BS EN 60880:2009

INTRODUCTION
1 Scope and object
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 General requirements for software projects
6 Software requirements
7 Design and implementation
8 Software Verification
9 Software aspects of system integration
10 Software aspects of system validation
11 Software modification
12 Software aspects of installation and operation
13 Defences against common cause failure due to software
14 Software tools for the development of software
15 Qualification of pre-developed software
Annex A (normative) - Software safety life cycle and
        details of software requirements
Annex B (normative) - Detailed requirements and
        recommendations for design and implementation
Annex C (informative) - Example of application oriented soft
        ware engineering (software development with
        application-oriented language)
Annex D (informative) - Language, translator, linkage editor
Annex E (informative) - Software verification and testing
Annex F (informative) - Typical list of software documentation,
Annex G (informative) - Considerations of CCF and diversity
Annex H (informative) - Tools for production and checking of
        specification design and implementation
Annex I (informative) - Requirements concerning pre-developed
        software (PDS)
Annex J (informative) - Correspondence between IEC 61513 and
        this standard
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Describes the requirements for the software of computer-based I&C systems of nuclear power plants performing functions of safety category A as defined by IEC 61226.

This International Standard provides requirements for the software of computer-based I&Csystems of nuclear power plants performing functions of safety category A as defined by IEC 61226. According to the definition in IEC 61513, I&C systems of safety class 1 are basically intended to support category A functions, but may also support functions of lower categories. However the system requirements are always determined by the functions of the highest category implemented. For software of I&C system performing only category B and C functionsin NPP as defined by IEC 61226, requirements and guidance of IEC 62138 are applicable. This standard provides requirements for the purpose of achieving highly reliable software. It addresses each stage of software generation and documentation, including requirements specification, design, implementation, verification, validation and operation. The principles applied in developing these requirements include: best available practices; top-down design methods; modularity; verification of each phase; clear documentation; auditable documents; validation testing. Additional guidance and information on how to comply with the requirements of the main part of this standard is given in Annexes A to I.