Arguing safety with Problem Oriented Software Engineering

Hall, Jon G.; Mannering, Derek and Rapanotti, Lucia (2007). Arguing safety with Problem Oriented Software Engineering. Technical Report 2007/04; Department of Computing, The Open University.

DOI: https://doi.org/10.21954/ou.ro.00016067

Abstract

Standards demand that assurance cases support safety critical developments. It is widely acknowledged, however, that the current practice of post-hoc assurance-that the product is built and only then argued for safety-leads to many engineering process deficiencies, extra expense, and poorer products. This paper shows how the Problem Oriented Software Engineering framework supports the concurrent design of a safe product and its safety case, by which these deficiencies can be addressed. The basis of the paper is a real development, undertaken by the second author of this paper, of safety-related subsystems of systems flying in real aircraft. The case study retains all essential detail and complexity.

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