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BS EN 13749:2021 pdf free

BS EN 13749:2021 pdf free.Railway applications – Wheelsets and bogies一Method of specifying the structural requirements of bogie frames.
This document specifies the method to be followed to achieve a satisfactory design of bogie frames and includes design procedures, assessment methods, verification and manufacturing quality requirements. It is limited to the structural requirements of bogie frames including bolsters and axiebox housings. For the purpose of this document, these terms are taken to include all functional attachments, e.g. damper brackets.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 15085-1:2007+A1:2013, Railway applications- Welding of railway vehicles and components – Part 1:
EN 15085-2:2007, Railway applications. Welding of railway vehicles and components – Part 2: Quality requirements and certification of welding manufacturer
EN 15085-3:2007, Railway applications – Welding of railway vehicles and components – Part 3: Design requirements
EN 15085-4:2007, Railway applications- Welding of railway vehicles and components. Part 4: Production requirements
EN 15085-5:2007, Railway applications- Welding of railway vehicles and components – Part 5: Inspection, testing and documentation
EN 15663:2017+A1:2018, Railway applications- Vehicle reference masses
EN 15827:2011, Railway applications – Requirements for bogies and running gears
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 15827:2011 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
NOTE Annex A identifies the symbols, units, coordinate system and bogie categories used in the informative annexes to this European standard.
4.1 Scope
The technical specification shall consist of all the information describing the functional requirements of the bogie frame and the interfaces with associated components and assemblies. It shall also comprise, as a minimum, the general requirements of use, the conditions associated with the vehicle equipped with the bogies, the operating characteristics, the conditions associated with maintenance and any other particular requirements.
The technical specification shall also identiI’ all appropriate mandatory regulations and define the parts of the validation and acceptance procedure (Clause 6) and the quality requirements (Clause 7), which are specifically required. and the way in which evidence to show that the requirements have been met Is to be provided.
NOTE If the customer is unable to define the technical specification completely the supplier usually proposes
a technical specification and submits it to the customer (and the approval authority where relevant) for agreement.
4.2 General requirements
The technical specification shall indicate the type of bogie required in terms of its use. It shall also indicate the intended life of the bogie, its average annual distance run and its total distance run and all the information that is applicable to a bogie frame associated with the Essential Requirements of a TSI as indicated in EN 15827:2011. Information that is particularly relevant to bogie frame design is indicated in the following clauses.
4.3 Design load cases
The technical specification for the bogie frame shall consist primarily of the load cases required for the design of the bogie as specified in EN 15827:2011, plus any additional load cases required by that standard or arising from the application. The load cases shall be based on the vehicle mass states given in EN 15663:2017+A1:2018. However, for some applications and fatigue assessment methods it will be necessary to use additional vehicle loading conditions (expressed as functions of the cases in EN 15663:2017+A1:2018) to obtain an accurate description of the vehicle payload spectrum for design Purposes.
The development of the design load cases is discussed in Annex B and examples of design load cases associated with bogie running and due to the attachment of equipment are given in Annexes C and D respectively.BS EN 13749 pdf free download.

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