Basic Aspects of the Reliability of Control System Software
https://doi.org/10.1134/S2304487X21050126
Abstract
Reliability is one of the most important quality parameters. Since the software is an integral part of the process control system, the failure of software components causes a serious decrease in the product reliability and can cause the loss of the required function. The main sources of control system software and hardware failures in the nuclear industry are described and methods for preventing malfunctions are considered. Nevertheless, experience in software development allows us to highlight the most common errors in its design. The consolidated reasons for software failures include imperfection of the technical task for programming, errors of the programmer developing software modules, errors of operating personnel using software, changes in software operating conditions, the possibility of the appearance of unacceptable arithmetic operations, and an insufficiently complete analysis of the properties of the system in which the software is functioning. Errors made during programming cannot always be quickly noticed when analyzing the text of a program module. This is especially true of program modules having complex logical operations. Therefore, during verification, one should be guided by the documents intended to ensure the quality of the program module, which contain recommendations for usage typical software designs, sizes of software modules, etc.
About the Authors
A. A. Zvonareva
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
115409
Moscow
A. O. Tolokonskiy
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
115409
Moscow
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Review
For citations:
Zvonareva A.A., Tolokonskiy A.O. Basic Aspects of the Reliability of Control System Software. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2021;10(5):429-435. (In Russ.) https://doi.org/10.1134/S2304487X21050126
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