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Software Important to Safety in Nuclear Power Plants

English STI/DOC/010/367 92-0-101594-1
184 1 40.50 1994


This report provides guidance on current practices, documenting their strengths and weaknesses in dealing with the important issues of software engineering that nuclear power plant system designers, software producers and regulators are facing. It focuses on safety critical applications of general purpose processors controlled by custom developed software; however, it should also have application in safety related applications and in other types of computers.
Contents: 1. Introduction; 2. Applicability of existing safety principles to software important to safety in nuclear power plants; 3. The engineering context; 4. Management; 5. Modelling for requirement analysis and design; 6. Documentation; 7. Pro- gramming; 8. Verification and validation; 9. Testing; 10. Figures of merit; 11. Maintenance; 12. Tool support; 13. Use of existing software; 14. Personnel qualification and training; 15. Balance in software based systems; Annex I: Existing standards and standardization work relating to software important to safety in nuclear power plants; Annex II: Application of software based systems important to safety in nuclear power plants: Experience of Member States.

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