A Method of Calculating Safety Integrity Level for IEC 61508 Conformity Software

Author

Fujiwara, Takaji ; Kimura, Mitsuhiro ; Satoh, Yoshinobu ; Yamada, Shigeru

Author_Institution

SRATECH Lab. Inc., Kato, Japan

fYear

2011

fDate

12-14 Dec. 2011

Firstpage

296

Lastpage

301

Abstract

In the functional safety standard (IEC 61508), development methods and quantitative analytical methods are defined for establishment of safety-related systems. However, only development methods are recommended to establish the software of safety-related systems. That is, the safety integrity level for software is determined only by the number of the development methods applied to practical safety-related system development. This is not reasonable to evaluate the safety integrity level, because various risk factors should be taken up. In this paper, we propose how to calculate the safety integrity level for software. Especially, we propose the calculation method based on software reliability growth models that have been utilized for many years in the large-scale system development.

Keywords

safety-critical software; IEC 61508 conformity software; functional safety standard; large-scale system development; safety integrity level; safety-related system development; software reliability growth model; IEC standards; Mathematical model; Safety; Software; Software reliability; Testing; IEC 61508; calculation method; functional safety; software reliability growth model; software safety integrity level;

fLanguage

English

Publisher

ieee

Conference_Titel

Dependable Computing (PRDC), 2011 IEEE 17th Pacific Rim International Symposium on

Conference_Location

Pasadena, CA

Print_ISBN

978-1-4577-2005-5

Electronic_ISBN

978-0-7695-4590-5

Type

conf

DOI

10.1109/PRDC.2011.50

Filename

6133101