Industry is increasingly adopting software and system safety standards that mandate the use of hazard logs in the development and operation of safety critical systems. Hazard logs are used to record and track the results of hazard analysis and risk assessment throughout the lifecycle of the system. Even relatively simple systems give rise to large amounts of information and the need for tools to support the management of hazard logs. Def(Aust) 5679 is the Australian Department of Defence's standard for procurement of computer-based safety critical systems. Def(Aust) 5679 has particular requirements for the nature of the information that needs to be tracked in the hazard log, and on the way that levels of trust (LOT) and safety integrity levels (SIL) are assigned to safety requirements. This paper describes a prototype tool, called HazLog, that has been built on top of the DOORS tool in order to support the Def(Aust) 5679 hazard management process. DOORS is a requirements manageme...
Christian Hamoy, David Hemer, Peter A. Lindsay