SR CLC/TR 50126-3:2020

This document provides guidance on applying the RAM requirements in EN 50126-1 to rolling stock and for dealing with RAM activities during the system life cycle phases from invitation to tender to demonstration in operation only. All references to EN 50126-1 concern the version of 1998. The guide is aimed at the customers/operators and main suppliers of rolling stock. The main purpose of the guide is to: * enable a customer/operator of rolling stock: - to specify the RAM requirements addressing the type of operation in terms of the end customer needs, considering service availability and economic considerations; - to evaluate different tenders, in terms of RAM requirements, on a common basis with the aid of specific RAM documents; - to gain assurance, during design/development phase, that the rolling stock being offered is likely to satisfy the RAM contractual requirements by examining step by step detailed and specific RAM documents as an output of the RAM activities performed during the development phase; - to validate that the rolling stock, as delivered, satisfies the spec