Experience with the application of HAZOP to computer-based systems

Author

McDermid, J.A. ; Nicholson, M. ; Pumfrey, D.J. ; Fenelon, P.

Author_Institution

Dept. of Comput. Sci., York Univ., UK

fYear

1995

fDate

25-29 Jun 1995

Firstpage

37

Lastpage

48

Abstract

This paper summarises the experience gained from application of Hazard and Operability Studies (HAZOP) and related techniques to four computer-based systems. Emphasis is placed on working practices and the integration of HAZOP-style analysis into a safety-oriented lifecycle. Two of the case studies are described in some detail. An industrial study is used to investigate working practices, highlighting a number of areas of concern with the traditional team approach. A second example is described using an alternative process known as Software Hazard Analysis and Resolution in Design (SHARD), showing its effectiveness on a technology demonstrator case study. This example also demonstrates the integration of our approach with other techniques such as our Failure Propagation and Transformation Notation (FPTN) and Software Fault Trees

Keywords

fault tolerant computing; real-time systems; software engineering; HAZOP; HAZOP-style analysis; computer-based systems; failure propagation and transformation notation; hazard and operability studies; safety-oriented lifecycle; software fault trees; software hazard analysis and resolution in design; Aerospace engineering; Application software; Computer industry; Computer science; Fault trees; Hazards; Image analysis; Software safety; Systems engineering and theory; Tail;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Assurance, 1995. COMPASS '95. Systems Integrity, Software Safety and Process Security. Proceedings of the Tenth Annual Conference on

Conference_Location

Gaithersburg, MD

Print_ISBN

0-7803-2680-2

Type

conf

DOI

10.1109/CMPASS.1995.521885

Filename

521885