VDE V 0831-101 E DIN VDE V 0831-101 2021-06 PDF

Full title and description

STB VDE V 0831-101 E / DIN VDE V 0831-101 (2021-06) — Electric signalling systems for railways — Part 101: Semi-quantitative processes for risk analysis of technical functions in railway signalling. This item is a VDE/DIN pre-standard (Vornorm) that specifies the structure, parameters and application guidance for semi-quantitative risk analysis methods used to derive safety requirements for electrical, electronic and programmable electronic (E/E/PE) systems in railway signalling.

Abstract

This document defines principles and procedural steps for constructing and applying semi-quantitative risk-analysis methods (for example “risk score matrix” style approaches) to evaluate safety-relevant technical functions in railway signalling systems. It gives recommended parameter definitions, evaluation metrics for harm and barrier effectiveness, and example worksheets or table formats to support consistent derivation and documentation of safety requirements. The 2021-06 release is recorded in commercial standards catalogues and the content is aligned with the wider VDE V 0831 series on railway signalling.

General information

• Status: Published as E DIN VDE V 0831-101 (2021-06) in some catalogues; listed as withdrawn/superseded in VDE/DIN listings and replaced by a later DIN VDE V 0831-101 edition (2022‑08).
• Publication date: 2021-06 (recorded publication date: 01 June 2021 in standards databases).
• Publisher: VDE / DIN (VDE Verlag on behalf of DIN/VDE committees; DKE technical committee UK 351.3 for railway signalling).
• ICS / categories: Railway signalling / electrical engineering (part of the VDE V 0831 series addressing functional safety, risk analysis and requirements for electric signalling systems for railways).
• Edition / version: E DIN VDE V 0831-101 edition with recorded date 2021-06 (entry in standards catalogues). Later consolidated edition published 2022-08 supersedes earlier versions.
• Number of pages: Catalogued around 50–56 pages (commercial listings record 52 pages for the 2021-06 entry; earlier and later releases show similar page counts).

Scope

The pre-standard applies to safety-relevant electrical, electronic and programmable electronic (E/E/PE) systems, including subsystems and equipment for electric signalling systems for railways. It sets requirements and guidance for the reliable design and application of semi-quantitative risk-analysis methods so they can be used to derive and document safety requirements for technical signalling functions. The standard is intended to be used where a semi-quantitative approach is appropriate and where full quantitative data may not be available.

Key topics and requirements

• Definition of semi-quantitative method structure (e.g., risk score matrices) and required parameters.
• Guidance on classifying harm/severity, exposure, and probability-like parameters used in semi-quantitative scoring.
• Requirements for documenting assumptions, calibration logic and monotonicity/sensitivity considerations.
• Examples of worksheets, tables and templates to support consistent application and traceability of derived safety requirements.
• Expectations for an application/user handbook to accompany any semi-quantitative method (definition, examples, and explanatory material).

Typical use and users

Engineers and safety assessors working for railway infrastructure managers, signalling equipment manufacturers, system integrators and independent certification/assessment bodies use this pre-standard to structure semi-quantitative risk analyses, to derive functional safety requirements, and to document justification for safety cases in signalling projects. It is also used by standards committees and consultants developing or harmonizing risk-assessment procedures for railway signalling.

Related standards

This part is one element of the VDE V 0831 / DIN VDE V 0831 series covering railway signalling (other related parts include guidance on identifying safety requirements (Part 103), IT security guidance (Part 104), and subsequent parts on risk-based vulnerability handling and other topics). The pre-standard is intended to work together with these parts and with relevant European standards (where applicable) for functional safety and signalling equipment.

Keywords

railway signalling, electric signalling systems, semi-quantitative risk analysis, risk score matrix, E/E/PE systems, safety requirements, VDE V 0831, DIN VDE

FAQ

Q: What is this standard?

A: A VDE/DIN pre-standard (Part 101 of the VDE V 0831 series) that specifies semi-quantitative processes for performing risk analyses of technical functions in railway signalling systems, providing structure, parameters and example documentation.

Q: What does it cover?

A: It covers the construction and application of semi-quantitative methods (such as risk score matrices) to assess safety-relevant functions in electrical railway signalling, including recommended parameter definitions, scoring logic, templates and documentation practice.

Q: Who typically uses it?

A: Railway signalling engineers, safety assessors, signalling equipment manufacturers, system integrators, infrastructure managers and conformity/certification bodies who need a structured semi-quantitative approach to derive and document safety requirements.

Q: Is it current or superseded?

A: The 2021-06 entry is recorded in commercial catalogues; however, VDE/DIN catalogues show a later consolidated edition (DIN VDE V 0831-101:2022-08) as the valid/superseding release. Users should prefer the most recent DIN/VDE edition for current authoritative text.

Q: Is it part of a series?

A: Yes — it is Part 101 of the VDE V 0831 / DIN VDE V 0831 series on electric signalling systems for railways; other related parts cover identification of safety requirements (Part 103), IT security and other signalling-specific topics.

Q: What are the key keywords?

A: Railway signalling; semi-quantitative risk analysis; risk score matrix; E/E/PE systems; safety requirements; VDE V 0831; DIN VDE.