Superstructure work of the toll flyover construction is one works that have a high level risk, especially when erection girder passes over existing road. This study aims to identify hazards on using HIRARC and HAZOP methods. Using these two methods requires implementation questionnaire surveying, at least 30 respondents with 34 successfully gathered. The results showed there were 36 possible wh...

The increasing digitalization and standardization within the process industry lead to a high availability of digital, machine-readable processes plant descriptions. In particular, publication DEXPI standard provides digital representation topologies including complete description all specifications. early planning phases, this can be used as basis for an automated safety assessment since signif...

Os eventos impactantes ao meio ambiente na indústria do petróleo não são raros. Tanto uma análise retrospectiva das ocorrências, quanto um gerenciamento de risco adequado essenciais para a mitigação, ou até mesmo erradicação, desses acontecimentos. O artigo apresenta variedade metodologias, técnicas e índices utilizados no risco, como FRAM, STAMP, QRA, HAZOP, FTA, ETA, APP, F&EI, CEI, SWeHI...

Software fault tree analysis (SFTA) [1] is widely used for analyzing software requiring high-reliability. In SFTA, experts predict failures of system through HAZOP (Hazard and Operability study) or FMEA (Failure Mode and Effects Analysis) and draw software fault trees about the failures. Quality and cost of the software fault tree, therefore, depend on knowledge and experience of the experts. T...

The paper deals with the development of a simulator for approaching human errors in complex operational frameworks (e.g., plant commissioning). The aim is to integrate the quantification capabilities of the so-called ‘first-generation’ human reliability assessment (HRA) methods with a cognitive evaluation of the operator. The simulator allows analysing both error prevention and error recovery. ...

Cyber-physical systems tightly integrate physical processes and information and communication technologies. As today’s critical infrastructures, e.g., the power grid or water distribution networks, are complex cyber-physical systems, ensuring their safety and security becomes of paramount importance.Traditional safety analysis methods, such as HAZOP, are ill-suited to assess these systems. Furt...