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A Bayesian decision-theoretic decision-making framework for integrated vehicle safety systems is introduced. The framework tries to address the increasing need for introduction of optimal decision-making to integrated vehicle safety. The framework tries to capture all the interdependencies between systems in one optimisation problem by designing appropriate risk functions. This is achieved by incorporating...
The standard GB/T 20438 contains a lot of useful information and guidance for safety improvement regarding the use of safety systems. However, some of the basic concepts and methods for loss of safety qualification are somewhat confusing in domestic. This paper presents the concepts of safety life cycle, risk and safety integrity level, and all that concepts are clarified to avoid misunderstanding...
ALSTOM Transport has been a major actor in the Railway Industry for decades and has always been committed with its Clients and their National State Authorities, to deliver Railway Products and Maintenance Services with the highest standard of Railway Safety. Rail Business Actors must remain vigilant and continue to play a pro-active role to maintain the level of public safety confidence. High levels...
Protecting the security of the dam is a vital problem for the reasonable use of the water resources, so it is important and meaningful to research methods of assessing the safety of dam for which is related with the national economy and the people's livelihood, and it is necessary to build a system to estimate the security risk of dams. The dam failure disaster risk is regarded as main researching...
Based on the ideology of "using the monitor data to reflect the production safety and using the risk analysis and safety evaluation methods to guide safety management to realize the objection of mine coal safety state warning and assistant decision-making support system", with Bofang coal mine of Shanxi Orchids Corporation's practical experience in safety state management, we set up a warning...
A multi-state approach to defining basic notions of the system safety analysis is proposed. A system safety function and a system risk function are defined. A basic safety structure of a multi-state series system of components with degrading safety states is defined. For this system the multi-state safety function is determined. The proposed approach is applied to the evaluation of a safety function,...
According to the policies and laws about occupational safety and health, road transportation enterprises should carry out safety production standardization. Based on modern safety management theory, risk theory and system theory, the safety problems of road transportation enterprises are analyzed through the qualitative and quantitative methods, and characters of passenger stations, road transportation...
Programmable logic controllers (PLCs) are increasingly used in industrial automation projects. By their nature, in these applications safety is a crucial requirement. However, risk prevention adds costs to the PLC system, which means that a balance between costs and risks have to be found. A convenient compromise between these two criteria is provided by risk mitigation, but only to an acceptable...
This paper proposes a new figure of merit (FOM) for evaluating safety integrity levels (SIL) for safety instrumented systems (SIS). Currently, SIL ratings are based on two separate tables - one for low process demands and one for high process demands. The proposed FOM, probability of an accident as a function of time, PAC(t), unifies the two separate tables into a single table and extends the concept...
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