EN ISO 22074-6:2024

Railway infrastructure - Rail fastening systems - Part 6: Test method for resistance to severe environmental conditions (ISO 22074-6:2021)

This document specifies a laboratory test procedure for finding the effect of exposure to severe environmental conditions on the fastening system.
This test procedure applies to a complete fastening assembly including embedded rail with mechanical fastenings. It is not applicable to embedded rail systems relying on adhesive components to secure the rail.

Bahninfrastruktur - Schienenbefestigungssysteme - Teil 6: Prüfverfahren für die Beständigkeit gegen extreme Umwelteinflüsse (ISO 22074-6:2021)

Infrastructure ferroviaire - Systèmes de fixation du rail - Partie 6: Méthode d'essai pour la détermination de résistance aux conditions environnementales sévères (ISO 22074-6:2021)

Le présent document spécifie une procédure d'essai en laboratoire pour déterminer l'effet de l'exposition à des conditions environnementales sévères sur le système de fixation.
Cette procédure d'essai s'applique à un système de fixation complet, y compris un rail enrobé avec fixations mécaniques. Elle ne s'applique pas aux systèmes de rails enrobés qui s'appuient sur des composants adhésifs pour fixer le rail.

Železniška infrastruktura - Sistemi za pritrjevanje tirnic - 6. del: Preskusna metoda za odpornost na izredne okoljske razmere (ISO 22074-6:2021)

Ta dokument določa laboratorijski preskusni postopek za ugotavljanje učinka izpostavljenosti izrednim okoljskim razmeram na pritrdilni sistem.
Ta preskusni postopek se uporablja za celoten pritrdilni sestav, vključno z vgrajeno tirnico z mehanskim pritrjevanjem. Ne uporablja se za sisteme za vgrajene tirnice, ki uporabljajo lepilne komponente za pritrjevanje tirnice.

General Information

• Status: Published
• Publication Date: 26-Mar-2024
• ICS: 45.080 - Rails and railway components
• Technical Committee: CEN/TC 256 - Railway applications
• Drafting Committee: CEN/TC 256/SC 1/WG 17 - Fastening systems
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 27-Mar-2024
• Due Date: 24-Nov-2025
• Completion Date: 27-Mar-2024
• Ref Project: SIST EN ISO 22074-6:2024 - Railway infrastructure - Rail fastening systems - Part 6: Test method for resistance to severe environmental conditions (ISO 22074-6:2021)

Relations

• Replaces: EN 13146-6:2012 - Railway applications - Track - Test methods for fastening systems - Part 6: Effect of severe environmental conditions
• Effective Date: 17-Dec-2025

Overview

EN ISO 22074-6:2024 (ISO 22074-6:2021) specifies a laboratory test method for assessing the resistance of rail fastening systems to severe environmental conditions. The procedure evaluates the effect of accelerated corrosive exposure on a complete fastening assembly (including an embedded rail and mechanical fastenings) by subjecting specimens to a neutral salt spray (NSS) test and recording ease of dismantling, reassembly and component condition. This standard applies to mechanical fastening systems only and is not applicable to systems that rely on adhesive components.

Key topics and requirements

• Scope: Laboratory procedure for complete fastening assemblies mounted on a sleeper, bearer or ballastless track element with a short length of rail.
• Test principle: Expose the assembled fastening to a neutral salt spray in accordance with ISO 9227 and record effects on function and appearance.
• Exposure duration: Neutral salt spray test for 300 hours (as specified in the document).
• Apparatus:
  • Salt spray equipment conforming to ISO 9227 (NSS).
  • Manual tools normally used to install/remove the clamping device.
• Procedure:
  • Visual inspection and documentation of initial condition.
  • Assemble rail and fastening on the chosen support.
  • Subject specimen to NSS.
  • Attempt dismantling and reassembly using provided tools; visually inspect components and record any degradation or failures.
• Test report content (minimum required information):
  • Reference to ISO 22074-6:2021, laboratory details, test date.
  • Description of the fastening assembly, specimen origin, support, rail section and tools used.
  • Changes in appearance of components and any failure to dismantle/reassemble.

Applications and users

This standard is practical for:

• Rail infrastructure engineers and maintenance planners assessing corrosion resistance and maintainability of rail fastenings.
• Fastening system manufacturers and R&D teams conducting product qualification or comparative testing.
• Test laboratories performing accredited salt spray corrosion testing on rail components.
• Procurement and specification authors seeking objective, standardized test evidence for performance under severe environmental conditions (coastal, industrial, or contaminated environments).

Benefits include improved product selection, safer maintenance procedures, validated lifecycle expectations and clearer conformity evidence for procurement and certification.

Related standards

• ISO 22074-1 - Vocabulary for rail fastening systems.
• ISO 9227 - Corrosion tests in artificial atmospheres - Salt spray tests (NSS).
• Adopted as EN ISO 22074-6:2024 by CEN (European national standards implementation).

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2024
Železniška infrastruktura - Sistemi za pritrjevanje tirnic - 6. del: Preskusna metoda
za odpornost na izredne okoljske razmere (ISO 22074-6:2021)
Railway infrastructure - Rail fastening systems - Part 6: Test method for resistance to
severe environmental conditions (ISO 22074-6:2021)
Bahninfrastruktur - Schienenbefestigungssysteme - Teil 6: Prüfverfahren für die
Beständigkeit gegen extreme Umwelteinflüsse (ISO 22074-6:2021)
Infrastructure ferroviaire - Systèmes de fixation du rail - Partie 6: Méthode d'essai pour la
détermination de résistance aux conditions environnementales sévères (ISO 22074-
6:2021)
Ta slovenski standard je istoveten z: EN ISO 22074-6:2024
ICS:
45.080 Tračnice in železniški deli Rails and railway
components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 22074-6
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2024
EUROPÄISCHE NORM
ICS 45.080
English Version
Railway infrastructure - Rail fastening systems - Part 6:
Test method for resistance to severe environmental
conditions (ISO 22074-6:2021)
Infrastructure ferroviaire - Systèmes de fixation du rail Bahninfrastruktur - Schienenbefestigungssysteme -
- Partie 6: Méthode d'essai pour la détermination de Teil 6: Prüfverfahren für die Beständigkeit gegen
résistance aux conditions environnementales sévères extreme Umwelteinflüsse (ISO 22074-6:2021)
(ISO 22074-6:2021)
This European Standard was approved by CEN on 23 March 2024.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

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

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22074-6:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 22074-6:2021 has been prepared by Technical Committee ISO/TC 269 “Railway
applications” of the International Organization for Standardization (ISO) and has been taken over as
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 September 2024, and conflicting national standards
shall be withdrawn at the latest by September 2024.
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.
Endorsement notice
The text of ISO 22074-6:2021 has been approved by CEN as EN ISO 22074-6:2024 without any
modification.
INTERNATIONAL ISO
STANDARD 22074-6
First edition
2021-03
Railway infrastructure — Rail
fastening systems —
Part 6:
Test method for resistance to severe
environmental conditions
Infrastructure ferroviaire — Systèmes de fixation du rail —
Partie 6: Méthode d'essai pour la détermination de résistance aux
conditions environnementales sévères
Reference number
ISO 22074-6:2021(E)
©
ISO 2021
ISO 22074-6:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2021 – All rights reserved

ISO 22074-6:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references .
...