All materials must achieve at least Euroclass B-s3, d2 (limited contribution to fire) under EN 13501-1. No flaming droplets allowed.
| Class | Max Train Speed (km/h) | Max Aerodynamic Pressure (kPa) | Typical Application | |-------|------------------------|--------------------------------|----------------------| | A | 100 | 0.5 | Low-speed, regional | | B | 120 | 0.75 | Commuter lines | | C | 160 | 1.0 | Intercity | | D | 200 | 1.5 | High-speed passing | | E | >200 (special) | 2.0+ (by agreement) | Very high speed |
When reviewing a product's technical file, look for:
If a supplier offers a "self-declaration" without third-party testing, reject it.
EN 17168 places a heavy emphasis on documentation. It mandates that before any intervention occurs, the object must be thoroughly recorded.
EN 17168:2021 is the European standard that specifies requirements for platform barrier systems used in railway applications. These systems consist of movable doors or gates placed at the edge of station platforms to separate passengers from the tracks and moving vehicles. Quick Overview
Purpose: To ensure the safety and efficiency of rail platforms by preventing track incursions and coordinating passenger flow.
Scope: Covers design, construction, operation, and system integration for metro, tram/light rail, and heavy rail systems.
Station Types: Applies to sub-surface, enclosed, and open-air stations. Key Requirements of EN 17168
The standard provides a comprehensive guide for several critical aspects of platform barrier implementation:
prEN 17168 - Railway Platform Barrier Systems - iTeh Standards
EN 17168:2021 is the current European standard governing the design, construction, and operation of platform barrier systems in railway applications. Published by the European Committee for Standardization (CEN) in August 2021, it provides a comprehensive framework for implementing barriers like platform screen doors (PSDs) to enhance passenger safety and operational efficiency. Scope and Applicability
The standard applies to barriers positioned at the edge of station platforms, immediately adjacent to the rail or guided vehicles.
Transport Modes: It primarily covers metro, tram, and light rail systems, but can be applied to heavy rail if specified by a project. en 17168
Station Environments: It is relevant for sub-surface, enclosed, and open-air stations.
Exclusions: The standard specifically excludes barrier systems using ropes or bars, and those that operate in a vertical direction. Key Technical Requirements
The BS EN 17168:2021 document outlines several critical areas of concern for infrastructure owners and designers:
Structural Integrity: It defines physical and structural requirements, including loading conditions (such as wind pressure from moving trains) and guidelines for glazing and panel materials.
Operational Integration: A core focus is the synchronization of platform barrier doors with train doors to ensure safe passenger boarding and alighting. Safety Features:
Entrapment Prevention: Requirements to prevent passengers from being trapped between the vehicle and the barrier.
Emergency Egress: Specific provisions for emergency doors, driver access, and platform extremity gates.
Electrical Safety: Guidelines for earthing and bonding to maintain electrical safety on platforms equipped with these systems.
Fire Performance: While it includes requirements for fire resistance of materials and the use of barriers to minimize flame/smoke spread, it does not cover certain normative fire performance aspects covered by other specialized standards. Strategic Benefits for Railway Operators
Adhering to EN 17168:2021 offers several operational advantages beyond basic compliance: EN 17168:2021 - Platform barrier systems - iTeh Standards
EN 17168:2021 is the European standard specifically governing Railway Applications — Platform Barrier Systems. It provides the technical and safety framework for the design, integration, and operation of physical barriers (like screen doors or gates) at station platform edges. Scope and Application
The standard applies to barriers positioned immediately adjacent to rail or guided vehicle tracks to prevent passengers from falling or accessing the guideway.
Systems Covered: Metro, tram/light rail, and project-specific heavy rail. All materials must achieve at least Euroclass B-s3,
Environments: Sub-surface (tunnels), enclosed, and open-air stations.
Purpose: Primarily safety—reducing the risk of track falls and managing passenger flow between vehicles and platforms. Key Technical Requirements
The standard organizes requirements into several critical areas for infrastructure owners and system integrators:
Physical and Structural Integrity: Sets standards for fixed structures, glazing, and paneling. It references Eurocodes for structural loading and environmental considerations like wind or thermal effects.
Operational Integration: Defines "correct alignment," which is the precise positioning of vehicle doors relative to platform doors to ensure safe passenger transfer.
Door and Gate Specifications: Includes physical requirements for passenger-use doors, emergency doors, driver access gates, and platform extremity doors.
Control and Safety Systems: Mandates synchronization between train and barrier doors, as well as audible and visible alerts and protection against passenger entrapment. Who Should Use This Standard?
This guide is essential for stakeholders throughout the railway asset lifecycle:
Infrastructure Owners & Asset Managers: For specifying requirements in new-build or retrofit projects.
Designers & System Integrators: For engineering barrier structures and their signalling interfaces.
Manufacturers & Installers: To ensure compliance of platform doors, glazing, and control equipment.
Operators & Maintainers: To manage safety risks, testing, and operational performance. EN 17168:2021 - Platform barrier systems - iTeh Standards
The EN 17168:2021 standard, also known as BS EN 17168, outlines essential requirements for platform barrier systems like screen doors and safety gates in railway environments. It covers critical design, construction, and operation aspects including structural safety, emergency egress, and passenger protection. This standard is applicable to various rail systems like metros and light rail. You can acquire the full standard from authorized sources such as the British Standards Institution (BSI) Danish Standards (DS) EN 17168:2021 - Platform barrier systems - iTeh Standards | Class | Max Train Speed (km/h) |
Title: The Significance of EN 17168: Ensuring Safety and Quality in Cultural Heritage Conservation
Introduction
In the intricate world of cultural heritage preservation, the line between restoration and damage is often perilously thin. Conservators and restorers wield chemicals, solvents, and tools that can either save a centuries-old artifact or destroy it in seconds. For decades, the industry relied on general chemical safety standards or proprietary data from manufacturers. However, the introduction of EN 17168 marked a pivotal shift in the field. Officially titled "Conservation of Cultural Heritage - Guidelines for the characterization of products and materials used in conservation," this European standard establishes a rigorous framework for assessing the materials used to treat our collective history. It is not merely a bureaucratic checklist; it is a fundamental safeguard ensuring that the methods used to preserve the past do not inadvertently compromise its future.
The Necessity of Standardization
Before the widespread adoption of standards like EN 17168, the conservation field faced significant challenges regarding material reliability. A consolidant used to strengthen flaking paint or a cleaner used to remove varnish might perform perfectly in a laboratory setting, yet degrade unpredictably over decades, causing yellowing, cracking, or chemical reactions with the original artifact.
EN 17168 addresses this by providing a unified methodology for characterization. It moves the industry away from anecdotal evidence ("we have always used this product") toward evidence-based practice. By standardizing how products are described and tested, the standard allows conservators to make apples-to-apples comparisons between different materials, ensuring that decisions are based on scientific data rather than marketing claims.
Core Pillars of EN 17168
The standard operates on several key principles that define high-quality conservation materials. First and foremost is composition and identification. EN 17168 mandates that manufacturers provide detailed information on the chemical composition of their products. This transparency is crucial. A conservator cannot treat a composite object (such as a painting with layers of oil, varnish, and dust) without knowing exactly how a cleaning agent will interact with each layer.
Secondly, the standard emphasizes stability and aging resistance. A material introduced into an artwork must be as stable, if not more stable, than the original object. EN 17168 provides guidelines for testing how materials react to environmental factors like UV light, humidity, and temperature fluctuations. This focus on "re-treatability" is vital; conservators must use materials that future generations can remove or alter without damaging the original object, adhering to the core ethical principle of reversibility.
Finally, the standard governs application and performance. It requires that products be tested for their intended use. For instance, an adhesive meant for archaeological ceramics must be tested for bond strength and compatibility with porous mineral surfaces. This ensures that the functional claims of a product match the reality of its performance.
The Impact on Professional Practice
The implementation of EN 17168 has elevated the professional standing of conservators. It provides them with a legal and scientific backing for their choices. In the past, if a treatment failed, it was often difficult to ascertain whether the fault lay with the technique or the material. Under this standard, suppliers are held to strict accountability. This reduces the risk of liability for heritage institutions and private practitioners alike.
Furthermore, the standard facilitates international collaboration. Cultural heritage is a global asset, often treated by international teams of experts. EN 17168 creates a common language. A conservator in Italy can specify a product meeting EN 17168 criteria, and a supplier in Germany can provide a material that meets those exact specifications, eliminating ambiguity and risk.
Conclusion
EN 17168 represents the maturation of conservation science. It acknowledges that preserving cultural heritage is not just an artistic endeavor but a scientific discipline requiring rigorous quality control. By enforcing transparency, stability, and performance, the standard protects artifacts from the unintended consequences of well-meaning interventions. As we face new challenges in preservation, from climate change to modern materials, EN 17168 serves as a bedrock principle: that the tools we use to save history must be as enduring and worthy as the history itself.