Railway applications - Suspension components - Air spring control elements

This standard specifies:
- the characteristics the air brake control elements shall have and the tests to be carried out;
- the guidelines for drafting the approval procedure applied by the customer;
- the guidelines for drafting the qualification procedure for the product based on the requirements
specified;
- the guidelines for drafting the quality surveillance provisions for the manufacture of the air spring
control elements.
The requirements of this standard are applicable to air spring control elements having to equip rail vehicles
operating on a reserved track under permanent guidance without any distinction between the nature or the
route of the track.
It covers complete control elements. It is essential that the various components are defined by particular
specifications.
This standard specifies:
- the differential valves;
- the filters;
- the levelling valves;
- the non-return valves;
- the minimum pressure valves;
- the pressure-reducing valves;
- the end stop valves;
- the isolating valves.
This standard does not take into account the other air suspension control elements such as the installation of
pipes, pipework elements and air production elements.

Bahnanwendungen - Federungselemente - Luftfedersteuerglieder

Diese Europäische Norm legt folgende Anforderungen fest:
-   die Eigenschaften von Luftfedersteuergliedern und die Prüfungen, die durchgeführt werden sollten;
-   das Abnahmeverfahren, das vom Kunden angewandt wird;
-   das Qualifikationsverfahren für das Produkt auf der Grundlage der festgelegten Anforderungen;
-   die Vorkehrungen hinsichtlich der Qualitätsüberwachung für die Herstellung der Luftfedersteuerglieder;
Die Anforderungen dieser Europäischen Norm gelten für Luftfedersteuerglieder für die Ausrüstung von Schienenfahrzeugen, die auf einem gesonderten Gleis unter ständiger Überwachung ohne Unterscheidung der Art oder des Verlaufs der Strecke verkehren.
Sie behandelt vollständige Steuerglieder. Es ist notwendig, dass die einzelnen Bestandteile durch gesonderte Spezifikationen beschrieben werden.
Diese Europäische Norm legt fest:
-   Ausgleichsventile;
-   Filter;
-   Niveauregulierventile (Luftfederventile);
-   Rückschlagventile;
-   Überdruckventil;
-   Druckminderventile;
-   End-Absperrventile;
-   Absperrventile.
Diese Europäische Norm berücksichtigt nicht die anderen Luftfedersteuerglieder wie z. B. Leitungen, Leitungsteile, Kompressoren sowie deren Installation.

Applications ferroviaires - Pieces de suspension - Eléments de commande de ressort pneumatique

Železniške naprave – Vzmetenje – Kontrolni elementi pri zračnih vzmeteh

General Information

Status
Published
Publication Date
30-Sep-2006
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Oct-2006
Due Date
01-Oct-2006
Completion Date
01-Oct-2006

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.]PHWHKBahnanwendungen - Federungselemente - LuftfedersteuergliederApplications ferroviaires - Pieces de suspension - Eléments de commande de ressort pneumatiqueRailway applications - Suspension components - Air spring control elements45.040Materiali in deli za železniško tehnikoMaterials and components for railway engineering21.160VzmetiSpringsICS:Ta slovenski standard je istoveten z:EN 14817:2006SIST EN 14817:2006en01-oktober-2006SIST EN 14817:2006SLOVENSKI

STANDARD
SIST EN 14817:2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14817April 2006ICS 45.040 English VersionRailway applications - Suspension components - Air springcontrol elementsApplications ferroviaires - Pièces de suspension - Elémentsde commande de ressort pneumatiqueBahnanwendungen - Federungselemente -LuftfedersteuergliederThis European Standard was approved by CEN on 9 January 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14817:2006: ESIST EN 14817:2006

EN 14817:2006 (E) 2 Contents Page Foreword..............................................................................................................................................................4 Introduction.........................................................................................................................................................5 1 Scope......................................................................................................................................................6 2 Normative references............................................................................................................................7 3 Terms, definitions, symbols and abbreviations.................................................................................7 3.1 Terms and definitions...........................................................................................................................7 3.2 Symbols and abbreviations..................................................................................................................8 4 Documentation.......................................................................................................................................9 4.1 Introduction............................................................................................................................................9 4.2 Documents to be provided by the customer......................................................................................9 4.3 Documents to be provided by the supplier.........................................................................................9 5 Graphical symbols...............................................................................................................................10 6 Working conditions.............................................................................................................................11 6.1 General..................................................................................................................................................11 6.2 Climatic and atmospheric condition..................................................................................................12 6.3 Environmental conditions...................................................................................................................12 6.4 Operation..............................................................................................................................................12 6.5 Mechanical conditions........................................................................................................................12 7 Product definition................................................................................................................................12 7.1 General..................................................................................................................................................12 7.2 Resistance to operating conditions...................................................................................................14 7.2.1 Extreme temperatures.........................................................................................................................14 7.2.2 Water penetration................................................................................................................................15 7.2.3 Penetration of external solid bodies..................................................................................................15 7.2.4 Mechanical impacts.............................................................................................................................16 7.2.5 Projection of ballast............................................................................................................................17 7.2.6 Corrosion..............................................................................................................................................17 7.2.7 Reaction to fire.....................................................................................................................................17 7.2.8 Other conditions..................................................................................................................................17 7.3 Physical characteristics......................................................................................................................17 7.3.1 Material.................................................................................................................................................17 7.3.2 Mass......................................................................................................................................................17 7.3.3 Appearance..........................................................................................................................................18 7.3.4 Air-tightness.........................................................................................................................................18 7.3.5 Fatigue behaviour................................................................................................................................18 7.4 Geometrical and dimensional characteristics..................................................................................18 7.5 Functional characteristics..................................................................................................................18 7.5.1 General..................................................................................................................................................18 7.5.2 Air flow..................................................................................................................................................18 7.5.3 Pressure drop.......................................................................................................................................19 7.5.4 Filtering performance..........................................................................................................................19 7.5.5 Operating pressure..............................................................................................................................19 8 Verification and test methods............................................................................................................19 8.1 General..................................................................................................................................................19 8.1.1 Test conditions....................................................................................................................................19 8.1.2 Test installation....................................................................................................................................19 8.1.3 Definition and preparation of test pieces..........................................................................................20 SIST EN 14817:2006

EN 14817:2006 (E) 3 8.2 Verification of resistance to the operating conditions....................................................................20 8.2.1 Extreme temperatures.........................................................................................................................20 8.2.2 Water penetration................................................................................................................................20 8.2.3 Penetration of external solid bodies.................................................................................................21 8.2.4 Mechanical impacts.............................................................................................................................21 8.2.5 Projection of ballast............................................................................................................................23 8.2.6 Corrosion..............................................................................................................................................23 8.2.7 Reaction to fire....................................................................................................................................23 8.2.8 Other conditions..................................................................................................................................23 8.3 Verification of physical characteristics.............................................................................................23 8.3.1 Material.................................................................................................................................................23 8.3.2 Mass......................................................................................................................................................23 8.3.3 Appearance..........................................................................................................................................23 8.3.4 Air-tightness........................................................................................................................................23 8.3.5 Fatigue behaviour................................................................................................................................23 8.4 Verification of geometrical and dimensional characteristics.........................................................23 8.5 Verification of functional characteristics..........................................................................................24 8.5.1 General.................................................................................................................................................24 8.5.2 Air flow..................................................................................................................................................24 8.5.3 Pressure drop......................................................................................................................................24 8.5.4 Filtering performance..........................................................................................................................24 8.5.5 Operating pressure.............................................................................................................................24 9 Marking.................................................................................................................................................24 Annex A (informative)

Traceability, qualification and quality surveillance................................................26 A.1 Traceability...........................................................................................................................................26 A.2 Qualification of the supplier's production factory...........................................................................26 A.3 Product approval and qualification...................................................................................................26 A.3.1 Approval...............................................................................................................................................26 A.3.2 Qualification.........................................................................................................................................26 A.4 Inspection and quality surveillance...................................................................................................27 Bibliography......................................................................................................................................................28

SIST EN 14817:2006

EN 14817:2006 (E) 4 Foreword This European Standard (EN 14817:2006) 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 October 2006, and conflicting national standards shall be withdrawn at the latest by October 2006. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Romania, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 14817:2006

EN 14817:2006 (E) 5 Introduction Designing an air spring control element initially requires knowledge of the mechanical system into which it is integrated.

From this come the performance requirements specific to each case that only the customer is able to specify. The requirements of the standard should be applied jointly to the supply conditions for the air spring control elements. This standard puts into concrete form the studies and work carried out to improve the performance and quality of the air spring control elements in order to meet the requirements of modern rail transport equipment.

This standard is intended for the users of rail networks, manufacturers and suppliers of rail equipment and suppliers of air brake control elements. SIST EN 14817:2006

EN 14817:2006 (E) 6 1 Scope This standard specifies: ¾ the characteristics the air brake control elements shall have and the tests to be carried out; ¾ the guidelines for drafting the approval procedure applied by the customer; ¾ the guidelines for drafting the qualification procedure for the product based on the requirements specified; ¾ the guidelines for drafting the quality surveillance provisions for the manufacture of the air spring control elements. The requirements of this standard are applicable to air spring control elements having to equip rail vehicles operating on a reserved track under permanent guidance without any distinction between the nature or the route of the track. It covers complete control elements.

It is essential that the various components are defined by particular specifications. This standard specifies: ¾ the differential valves; ¾ the filters; ¾ the levelling valves; ¾ the non-return valves;

¾ the minimum pressure valves; ¾ the pressure-reducing valves; ¾ the end stop valves; ¾ the isolating valves. This standard does not take into account the other air suspension control elements such as the installation of pipes, pipework elements and air production elements.

SIST EN 14817:2006

EN 14817:2006 (E) 7 2 Normative references The following referenced documents are indispensable for the application of this document.

For dated references, only the edition cited applies.

For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50102, Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code) EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) ISO 31-1, Quantities and units – Part 1: Space and time ISO 31-3, Quantities and units – Part 3: Mechanics ISO 1219-1, Fluid power systems and components – Graphic symbols and circuit diagrams – Part 1: Graphic symbols ISO 8573-1, Compressed air for general use – Part 1: Contaminants and quality classes ISO 9227, Corrosion tests in artificial atmospheres – Salt spray tests ISO 10209-1, Technical product documentation – Vocabulary - Part 1: Terms relating to technical drawings - General and types of drawings 3 Terms, definitions, symbols and abbreviations 3.1 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1.1 differential valve appliance whose basic function is to permit a flow of air between two air springs of the same bogie when their pressure differential is greater than a specified threshold

3.1.2 filter appliance whose basic function is to catch the pollutants in the compressed air

3.1.3 levelling valve appliance whose basic function is to maintain the height of an air spring at a predetermined constant value whatever the static load applied whilst admitting or discharging air

3.1.4 end stop valve appliance whose basic function is to limit the height of an air spring to a predetermined value by purging it rapidly into the atmosphere 3.1.5 minimum pressure valve appliance whose basic function is to admit an air flow in one single direction above a given pressure

SIST EN 14817:2006

EN 14817:2006 (E) 8 3.1.6 non-return valve appliance whose basic function is to admit an air flow in one single direction

3.1.7 pressure drop difference between the inlet pressure and outlet pressure of a control element at a given moment

3.1.8 pressure reducing valve appliance that supplies a relatively constant outlet pressure regardless of the inlet pressure and outlet air flow

NOTE It is essential that the inlet pressure, however, remains higher than the regulated outlet pressure. 3.1.9 isolating valve appliance whose basic function is to permit air to flow or not whatever the direction

3.1.10 isolating valve with vent hole appliance whose basic function is to permit air to flow in whatever direction or to oppose it by venting one part of the air circuit 3.2 Symbols and abbreviations For the purposes of this European Standard, the following symbols and abbreviations apply. Most of the symbols used in this standard and defined in this subclause conform to ISO 31-1 and ISO 31-3. Decimal multiples and sub-multiples of the units defined in Table 1 may be used. Table 1 — Symbols and abbreviations

Symbol Abbreviation Unit Explanation p Pa Absolute pressure. The value zero corresponds to an absolute vacuum. p1 Pa Inlet pressure. p2 Pa Outlet pressure. pamb Pa Ambient pressure outside the control element. Unless otherwise specified, pamb = pat. pat Pa Normal atmospheric pressure, with pat = 101325 Pa (»1 bar) pe Pa Effective pressure. Pressure equal to the algebraic difference between the absolute pressure inside the element (p) and the ambient pressure (pamb).

pe = p - pamb pmw Pa Maximum working pressure. Maximum absolute pressure to which the control element is subjected in service for a given

application. pop Pa Operating pressure. T °C Ambient temperature outside the control element. TEmax °C Upper limit of range of exceptional operating temperatures. TEmin °C Lower limit of range of exceptional operating temperatures. SIST EN 14817:2006

EN 14817:2006 (E) 9 TNmax °C Upper limit of range of normal operating temperatures. TNmin °C Lower limit of range of normal operating temperatures. TSmax °C Upper limit of range of stationary exposure temperatures. TSmin °C Lower limit of range of stationary exposure temperatures. DDDDp Pa Pressure drop. DDDDpm Pa Maximum allowable pressure drop. 4 Documentation 4.1 Introduction The element shall be defined in a technical specification comprising the following documents (see 4.2 and 4.3). The types of drawings are specified in ISO 10209-1. 4.2 Documents to be provided by the customer The customer shall prepare a technical specification comprising: a) an interface drawing (if possible, an assembly drawing of the mechanical system or a partial drawing) showing the following points at least; ¾ the space envelope; ¾ the functional dimensions and tolerances. b) technical data specifying the following points at least: ¾ the working conditions (temperatures, assembly, environment, maintenance, storage, etc.); ¾ the requirements (product characteristics, tolerances and desired service life); ¾ the content of the approval procedure and the type testing requirements (for example: characteristics to be verified and tests to be carried out, sequence of tests and verifications). 4.3 Documents to be provided by the supplier The supplier shall provide documentation describing the element and specifying: a) a specification drawing including at least: ¾ the overall dimensions; ¾ the position of the marking. b) a specification drawing (cross-section view) with a nomenclature; c) technical data specifying at least the necessary information on the control element (for example: assembly and maintenance instructions). SIST EN 14817:2006

EN 14817:2006 (E) 10 5 Graphical symbols The control elements shall be represented in the diagrams by the symbols given in Table 2. Table 2 — Graphical symbols Element Graphical symbol Differential valve

Filter
Levelling valve
Non-return valve
Pressure reducing valve
SIST EN 14817:2006
EN 14817:2006 (E) 11 Minimum pressure valve
End stop valve
Isolating valve
Isolating valve with vent hole

1) The control mode shall be represented in accordance with the rules in ISO 1219-1

6 Working conditions 6.1 General The control element shall ensure all the functions in the working and environmental conditions to which it is subjected in operation. These conditions shall be defined in the technical specification for the control element. SIST EN 14817:2006

EN 14817:2006 (E) 12 6.2 Climatic and atmospheric condition The variation in air temperature (ambient temperature) taken into account is generally between "- 25 °C and

+ 50 °C". However, a different range of temperatures may be used if the operating or geographic conditions are exceptional. 6.3 Environmental conditions Depending on its location on the vehicle and its operating conditions, the control element may be exposed to attacks from various sources: ¾ chemical products (cleaning products, for example); ¾ organic waste; ¾

oil; ¾ ballast; ¾ etc. 6.4 Operation The control element shall ensure without incident that all functions are operational when it is subjected to the maximum air circuit pressure in the specified operating conditions. The maximum working pressure (pmw) shall be defined in the technical specification. The vehicle air circuits may contain pollutants (dust, water, oil), The air quality shall be defined in the technical specification in accordance with ISO 8573-1. NOTE For the tests, the air quality is defined in 8.1.2. 6.5 Mechanical conditions

Depending on its location on the vehicle and its operating conditions, the control element may be exposed to mechanical stresses (vibration, impact, etc.). 7 Product definition 7.1 General The customer shall define in the technical specification all the necessary characteristics for defining the control element as a function of its operating and working conditions. These characteristics shall be selected from those listed in Tables 3 and 4. Unless specified otherwise, the control element shall meet the requirements for the characteristics marked by the symbol * in Table 3 and defined in this standard.

SIST EN 14817:2006
EN 14817:2006 (E) 13 Table 3 — Basic characteristics
CHARACTERISTIC

Definition of the characteristic (subclause) Verification and test method (subclause) Resistance to operating conditions

Extreme temperatures **** 7.2.1 8.2.1 Water penetration **** 7.2.2 8.2.2 Penetration of external solid bodies **** 7.2.3 8.2.3 Mechanical impacts **** 7.2.4 8.2.4 Projections of ballast

7.2.5 8.2.5 Corrosion **** 7.2.6 8.2.6 Reaction to fire
7.2.7 8.2.7 Other conditions
7.2.8 8.2.8 Physical characteristics

Material **** 7.3.1 8.3.1 Mass **** 7.3.2 8.3.2 Appearance **** 7.3.3 8.3.3 Air-tightness **** 7.3.4 8.3.4 Fatigue behaviour

7.3.5 8.3.5 Geometrical and dimensional characteristics **** 7.4 8.4 Table 4 — Functional characteristics

CHARACTERISTIC
Air flow Pressure drop Filtering performance

Operating pressure Definition of the characteristic (subclause) 7.5.2 7.5.3 7.5.4 7.5.5 Verification and test method (subclause) 8.5.2 8.5.3 8.5.4 8.5.5 Differential valve Recommended

Obligatory Filter Obligatory Recommended Obligatory
Levelling valve Obligatory
Non-return valve Obligatory Recommended
Pressure-reducing valve Obligatory
Obligatory Minimum pressure valve Obligatory
Obligatory End stop valve Obligatory
Isolating valve Obligatory
Isolating valve with vent hole Obligatory
SIST EN 14817:2006

EN 14817:2006 (E) 14 7.2 Resistance to operating conditions 7.2.1 Extreme temperatures The ranges of ambient temperatures the control element shall withstand shall be defined in the technical specification. There are three conditions specified in Table 5. Table 5 — Temperature ranges

Condition Temperature range Definition A TNmin to TNmax Subjected to any temperature in this range, all the nominal values of the control element characteristics shall be met. B TEmin to TNmin and TNmax to TEmax Subjected to any temperature in this range, the control element shall function without incident. Evolution of the characteristics is allowed as long as this does not cause any malfunction of the air suspension. Therefore, the specific requirements to ensure correct functioning of the air suspension shall be defined in the technical specification. C TSmin to TEmin and TEmax to TSmax When the control element is not being used (for example: storage, prolonged immobilization of the vehicle), it shall withstand any temperature in this range without deterioration. Its characteristics shall return as soon as conditions A and B are attained.

The extreme temperatures shall be specified in the technical specification.
Otherwise, the following values shall be considered:
TSmax =
+ 70 °C; ¾ TEmax =
+ 50 °C; ¾ TNmax =
+ 35 °C; ¾ TNmin =
+ 5 °C; ¾ TEmin =
- 15 °C; ¾ TSmin =

- 25 °C. For conditions A and B, the technical specification shall specify the characteristics to be verified and the corresponding values. SIST EN 14817:2006

EN 14817:2006 (E) 15 7.2.2 Water penetration The control element shall be watertight. Penetration of water into the control element may be allowed if it does not cause malfunction of the element itself or of the assembly of which it is a part. In this case, the acceptance criteria shall be the subject of an agreement between the customer and the supplier. Table 6 gives, for each protection level, the definition of the protection against water penetration of the assembled control element under operating conditions. The level of protection against water penetration shall be defined in the technical specification by specifying the alphanumerical symbol Hi.

Otherwise, protection level H1 applies. Table 6 — Protection against water penetration

Symbol Hi Definition H1 The control element shall be watertight when subjected to drops of water falling perpendicularly. H2 The control element, inclined + 15 degrees - 15 degrees relative to its operating position, shall be watertight when subjected to drops of water falling perpendicularly. H3 The control element shall be watertight when subjected to water falling as fine rain. H4 The control element shall be watertight when subjected to water splashes. H5 The control element shall be watertight when subjected to a water jet. H6 The control element shall be watertight when subjected to a powerful water jet.

7.2.3 Penetration of external solid bodies The expression "external solid bodies" applies to any body, material, particle etc. that is not part of the control element. The presence of external solid bodies inside the control element is not allowed. Penetration of external solid bodies into the control element may be allowed if it does not cause a malfunction of the element itself or of the assembly of which it is a part. In this case, the acceptance criteria shall be th

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