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To date, top-down efforts to evolve and structure privacy engineering knowledge have tended to reflect common systems engineering/development life cycle activities. A different approach suggests a particular need for technical analytical methods. To help address this need, this paper proposes to adapt for privacy engineering an existing technique, System-Theoretic Process Analysis (STPA), developed...
Refining units are easy to be flammable and explosive. There will be great security risk in applying advanced process control (APC) system online in refining units. The method of HSE management, which emphasizes hazard analysis and risk control, will greatly decrease the possibility of the risk of the APC project. Experiences in previous APC projects and HSE management method are summarized in this...
Often misunderstood, risk categories are briefly discussed, and the significance of risk categories 3 and 4 is discussed with the objective of clarifying their application.
As the substitute of mechanical hydraulic governing system, steam turbine digital electro-hydraulic control system presents different maintenance characteristics. If the traditional maintenance strategy is still adopted, that is the replacement or inspection time determined just according to overhaul or minimal maintenance standard items, the result is either maintenance cost increasing due to excessive...
In this work, we present a results from case study on testing a highly configurable, safety-critical system from the railway domain using model-based risk-oriented testing. In the construction of the system and test models, we face the following problems: (i) A domain expert will usually not be knowledgeable in the construction of system models, but has very detailed knowledge which configurations...
Arguing that an autonomous mobile system is sufficiently safe to operate in presence of other vehicles and objects is an important element in development of such systems. Traditional approach to assure safety is to distinguish between safe and unsafe area and prevent the autonomous vehicle from entering the unsafe area. The paper presents a model of autonomous vehicle control system which uses risk...
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