:2021
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Introduction

In a track for railway vehicles, the Resilient Element for Floating Slab (REFS) is a product which is placed

between the substructure and the ballastless track. This document applies to the performance-related

properties of these elements.
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oSIST prEN 17682:2021
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1 Scope

This document is applicable to Resilient Element for Floating Slab system (REFS) – Elements used in

floating slab and defines the test procedures and their acceptance criteria.

The document covers not only those parameters related to the effectiveness of a track structure in

mitigating vibrations, that is, to reduce the emission of vibrations and structure-borne noise, but also the

parameters that are needed for the static analysis and for the verification of track safety.

Floating slab track systems in the form of track base plates and track troughs are individual solutions in

which there is considerable variation in the engineering design and the types of resilient elements used.

For this reason, a floating slab track system is always an individual engineering solution and therefore, it

is not possible to define all specific conditions for the resilient elements in the present document

The most typical types of resilient elements are:
— Full surface bearings,
— Strip bearings,
— Discrete bearings (including the helical steel spring element),
— Vertical bearings.
This document provides particular information in the following areas:

— tests methods, tests arrangements and evaluation criteria of Resilient Element for Floating Slab

system,
— data supplied by the purchaser and by the supplier,
— definition of general process of homologation,
— definition of routine tests.
This document defines the specific test procedures for REFS:
— stiffness tests,
— fatigue tests,
— severe environmental condition test.

This document also sets out procedures for testing fitness for purpose and provides information on

quality monitoring as part of quality assurance procedures. This document does not, however, contain

requirements pertaining to the functions of Resilient Element for Floating Slab system. It is the

responsibility of the purchaser to define these requirements and to choose the optional tests.

This document is not applicable for fastening system and for booted concrete block and sleeper

completed with boots covered by EN 13481-5.
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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 ISO 7500-1, Metallic materials - Calibration and verification of static uniaxial testing machines – Part 1:

Tension/compression testing machines – Calibration and verification of the force-measuring system

(ISO 7500-1)

EN ISO 9513:2012, Metallic materials - Calibration of extensometer systems used in uniaxial testing (ISO

9513:2012)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
floating slab system

track system where a designed elasticity by resilient element is introduced between the ballastless track

system or trough slab and its substructure
3.2
Resilient Element for Floating Slab system (REFS)

product of resilient material installed in the floating slab system including all integral parts of the product

in order to mitigate vibrations
3.3
full surface bearing

resilient element arranged as a mat in between the floating slab and its substructure to provide

continuous elastic support of the floating slab
3.4
strip bearing

resilient element arranged as a strip in between the floating slab and its substructure to provide

continuous longitudinal elastic support of the floating slab. Continuous means any longitudinal gap

between 2 strips is less than 10% of one strip length, and not larger than strip width. Exceptions only

because of the construction requirement: i.e. Drainage
3.5
discrete bearing

resilient element arranged as a point support in between floating slab and its substructure to provide

discontinuous elastic support of the floating slab (including helical steel spring element), with designed

spacing between them over 10% of their length

Note 1 to entry: helical steel spring element, consisting of a helical steel spring according to EN 13906-1 and a

viscous or a solid damping system assembled in one device.
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3.6
vertical bearing

vertical resilient element for floating slab system in order to constrain the horizontal movements

3.7
stiffness
force per unit deflection, measured under a uniaxial force
3.8
bedding modulus

compressive stress (force per unit area) per unit deflection, measured under a uniaxial force

3.9
static stiffness or static bedding modulus
force or stress per unit deflection measured under a uniaxial static load
3.10
dynamic stiffness or dynamic bedding modulus

force or stress per unit deflection measured under a uniaxial force which acts periodically at a given

frequency of (5 – 20) Hz around between specific force or stress levels

Note 1 to entry: This value is determined mainly for calculation of dynamic deformation of tracks.

3.11
acoustic stiffness

dynamic stiffness of an elastic track support component that is measured under a static preload and at

small amplitudes of displacement or velocity applied in the frequency range relevant to noise or vibration

perception
3.12
mitigation of ground-borne noise and vibration

reduction of mechanical vibration and/or ground-borne noise into the surroundings

Note 1 to entry: REFS has no direct influence on noise-mitigation only in some indirect cases e.g. mitigate the

reradiated sound from bridge-structures.”
3.13
general design approval tests

tests performed to demonstrate the compliance of the product properties with the requirements, for

standard dimensions
3.14
project design approval tests

tests performed to demonstrate the compliance of the product properties with the requirements for a

specific project, set by the purchaser
3.15
routine tests

tests performed to demonstrate the compliance of the product properties to the quality plan, set by the

supplier
3.16
purchaser

operator or user of the equipment, or the customer of the material on the user’s behalf

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3.17
supplier
company /body responsible for the execution of purchaser’s requirements

Note 1 to entry: This can be the manufacturer or his designated representative, stockist, distributer, or agent. The

supplier is responsible for the use of the EN in response to the purchaser’s requirements and will ensure all local

conditions of purchase requirements are satisfied.
3.18
manufacturer

organization responsible for blending and processing material constituents, integrating them in the

manufacturing process and subsequently cutting, stamping or moulding to final dimensions

4 Symbols and abbreviations
Table 1 — Symbols
Symbols Characterization Units
A area mm
C bedding modulus N/mm
d displacement mm
Δ variation -
F force kN
f frequency Hz
k stiffness N/mm
m mass kg
η loss factor -
stiffening ratio between dynamic bedding modulus and static bedding
κ -
modulus
σ stress (compressive or tensile) N/mm
Φ dynamic coefficient -
R roughness mm
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oSIST prEN 17682:2021
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Table 2 — Indices of the symbols
Indices Characterization
0 minimum load
i Hz value of frequency in measurement
af after
be before
dyn dynamic
A acoustic (bedding modulus)
h horizontal
max maximum
min minimum
i sequential number in order to differentiate types of measurements
stat static
tend tendency
test test load
v vertical
a arithmetic mean value
c cycles
M million
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5 Loads applied to the REFS

As a floating slab track system is always an individual engineering solution for a particular application, it

is not possible to specify generally applicable load ranges for the resilient elements.

The purchaser shall define the different loads (force or pressure) acting on one resilient element of the

REFS:

F or σ (minimum load): Dead load of the slab including rails, rail fastenings, without

0 0
safety factor.
F or σ (service load): Minimum load (F or σ ) plus the product of the dynamic
1 1 0 0
coefficient (vibration coefficient) Φ and the applicable
vertical live load (F or σ ) on curved or straight track.
PV PV

F or σ (evaluation load for slab Minimum load (F or σ ) plus the product of the dynamic

2 2 0 0
design): coefficient Φ and the applicable vertical live load (F or
PVB
σ ) exerted by the reference vehicle, or plus the product of
PVB
the dynamic coefficient Φ and the load model used for the
verification of slab safety

F or σ (maximum load for slab 1,35 σ plus 1,5 times the product of the dynamic coefficient

3 3 0
design): Φ and the applicable vertical live load (F or σ ) exerted
PVB PVB
by the reference vehicle, or plus 1,45 times the product of
the dynamic coefficient Φ and the load model used for the
verification of track safety
F or σ (minimum load): Horizontal load resulting from the gravitational force
h0 h0
component acting parallel to the lateral or longitudinal
inclination in the concrete base and from the superelevation
of the curve of the track slab support layer
F or σ (service load): Minimum load σ plus the horizontal live load σ
h1 h1 h0 PH
generated by the vehicles used for regular scheduled
services

F or σ (evaluation load): Minimum load σ h0 plus the horizontal live load σ of the

h2 h2 PHB
reference vehicle or the horizontal live load of the load
model used in the verification of track safety

F or σ (maximum load): 1,35 σh0 plus 1,5 times the horizontal live load σ of the

h3 h3 PHB
reference vehicle, or plus 1,45 times the horizontal live load
of the load model used in the verification of track safety

NOTE 1 The dynamic coefficient Φ incorporates the additional dynamic effects associated with the passage of

the vehicle. Currently, a dynamic coefficient of Φ = 1,3 is used for running speeds up to 200 km/h

NOTE 2 The applicable vertical live load PV is determined by the axle loads of the vehicles used for regular

scheduled services

NOTE 3 In the case of tramways, urban light rail systems and underground railways, the live load P of the

reference vehicle is assumed to be the most unfavourable loading scenario generated by the regular scheduled

services or by any special-purpose vehicles. For suburban rapid transit systems and main-line railways, the load

model LM 71 as defined in EN 1991-2 is generally assumed for verifications of track safety.

NOTE 4 The horizontal live load of a railway vehicle comprises the centrifugal forces, the transverse impact

(nosing force), and the braking and accelerating forces. The horizontal live load does not contain any surcharges

(loading factors), i.e. it does not contain a dynamic coefficient (vibration coefficient). The centrifugal force is

calculated for σ from the axle loads of the vehicle used for regular scheduled service while taking account of the

relevant track curve radius and track curve speed. Values assumed for σ and F are based on the reference vehicle

h2 h3
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or the load model applied in the verification of track safety rather than on the vehicle used for regular scheduled

service.

NOTE 5 The factor of 1,5 is the partial safety factor in EN 1990; the factor of 1,45 is the partial safety factor in

DIN-Fachbericht 101. The partial safety factor refers to the loads applied and not to the type of structural supporting

structure to be calculated.
6 Samples dimensions
Table 3 — Samples dimensions for general/project design approval tests
Bearings Dimensions
full surface
300x300mm with the thickness of the bearing defined by the supplier
bearings
300mm length x “width of the bearing (maximum 300mm)” and the thickness of the
strip bearings
bearing

discrete dimensions of the discrete bearing or helical steel spring elements (the whole element

bearings consisting of steel spring and viscous or solid damping system should be considered)

vertical dimensions in function of type (full surface, strip or discrete) of bearings used in the

bearings project

It is recommended for discrete bearings and vertical bearings to use samples dimensions for general

design approval tests: 300x300mm.

In the case of resilient elements with studs or other geometrically deformable structures, the dimensions

(close to 300x300mm and maximum 320x320mm) of the test object shall be modified accordingly.

7 Design approval tests and routine tests
7.1 General

This clause defines the test objectives and requested information about the REFS.

The purchaser should define the accepted laboratories.

In order to be able to identify REFS at a later date, the following values shall be indicated:

— the specific mass of the product and all its components, see 7.3.1;

— the results of a suitable material analysis as selected by the manufacturer and approved by the

purchaser.
The sup
...

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