EN 50126-3 PDF

Supersedes CLC/TR English version. Railway applications –. The specification and demonstration of. Reliability, Availability. BS PD CLC/TR Railway applications – The specification and demonstration of Reliability, Availability, Maintainability and Safety (RAMS) – Part 3. Buy CLC/TR Railway Applications – The Specification And Demonstration Of Reliability, Availability, Maintainability And Safety (rams) – Part 3.

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The resultant deliverables of the preliminary RAM-related activities are: Software for railway control and protection systems. This guide deals with the application of RAM part of EN to rolling stock only, as stated in the Scope and clarifies areas where EN could be misinterpreted.

Consequently, the 501126-3 from the previous phase should be updated and detailed considerations given to the RAM. Call for tender contains data about concept, definition and specification of rolling stock and RAM Requirement to be fulfilled, according to Clause 5 of this guide.

Destruel Date of publication: For a rolling stock and for its subsystems, assemblies and parts according to the boundary limits defined, there ej different types of Maintainability Targets: Any failure occurring on Rolling stock and leading, at least, to one of the following conditions: Manual of Railway Engineering Edition Additional requirements may be agreed between customer and supplier.

Items contained in each of these are listed below: Life cycle costing is the process of economic analysis to assess the total cost of acquisition and ownership of a product. Based on the above considerations, the RAM Programme could be defined as shown in the following diagram. EN – 3: The process of deriving detailed hazards for rolling stock should be addressed to cover all the possible and reasonable factors influencing safety by considering at least the following: The above actions would enable the Customer to make better choices with substantial supporting documentation.

Examples of Breakdown Structure are given in Annex A. These characteristics define the conditions under which the rolling stock is required to accomplish its mission and constitute the reference conditions for: Identify the problems occurring during the earliest operation phase,!


Wollny, 11th July However, it provides, only as an example, typical data and document templates for recording the output of a RAM analysis. SF to LA in under 3 hours by In this case two choices can be considered for addressing the target of minimising standstill time: Regarding FMECA to examine functions, it is sufficient to consider the main functions by changing the header deleting the structure reference and by changing some columns deleting the first four columns and inserting suitable columns for numbering functions, description of the main function, description of sub-function and description of phases of sub-function in the example of the items FMECA sheet in Figure 5.

At least, the following general conditions of failure are to be considered as “nonchargeable” when verified: This definition could be used where the depth of the Breakdown Structure has been defined see 5. Consecutive number used to identify each maintenance task Maintenance Task Description of the preventive maintenance task Spare Parts and special tools Description of the special equipment not provided by the depot or workshop and in any case not easily available on the market and materials necessary consumables and spares Frequency Frequency of the maintenance task time or Km Maintenance level Codes of the maintenance levels used by the maintainer Personnel Number of persons necessary at the same time for the maintenance task described Skill Level Code of the Skill level requested for the personnel to carry out the maintenance task Spare Parts Cost Unit cost of materials expressed in EURO Man hours Time required for the maintenance task multiplied by the number of persons necessary Standstill time Standstill time for the rolling stock during the maintenance task Total Qty Total no.

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These types of data are common through the different analyses and levels of the Breakdown Structure. Depending on the definition of MUT and MDT, it is possible to have different types of availability using the same formula: It also contains indications for future logistic organisation of the maintainer within the “Frequency total data”, where the Main Supplier should indicate the following data for the frequency interval analysed: The specification and demonstration of reliability, availability, maintainability and safety RAMS.


Although some of the examples given in the annexes of EN are 501263- rolling stock, the standard is essentially a imed as a top level railway system document. Depending on the organisational and management structure of the railway system concerned, a number of entities, performing different functions, may be involved within the 51026-3 cycle phases of rolling stock.

The faster, easier way to work with standards. Generally, the steady state level is achieved at least after two years of revenue service.

Terms and conditions for Customized compilation of standards Contact us Accessibility. Also, reports about repair and cause of failure are necess ary to address the correct corrective actions. Railway Customers and Operators require railway products that are reliable, safe and can be easily maintained over their useful lives. The target for the depot is to minimise standstill time for the Rolling Stock in order to release it, ready for service, following completion of maintenance within the lowest possible time.

In order to simplify the common understanding, a three level breakdown structure has been considered in these examples and the third level is the LRU level.

PD CLC/TR 50126-3:2008

The frequency time or Km under analysis has to be indicated in the header. Please help us to share our service with your friends.

Use of data from previous accidents and incidents, generic lists and other documents dealing with safety and hazards is recommended. This sheet only contains preventive maintenance data for an LRU maintained during the same frequency interval. Test yourself or your business online. The input documentation of this phase is the tender documentation presented by the Main Supplier and the contractual agreements confirmed during negotiation.

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