CEN/TC 256/SC 3/WG 55 - Guidance for simulation requirements into railway standards
The aim of this WG is to help CEN/CENELEC Working Group convenors and experts to promote/develop simulation in their standards as an alternative to full-scale physical tests for proving conformity. It can also provide useful guidance to assessors in the railway sector in approving simulations where they are not yet specifically defined or where full-scale tests are not defined in standards. Consequently, this document is also relevant to companies developing and applying simulations with the intention to achieve their acceptance for the purpose of system validation. . It is not intended to provide technical guidance on applying simulations in general. Where simulations are already introduced in existing standards, this guide is not intended to modify the specified requirements. However, technical harmonisation between standards might benefit from this guide for the introduction of additional alternative methods for simulations.
Guidance for simulation requirements into railway standards
The aim of this WG is to help CEN/CENELEC Working Group convenors and experts to promote/develop simulation in their standards as an alternative to full-scale physical tests for proving conformity. It can also provide useful guidance to assessors in the railway sector in approving simulations where they are not yet specifically defined or where full-scale tests are not defined in standards. Consequently, this document is also relevant to companies developing and applying simulations with the intention to achieve their acceptance for the purpose of system validation. . It is not intended to provide technical guidance on applying simulations in general. Where simulations are already introduced in existing standards, this guide is not intended to modify the specified requirements. However, technical harmonisation between standards might benefit from this guide for the introduction of additional alternative methods for simulations.
General Information
Frequently Asked Questions
CEN/TC 256/SC 3/WG 55 is a Subcommittee within the European Committee for Standardization (CEN). It is named "Guidance for simulation requirements into railway standards" and is responsible for: The aim of this WG is to help CEN/CENELEC Working Group convenors and experts to promote/develop simulation in their standards as an alternative to full-scale physical tests for proving conformity. It can also provide useful guidance to assessors in the railway sector in approving simulations where they are not yet specifically defined or where full-scale tests are not defined in standards. Consequently, this document is also relevant to companies developing and applying simulations with the intention to achieve their acceptance for the purpose of system validation. . It is not intended to provide technical guidance on applying simulations in general. Where simulations are already introduced in existing standards, this guide is not intended to modify the specified requirements. However, technical harmonisation between standards might benefit from this guide for the introduction of additional alternative methods for simulations. This committee has published 2 standards.
CEN/TC 256/SC 3/WG 55 develops CEN standards in the area of Information technology. The scope of work includes: The aim of this WG is to help CEN/CENELEC Working Group convenors and experts to promote/develop simulation in their standards as an alternative to full-scale physical tests for proving conformity. It can also provide useful guidance to assessors in the railway sector in approving simulations where they are not yet specifically defined or where full-scale tests are not defined in standards. Consequently, this document is also relevant to companies developing and applying simulations with the intention to achieve their acceptance for the purpose of system validation. . It is not intended to provide technical guidance on applying simulations in general. Where simulations are already introduced in existing standards, this guide is not intended to modify the specified requirements. However, technical harmonisation between standards might benefit from this guide for the introduction of additional alternative methods for simulations. Currently, there are 2 published standards from this subcommittee.
The European Committee for Standardization (CEN) is a public standards organization that brings together the national standardization bodies of 34 European countries. CEN provides a platform for developing European Standards (ENs) and other technical documents in relation to various products, materials, services, and processes, supporting the European Single Market.
A Subcommittee (SC) in CEN operates under a Technical Committee and focuses on a specific subset of the TC's scope. Subcommittees develop standards and technical specifications in their specialized area, reporting to their parent Technical Committee. They may also have working groups for detailed technical work.
The aim of this document is to help CEN/CENELEC Working Group convenors and experts to promote/develop simulation in their standards as an alternative to physical tests on the real system for proving conformity. It can also provide useful guidance to assessors in the railway sector in approving simulations where they are not yet specifically defined or where physical tests on the real system are not defined in standards. Consequently, this document is also relevant to companies developing and applying simulations with the intention to achieve their acceptance for the purpose of system validation. It is not intended to provide technical guidance on applying simulations in general.
Where simulations are already introduced in existing standards, this guide is not intended to modify the specified requirements. However, technical harmonisation between standards might benefit from this guide for the introduction of additional alternative methods for simulations.
This document principally covers:
• Numerical simulation, using complex methods or using simple spreadsheets methods
• Hardware and software in the loop
• Mathematical models solved using numerical methods or iteration, including spreadsheets.
It does not cover the following, although the general principles outlined can be applied to these methods:
• Laboratory tests of components
• Fatigue rig tests
• Model scale tests
• Mathematical models solved analytically.
NOTE: Due to the limited experience in the railway sector in the application of data-based (as opposed to model-based) simulations, for example using artificial intelligence (AI), neural networks, big data, etc., this approach is not further developed at this stage in this document.
- Technical report20 pagesEnglish languagee-Library read for1 day
This document sets out a framework to replace and/or complement physical tests with virtual tests by introducing simulation credibility for a given railway application. This covers simulation development, use, and management.
Users of this document can be:
- simulation engineers or organizations and their subcontractors,
- standardization working groups to introduce simulations in their standards or
- technical assessors and conformity assessment bodies.
This document provides guidance, particularly when simulations are not yet defined. Where applicable, this document can be used in conjunction with existing standards pertaining to the use of simulations.
If simulation is already recognized in existing domain-specific standards, this document does not modify the requirements of those standards. However, it may assist in future improvements and harmonization. It does not provide domain-specific guidance on applying simulations.
For the use of technologies including, but not limited to, artificial intelligence, model-scale testing, and distributed computing, relevant potential technology based risks can arise.
- Draft27 pagesEnglish languagee-Library read for1 day