Software requirements for high integrity systems-the CEGB guidelines for the use of programmable electronic systems for reactor protection

Author

Lawrence, A.R.

Author_Institution

Generation Dev. & Constr. Div., CEGB, Barnwood, UK

fYear

1988

fDate

32457

Firstpage

42552

Lastpage

42557

Abstract

A description is given of the CEGB´s guidelines for the use of programmable electronic systems for reactor protection. System and hardware requirements are briefly described, with a fuller discussion of the requirements and restrictions for the use of software within protection systems. The maximum figures which are allowed to be ascribed to software in the reliability calculation for a system containing the software are discussed. The author concludes that the PES guidelines limit the use of software within a reactor protection system and only allow very conservative claims to be made for its correctness and reliability. For a system to be classified as `highly reliable´ it has to incorporate diversity and redundancy of design and implementation

Keywords

fission reactor safety; nuclear engineering computing; quality control; software reliability; system recovery; CEGB guidelines; PES guidelines; diversity; hardware requirements; nuclear reactor protection system; programmable electronic systems; protection systems; redundancy; reliability calculation; software requirements/restrictions;

fLanguage

English

Publisher

iet

Conference_Titel

Software Requirements for High Integrity Systems, IEE Colloquium on

Conference_Location

London

Type

conf

Filename

209593