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EVS-EN 50126-1:2005

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Railway applications – The specification and demonstration of Reliability, Availability, Maintainability and Safety (RAMS) Part 1: Basic requirements and generic process

This European Standard: - defines RAMS in terms of reliability, availabiliy, maintainability and safety and their interaction; - defines a process, based on the system lifecycle and tasks within it, for managing RAMS; - enables conflicts between RAMS elements to be controlled and managed effectively; - defines a systematic process for specifying reqiurements for RAMS and demonstrating that these requirements are achieved; - adresses railway specifics; - does not define RAMS targets, quantities, requirements or solutions for specific railway applications; - does not specify requirements for ensuring system sucurity; - does not define rules or processes pertaining to the certification of railway produkts against the requirements of this standard; - does not define an approval process by the safety regulatory authority.

Although the standard’s status is withdrawn, it still has the presumption of conformity in the meaning of directive 2008/57/EC and conformance with the directive’s requirements can be guaranteed by using the withdrawn version of the standard. The presumption of conformity is valid until a corresponding amendment is published in the Official Journal of the European Union.
 
To view the latest lists of harmonised standards published in the Official Journal of the European Union, visit: 
http://ec.europa.eu/growth/single-market/european-standards/harmonised-standards/

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