EN 15380-5:2014

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bahnanwendungen - Kennzeichnungssystematik für Schienenfahrzeuge - Teil 5: Systeme; Systemgruppen - SystemanforderungenApplications ferroviaires - Systèmes de classification pour véhicules ferroviaires - Partie 5: Systèmes ; Groupes des systèmes - Exigences des systèmesRailway applications - Classification system for rail vehicles - Part 5: Systems; System groups - System requirements45.060.01Železniška vozila na splošnoRailway rolling stock in general01.110L]GHONHTechnical product documentationICS:Ta slovenski standard je istoveten z:EN 15380-5:2014SIST EN 15380-5:2014en,fr,de01-november-2014SIST EN 15380-5:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15380-5
September 2014 ICS 01.110; 45.060.01 English Version
Railway applications - Classification system for railway vehicles -Part 5: System Breakdown Structure (SBS)
Applications ferroviaires - Systèmes de classification pour véhicules ferroviaires - Partie 5: Arborescence système (SBS)
Bahnanwendungen - Kennzeichnungssystematik für Schienenfahrzeuge - Teil 5: Systemstruktur This European Standard was approved by CEN on 21 June 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
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Attributes . 12 Annex B (informative)
Connections of FBS, SBS and PBS (Example) . 14 Annex C (informative)
Rules to define the system level . 17 Bibliography . 18
A system is generally defined with a view to achieve a given objective, e.g. by performing a definite function. Note 2 to entry
Examples of a system: A drive system, a water supply system, a stereo system, a computer. Note 3 to entry
The system is considered to be separated from the environment and from the other external systems by an imaginary surface, which cuts the links between them and the system. Note 4 to entry
The term system should be qualified when it is not clear from the context to what it refers, e.g. control system, colorimetric system, system of units, transmission system. Note 5 to entry
When a system is part of another system, it may be considered as an object as defined in this standard. [SOURCE: EN 81346-1:2009, 3.2, modified — Note 2 to entry has been changed] 3.3 structure organization of relations among objects of a system describing constituency relations (consists-of/ is-a-part-of) [SOURCE: EN 81346-1:2009, definition 3.9] SIST EN 15380-5:2014

In the context of this standard the term refers to the industrial process (assembly, construction, installation, etc.) through which an object is realized. [SOURCE: EN 81346-1:2009, 3.6, modified — NOTE 1 to entry has been added] 3.5 product-oriented structure based on the way a system is implemented, constructed or delivered using semi-finished or finished components Note 1 to entry
A product-oriented structure shows the subdivision of the system into constituent objects with respect to the product aspect without taking into account possible function and/or location aspects of these objects. Note 2 to entry
Documents in which the information on a system is organized in accordance with a product-oriented structure highlight the physical arrangements of the components of that system. 3.6 requirement necessary condition or ability to constrain the solutions of a task or an aim Note 1 to entry
A requirement describes for example, performance characteristics, operational conditions and quality attributes, expressed as measurable and testable technical parameters or indicators. Note 2 to entry
Requirements are usually summarized in a specification. Note 3 to entry
Beside requirements allocated to functions, additional requirements are allocated to other features (e.g. design, manufacturing). 3.6.1 system requirement requirement on a system, subsystem or device Note 1 to entry
Requirement on a system, subsystem or device regarding the requested technical compatibility, reliability, availability, maintainability, environmental impact/conditions (recyclables, emissions, EMC, climate, vibration), LCC, performance, quality, documentation, realtime behaviour, physical limits (dimension, weight), electrical interface (plugs, voltage, physical layer), or mechanical interface (fixing points, fixing method). 3.7 system breakdown structure (SBS) hierarchical structure summarising a set of systems 3.8 system level level of group systems Note 1 to entry
Assignment to the appropriate level is described in the rules. 3.9 1st level system (main system) main system that provides the key characteristics of the railway vehicle like functions, performance Note 1 to entry
A railway vehicle is built up of main systems. SIST EN 15380-5:2014

A main system is built up of subsystems. 3.11 transverse element element that is common to a number of main systems or subsystems Note 1 to entry
For more information see 5.4. 3.12 attribute key characteristic usually defining performance parameters or boundary conditions applicable to consist and system levels Note 1 to entry
For more information see Annex A (informative). 3.13 boundary condition non-influenceable condition which has to be taken into account as a given parameter 3.14 consist single vehicle or a group of vehicles that are not separated during normal operation; train set and rake of coaches are synonyms EXAMPLE The vehicles of a consist are permanently connected in a workshop. These consists may form a train using for instance automatic couplers, which may be performed during operation. [SOURCE: EN 50463-4:2012, 3.1.2, modified — Note 1 to entry omitted and example has been added] 4 Symbols and abbreviations FBS Functional Breakdown Structure SBS System Breakdown Structure PBS Product Breakdown Structure FRS Functional Requirement Specification 5 System Breakdown Structure (SBS) 5.1 General remarks The hierarchy of the SBS serves as a guideline when creating system structures. Systems realize functions at a high technical level as hardware and software within hierarchically structured units. Although the units interact at the functional level, they may be spatially separate from one another. Expanding the systems and subsystems is possible within the scope of this standard. Whether it is necessary to make use of this option will depend on the specific application being considered. Changes of the
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