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BSI BS EN 50128:2001

Railway applications. Communication, signalling and processing systems. Software for railway control and protection systems
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BSI BS EN 50128:2001

Railway applications. Communication, signalling and processing systems. Software for railway control and protection systems

PUBLISH DATE 2010
PAGES 110
BSI BS EN 50128:2001

1.1 This European Standard specifies procedures and technical requirements for the development of programmable electronic systems for use in railway control and protection applications. It is aimed at use in any area where there are safety implications. These may range from the very critical, such as safety signalling to the non-critical, such as management information systems. These systems may be implemented using dedicated microprocessors, programmable logic controllers, multiprocessor distributed systems, larger scale central processor systems or other architectures.

1.2 This European Standard is applicable exclusively to software and the interaction between software and the system of which it is part.

1.3 Software safety integrity levels above 0 are for use in systems in which the consequences of failure could include loss of life. Economic or environmental considerations, however, may also justify the use of higher software safety integrity levels.

1.4 This European Standard applies to all software used in development and implementation of railway control and protection systems including:

  • application programming;

  • operating systems;

  • support tools;

  • firmware.

Application programming comprises high level programming, low level programming and special purpose programming (for example: Programmable Logic Controller ladder logic).

1.5 The use of standard, commercially available software and tools is also addressed in this European Standard.

1.6 This European Standard also addresses the requirements for systems configured by application data.

1.7 This European Standard is not intended to address commercial issues. These should be addressed as an essential part of any contractual agreement. All the clauses of this European Standard will need careful consideration in any commercial situation.

1.8 This European Standard is not intended to be retrospective. It therefore applies primarily to new developments and only applies in its entirety to existing systems if these are subjected to major modifications. For minor changes, only clause 16 applies.

SDO BSI: British Standards Institution
Document Number EN 50128
Publication Date Aug. 31, 2010
Language en - English
Page Count 110
Revision Level
Supercedes
Committee GEL/9
Publish Date Document Id Type View
July 31, 2011 BS EN 50128:2011 Revision
May 15, 2001 BS EN 50128:2001 Revision
Aug. 10, 2020 BS EN 50128:2011+A2:2020 Consolidated
Feb. 26, 2020 BS EN 50128:2011+A1:2020 Consolidated
Aug. 31, 2010 BS EN 50128:2001 Consolidated