SIST EN 15595:2019+AC:2021/kFprA1:2023

Overview

SIST EN 15595:2019+AC:2021/kFprA1:2023 is a crucial European standard developed by CEN that focuses on railway braking systems, specifically on Wheel Slide Protection (WSP). This standard provides comprehensive criteria for the acceptance, type approval, design, testing, and quality assessment of WSP and Wheel Rotation Monitoring (WRM) systems. Ensuring operational safety and efficiency, EN 15595 covers system implementation across various vehicle types and operating conditions, excluding vehicles with rubber-tyred wheels or equipped with hydraulic brakes.

The standard plays an essential role in the railway applications sector, enhancing braking performance and reducing wheel damage caused by wheel slip during braking, ultimately improving safety, reliability, and maintenance outcomes.

Key Topics

• System Acceptance and Type Approval
  EN 15595 defines the requirements and criteria to certify WSP systems ensuring they meet performance and safety standards for rail vehicles.

• Implementation Guidelines
  The standard specifies how to implement WSP systems tailored to particular vehicle types and varying operational contexts, ensuring their adaptability and effectiveness in real-world rail environments.

• Wheel Rotation Monitoring (WRM)
  It includes rigorous requirements for WRM systems that track wheel rotation behavior, a vital component for detecting slip and initiating corrective actions.

• Design and Testing Protocols
  The document outlines testing procedures, including dry and low adhesion surface simulations, to validate the WSP system functionality under different scenarios.

• Quality Assessment
  Quality control measures and testing accreditation (e.g., EN ISO/IEC 17025) are detailed to guarantee WSP and WRM system reliability and standard compliance.

• Reference to Related Standards
  EN 15595 references other critical standards, such as EN 16834:2019 on brake performance, and the UIC 541-05:2005 specification for brake parts, supporting an integrated regulatory framework for railway braking systems.

Applications

EN 15595 is applicable to a wide range of railway vehicles equipped with wheel-based braking systems (excluding those on rubber tyres or with hydraulic brakes). The standard guides manufacturers, system integrators, and testing bodies in:

• Developing and certifying WSP and WRM systems that improve adhesion control during braking.
• Enhancing operational safety by reducing the risk of wheel slide, which can cause wheel flats and track damage.
• Optimizing braking performance under varying conditions, including wet or low adhesion rail surfaces.
• Supporting maintenance planning through reliable wheel slip data from WRM.
• Assisting railway operators in compliance with European safety regulations and improving interoperability of braking systems across national networks.

Related Standards

For a holistic approach to railway braking safety, EN 15595 is complemented by the following standards:

• EN 16834:2019 - Railway applications - Braking - Brake performance
  Provides performance criteria and testing methods for railway brakes, referenced extensively for stopping distance correction and test validity.

• UIC 541-05:2005 - Brakes - Specifications for various brake parts - Wheel Slide Protection device (WSP)
  Offers detailed technical specifications for the manufacturing and construction of WSP devices, supporting EN 15595 compliance.

• EN ISO/IEC 17025 - General requirements for the competence of testing and calibration laboratories
  Ensures that testing of WSP and WRM systems is conducted to international quality standards by accredited organizations.

By adhering to SIST EN 15595:2019+AC:2021/kFprA1:2023, the railway industry strengthens braking system safety, reducing wheel slide risks and enhancing operational efficiency. This standard is indispensable for stakeholders focused on regulatory compliance, safety optimization, and technological advancement in rail vehicle braking systems.