CLC/TR 50506-1:2007
(Main)Railway applications - Communication, signalling and processing systems - Application Guide for EN 50129 - Part 1: Cross-acceptance
Railway applications - Communication, signalling and processing systems - Application Guide for EN 50129 - Part 1: Cross-acceptance
This application guide for cross-acceptance is a Technical Report about the basic standard. It is applicable to the same systems and addresses the same audience as the standard itself. It provides additional information on the application of EN 50129 to cross-acceptance. Therefore it deals with the acceptance by a safety authority of a previously accepted system or product in a different environment and/or context, often referred to as cross-acceptance. It is mainly dedicated to safety assessors, safety authorities, validators, and safety managers. In drafting this guide, it is assumed that the reader is familiar with the basic structure of the standard.
Železniške naprave - Komunikacijski, signalni in procesni sistemi – Navodilo za uporabo EN 50129 – 1. del: Križni sprejem
General Information
- Status
- Withdrawn
- Publication Date
- 03-May-2007
- Technical Committee
- CLC/TC 9X - Electrical and electronic applications for railways
- Drafting Committee
- CLC/SC 9XA - Communications, signalling and processing systems
- Parallel Committee
- IEC/TC 9 - IEC_TC_9
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 24-Oct-2018
- Completion Date
- 23-Sep-2025
Relations
- Effective Date
- 27-Nov-2018
Frequently Asked Questions
CLC/TR 50506-1:2007 is a technical report published by CLC. Its full title is "Railway applications - Communication, signalling and processing systems - Application Guide for EN 50129 - Part 1: Cross-acceptance". This standard covers: This application guide for cross-acceptance is a Technical Report about the basic standard. It is applicable to the same systems and addresses the same audience as the standard itself. It provides additional information on the application of EN 50129 to cross-acceptance. Therefore it deals with the acceptance by a safety authority of a previously accepted system or product in a different environment and/or context, often referred to as cross-acceptance. It is mainly dedicated to safety assessors, safety authorities, validators, and safety managers. In drafting this guide, it is assumed that the reader is familiar with the basic structure of the standard.
This application guide for cross-acceptance is a Technical Report about the basic standard. It is applicable to the same systems and addresses the same audience as the standard itself. It provides additional information on the application of EN 50129 to cross-acceptance. Therefore it deals with the acceptance by a safety authority of a previously accepted system or product in a different environment and/or context, often referred to as cross-acceptance. It is mainly dedicated to safety assessors, safety authorities, validators, and safety managers. In drafting this guide, it is assumed that the reader is familiar with the basic structure of the standard.
CLC/TR 50506-1:2007 is classified under the following ICS (International Classification for Standards) categories: 93.100 - Construction of railways. The ICS classification helps identify the subject area and facilitates finding related standards.
CLC/TR 50506-1:2007 has the following relationships with other standards: It is inter standard links to EN 50129:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase CLC/TR 50506-1:2007 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CLC standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2007
Železniške naprave - Komunikacijski, signalni in procesni sistemi – Navodilo za
uporabo EN 50129 – 1. del: Križni sprejem
Railway applications - Communication, signalling and processing systems - Application
Guide for EN 50129 -- Part 1: Cross-acceptance
Ta slovenski standard je istoveten z: CLC/TR 50506-1:2007
ICS:
35.240.60 Uporabniške rešitve IT v IT applications in transport
transportu in trgovini and trade
45.020 Železniška tehnika na Railway engineering in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL REPORT
CLC/TR 50506-1
RAPPORT TECHNIQUE
May 2007
TECHNISCHER BERICHT
ICS 93.100
English version
Railway applications -
Communication, signalling and processing systems -
Application Guide for EN 50129 -
Part 1: Cross-acceptance
This Technical Report was approved by CENELEC on 2007-01-16.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TR 50506-1:2007 E
Foreword
This Technical Report was prepared by SC 9XA, Communication, signalling and processing systems, of
Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways.
The text of the draft was submitted to vote and was approved by CENELEC as CLC/TR 50506-1 on
2007-01-16.
- 3 - CLC/TR 50506-1:2007
Contents
Introduction . 4
1 Scope. 4
2 Normative references . 4
3 Terms, definitions and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Abbreviated terms . 5
4 Cross-acceptance. 7
4.1 General . 7
4.2 Definition and importance of cross-acceptance . 7
4.3 Lifecycle for cross-acceptance . 7
4.3.1 General. 7
4.3.2 Specification . 9
4.4 Cross-acceptance process . 9
4.4.1 The basic premise. 9
4.4.2 Principles of cross-acceptance. 10
4.4.3 Safety cases for cross-acceptance. 14
4.4.4 Generic product / application safety case for cross-acceptance . 14
4.4.5 Field testing . 15
4.4.6 Compliance report. 15
Bibliography . 16
Figures
Figure 1 – The role of assessor and developer in maintaining system requirements . 12
Figure 2 – The three types of safety case involved in cross-acceptance process . 14
Table
Table 1 – Lifecycle for cross-acceptance of safety related/safety critical
systems/products/equipment . 8
Introduction
EN 50129 was developed in CENELEC and is now regularly called up in specifications. In essence, it lists
factors that influence RAMS (see EN 50126) and adopts a broad risk-management approach to safety.
EN 50129 is the basic standard for safety related electronic systems for signalling.
Use of EN 50129 has enhanced the general understanding of the issues, but has also shown that items
like cross-acceptance need further explanation and clarification. Therefore CENELEC decided to address
those items in this application guide for cross-acceptance.
1 Scope
This application guide for cross-acceptance is a Technical Report about the basic standard. It is
applicable to the same systems and addresses the same audience as the standard itself. It provides
additional information on the application of EN 50129 to cross-acceptance. Therefore it deals with the
acceptance by a safety authority of a previously accepted system or product in a different environment
and/or context, often referred to as cross-acceptance. It is mainly dedicated to safety assessors, safety
authorities, validators, and safety managers.
In drafting this guide, it is assumed that the reader is familiar with the basic structure of the standard.
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.
NOTE Additional informative references are included in the bibliography.
EN 50124-1, Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and
creepage distances for all electrical and electronic equipment
EN 50126, Railway applications - The specification and demonstration of Reliability, Availability,
Maintainability and Safety (RAMS)
EN 50128, Railway applications - Communication, signalling and processing systems - Software for
railway control and protection systems
EN 50129, Railway applications - Communication, signalling and processing systems - Safety related
electronic systems for signalling
EN 61508 series, Functional safety of electrical/electronic/programmable electronic safety-related
systems (IEC 61508 series)
EN/ISO 9001:2000, Quality management systems – Requirements (ISO 9001:2000)
EN/ISO/IEC 17020, General criteria for the operation of various types of bodies performing inspection
(ISO/IEC 17020)
- 5 - CLC/TR 50506-1:2007
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 50126, EN 50128, EN 50129
and the following apply. Other definitions not included in these documents have been added to eliminate
any doubts regarding their interpretation.
3.1.1
generic application
system with specific functions that are related to “a category of applications” associated with a general
environmental and operational context, which is developed on the basis of criteria of standardization and
parameterization of its elements, so as to render it serviceable for various tangible applications. By
combining generic products or combining these with other generic applications, it is possible to obtain a
new generic application
3.1.2
generic product
component/product capable of performing certain functions, with a specific performance level, in the
environmental and operational conditions stated in the reference specifications. It can be combined with
other products and generic applications to form other generic applications
3.1.3
specific application
a specific application is used for only one particular installation
3.1.4
risk analysis
identification of hazards associated with a product, process or system, scrutiny of their causes and
systematic determination of their consequences in an operational context. Risk analysis results in the
identification of the nature of likely sources of harm arising from a product, process or system and their
impact in terms of nature of likely accidents and the severity of harm caused
3.1.5
safety analysis
subset of risk analysis solely focused on hazards which have a potential for causing accidents which may
cause harm to people
3.2 Abbreviated terms
For the purposes of this document, the abbreviated terms used in EN 50126, EN 50128 and EN 50129
and the following apply. Other abbreviations not included in these standards have been added to
eliminate any doubts regarding their interpretation.
CMP configuration management plan
COTS commercial-off-the-shelf
CRS customer requirements specification
CTC centralised traffic control
DRACAS data reporting and corrective action system
FMECA failure mode effects and criticality analysis
FRACAS failure reporting and corrective actions system
FTI formal technical inspection
FTP field trial plan
FTR field trial report
FPGA field programmable gate array
HAZAN hazard analysis
HAZOP hazard and operability study
I/O input / output
IHA interface hazard analysis
ISA independent safety assessor
LRU line replaceable unit
OSHA operation and system hazard analysis
PCB printed circuit board
PHA preliminary hazard analysis
PLC programmable logic controller
QAP quality assurance plan
QMS quality management system
RAM-P RAM-plan
SC safety case
SAD system architecture description
SADT structured analysis and design techniques
SAP safety plan
SEEA SW error effects analysis
SHA system hazard analysis
SRS system requirements specification
SSHA subsystem hazard analysis
SSRS subsystem requirements specification
VAP validation plan
VHDL VHSIC hardware description language
VHSIC very high speed integrated circuit
VLSI very large scale integration
VTR validation test report
V&V verification & validation
- 7 - CLC/TR 50506-1:2007
4 Cross-acceptance
4.1 General
Clause 4 describes the requirements and conditions necessary to achieve the acceptance of a product or
application for use in a different environment from that for which it was originally developed and
approved. One field of application of this Technical Report could be interoperability (for example TSI for
Control Command Subsystem) and in general fields where cross-acceptance is needed.
4.2 Definition and importance of cross-acceptance
Cross-acceptance is defined in EN 50129.
Cross-acceptance is an aspect of the technical and legal process principally aimed at establishing the
fastest route to the deployment of Product, System or Process in a target (new) context or environment.
The Product, System or Process considered for cross-acceptance is generally assumed to satisfy the
qualifications for reliability, tolerable safety and environmental performance in their native (original)
context or environment.
The target application is also assumed to possess significant synergies with the native environment, thus
making the deployment technically feasible viable/advantageous without significant alterations. However,
the essence of cross-acceptance currently relates to the assurance of safety and potentially
environmental performance of product, system or process which are subject to a regulatory regime.
4.3 Lifecycle for cross-acceptance
4.3.1 General
The cross-acceptance life cycle can be seen as a branch of the life cycle model defined in EN 50126,
starting after the original approval of the generic product or generic application. Cross-acceptance life
cycle mainly comprises
– phases, planning and documents (including role of field testing),
– safety assurance processes,
– approval processes.
Table 1 – Lifecycle for cross-acceptance of safety related/safety critical systems/products/equipment
Phase Customer Supplier Output documents
Start cross- Define requirements / specifications Prepare safety plan, validation plan, RAM- Follow life cycle, plan.
acceptance (functional, environment, operation, safety, plan, field trial plan.
maintenance, etc.).
Specification Attend hazard identification meeting with Create SRS; create preliminary hazard SRS, preliminary hazard analysis, hazard
members from approval authority, assessor, analysis (PHA) and hazard analysis (HAZ- analysis.
operator, operation and maintenance. AN) on the base of CRS and risk analysis.
Evaluation of Evaluation of differences between originally Evaluation of differences between originally Verification report of specification, updated
differences approved application and new customer approved application and new customer hazard-log (if identified).
application. application.
Validation Assessor: assess validation plan. Start system validation of system Life cycle; validation test report, field trial
requirement specification against customer report (post pilot).
requirement specification.
Assessment Assessor: create assessment report; Assessment of the differences, the assessor Assessment report.
safety case will be examined by an must be familiar with the operating
assessor. The result of his work will be conditions.
presented in an assessment report, forming
the background for the decision taken by
the railway authority.
S
...
CLC/TR 50506-1:2007は、鉄道アプリケーションにおける通信、信号処理システムに関する技術的な報告書であり、EN 50129の適用ガイドとして非常に重要な役割を果たしています。この標準は、クロスアクセプタンス（相互受け入れ）に関する具体的なガイダンスを提供し、同じシステムに適用されるため、標準自体と同様の受け手層を対象としています。 このガイドの主な強みは、異なる環境やコンテキストにおける既に承認されたシステムや製品の受け入れに関連する情報を提供する点にあります。特に、安全性評価者、安全当局、検証者、安全管理者にとって、有用な資源となる情報を包括しています。これにより、安全性評価の過程がスムーズに進むことが期待されます。 また、文書は基本的な標準の構造を熟知していることを前提にしているため、専門家が容易に利用できる内容となっています。このため、鉄道業界における影響力も大きく、標準化の進展に寄与することが見込まれます。全体として、CLC/TR 50506-1:2007は、鉄道信号システムの安全性を確保するための重要な手引きとなる標準であり、その関連性と有効性は高いと言えます。
CLC/TR 50506-1:2007 표준은 철도 애플리케이션의 통신, 신호 및 처리 시스템에 관한 응용 가이드로, EN 50129의 교차 수용에 대한 내용을 다루고 있습니다. 본 문서는 기술 보고서 형태로 작성되어 있으며, 표준 자체와 동일한 시스템을 대상으로 하고 동일한 청중을 목적으로 합니다. 이 가이드는 EN 50129을 교차 수용에 적용하기 위한 추가 정보를 제공하여, 안전 당국이 다른 환경 또는 맥락에서 이전에 수용된 시스템이나 제품에 대한 수용 여부를 결정하는 데 초점을 맞추고 있습니다. 이 표준의 강점은 안전 평가자, 안전 당국, 검증자 및 안전 관리자와 같은 관련 전문가들에게 매우 유용한 지침을 제공한다는 것입니다. CLC/TR 50506-1:2007은 안전성과 관련된 다양한 이슈를 다루며, 독자가 기본 표준의 구조에 익숙하다는 전제로 작성되었기 때문에, 관련자들은 보다 쉽게 이 문서를 활용하여 교차 수용 프로세스를 이해하고 적용할 수 있습니다. 또한, 이 문서는 교차 수용 과정에서의 문제들을 해결하기 위한 명확한 방법론과 절차를 제시함으로써, 철도 통신 및 신호 시스템의 안전성과 신뢰성을 높이는 데 큰 기여를 합니다. 결국, CLC/TR 50506-1:2007 표준은 철도 분야의 안전성 증진을 위한 필수적인 자료로, 이러한 모든 요소들이 이 문서의 연관성과 중요성을 잘 드러내고 있습니다.
The CLC/TR 50506-1:2007 standard serves as an essential resource in the railway sector, specifically focusing on communication, signaling, and processing systems. This application guide for EN 50129 meticulously outlines the concept of cross-acceptance, which is crucial for ensuring that systems and products previously accepted in one context can be recognized in another, thus enhancing interoperability and safety across different railway environments. One of the primary strengths of this standard lies in its clear delineation of the acceptance process by safety authorities, catering specifically to safety assessors, validators, and safety managers. By addressing cross-acceptance, the document fills a significant gap in the application of safety standards, ensuring that previously validated systems can transition smoothly to alternative operational environments without compromising safety or compliance. The relevance of CLC/TR 50506-1:2007 cannot be overstated, as it directly supports ongoing efforts to maintain high safety standards within the railway industry. The guide provides critical information on the application of EN 50129, helping stakeholders navigate the complexities associated with cross-acceptance and facilitating better safety management practices. Furthermore, the standard presupposes a foundational understanding of EN 50129, making it a targeted tool for professionals already engaged in the rail safety domain, thereby enhancing its utility. This focused approach ensures that the guide is not only practical but also strategically aligned with the needs of its intended audience, reinforcing its effectiveness as a technical document in the realm of railway safety and standardization.
Le document SIST-TP CLC/TR 50506-1:2007 se distingue par son approche claire et précise concernant l'application de la norme EN 50129 dans le cadre de l'acceptation croisée dans les systèmes des applications ferroviaires. Ce rapport technique s'adresse principalement aux évaluateurs de sécurité, aux autorités de sécurité, aux validateurs et aux gestionnaires de sécurité, et il vise à renforcer leur compréhension des processus liés à l'acceptation de systèmes ou de produits déjà approuvés dans des environnements ou contextes différents. L'un des points forts de cette norme est sa capacité à fournir des lignes directrices détaillées sur la manière dont les autorités de sécurité peuvent juger de l'acceptation croisée. En permettant un dialogue clair entre les différentes parties prenantes, cette norme facilite un meilleur usage des systèmes existants, ce qui peut conduire à une optimisation des ressources et à une réduction des délais nécessaires pour obtenir les approbations requises. En outre, le rapport souligne l'importance de la cohérence dans l'évaluation des systèmes. Il garantit que les exigences de sécurité sont maintenues, même lorsque les systèmes sont utilisés dans de nouveaux contextes. Cela est particulièrement pertinent dans le secteur ferroviaire, où la sécurité est primordiale et les enjeux peuvent être élevés. La normalisation offerte par ce document permet non seulement de renforcer la confiance dans les évaluations de sécurité, mais également de standardiser les processus d'acceptation croisée à travers différentes juridictions. La pertinence de cette norme réside dans son application largement applicable et son lien direct avec le standard de base EN 50129. En intégrant des recommandations et des clarifications sur l'acceptation croisée, le document contribue de manière significative au développement d'une culture de sécurité homogène dans les systèmes de communication, de signalisation et de traitement ferroviaires. En somme, le SIST-TP CLC/TR 50506-1:2007 se positionne comme un outil indispensable pour améliorer les pratiques en matière d'acceptation croisée, tout en renforçant la sécurité et l’efficacité opérationnelle au sein des applications ferroviaires.
Der Standard CLC/TR 50506-1:2007 bietet eine umfassende Anwendungshilfe für die Anforderungen des EN 50129 im Bereich der Eisenbahnanwendungen, insbesondere bezüglich Kommunikation, Signalgebung und Verarbeitungssystemen. Der Geltungsbereich dieses technischen Berichts konzentriert sich auf das Konzept der Cross-Acceptance, das für die Akzeptanz von zuvor akzeptierten Systemen oder Produkten in neuen Umgebungen oder Kontexten von entscheidender Bedeutung ist. Ein herausragendes Merkmal dieses Standards ist seine Klarheit in der Darstellung der Prozesse, die für Sicherheitsbewertungsstellen, Sicherheitsbehörden und Sicherheitsmanager von Bedeutung sind. Durch die Fokussierung auf die Cross-Acceptance wird eine essentielle Brücke zu den bestehenden Sicherheitsstandards und -anforderungen geschlagen, was die Integration von bereits zertifizierten Systemen in unterschiedliche Betriebsbedingungen erleichtert. Ergänzend werden zusätzliche Informationen zu den anwendbaren Richtlinien bereitgestellt, die den Anwendern helfen, die praktischen Anwendungen der EN 50129 besser zu verstehen und umzusetzen. Die Relevanz des CLC/TR 50506-1:2007 wird durch seine Zielgruppe untermauert, die ein breites Spektrum von Fachleuten im Bereich der Sicherheit umfasst. Diese Ausrichtung gewährleistet, dass die bereitgestellten Informationen nicht nur theoretisch sind, sondern auch konkret auf die Herausforderungen im Betrieb von Eisenbahnsystemen eingehen. Die Annahme, dass der Leser mit der Grundstruktur des Standards vertraut ist, schafft eine solide Basis für tiefere Einblicke und fördert ein besseres Verständnis der verbindlichen Anforderungen an die Cross-Acceptance. Insgesamt stellt dieser Standard eine wertvolle Ressource dar, um die Sicherheit in Eisenbahnanwendungen zu gewährleisten und die Abläufe der Cross-Acceptance klar und präzise zu definieren. Sein Beitrag zur Harmonisierung von Sicherheitspraktiken und zur Erleichterung der Integration von Systemen in unterschiedlichen Betriebsumgebungen ist von großer Bedeutung für die zukünftige Entwicklung und den Betrieb der Eisenbahninfrastruktur.
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