Models, modelling and modellers: an application to risk analysis

Wahlström, Björn

doi:10.1016/0377-2217(94)90290-9

Cited by 26 publications

(8 citation statements)

References 4 publications

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“…One aspect is that a model should be refined enough not to be trivial, but simple enough to highlight only the essential characteristics of the real system (Wahlström, 1994). In the case studies, the model was used at group meetings and in the final reports.…”

Section: Modelling and Describing Safetymentioning

confidence: 99%

Analysis of safety functions and barriers in accidents

Harms-Ringdahl

2009

Safety Science

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A new method for accident investigations is presented. It is based on the concept of safety function, which is defined as a technical or organisational function, a human action or a combination of these, that can reduce the probability and/or consequences of accidents and other unwanted events in a system. An analysis starts with the identification of safety functions related to the event. These are structured; an assessment is then made of whether they worked or not, and finally safety improvements are proposed.The method has been applied to five different incidents, coming from different types of work sites, such as electrical power distribution, a railway, and hospitals. For each case, around 40 safety functions were identified, of which less than half had worked. It was found that technical, organisational and human safety features existed side-by-side. The method supports a consistent analysis of a variety of safety features, and can integrate them into a common format.Each system contained formal and informal elements in parallel, often overlapping. This can be seen as safety redundancy, which makes the safety system less vulnerable to change that supports the preservation of safety. It might be more adequate to describe this as a safety web rather than a distinct set of barriers, and there is also an analogy with the concept of safety resilience.

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Section: Modelling and Describing Safetymentioning

confidence: 99%

Analysis of safety functions and barriers in accidents

Harms-Ringdahl

2009

Safety Science

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“…One aspect is that a model should be refined enough not to be trivial, but simple enough to bring forward only the essential characteristics of the real system (Wahlström, 1994). In this case, the main advantages of the model appeared to be that:…”

Section: Modelling Safety Featuresmentioning

confidence: 99%

Assessing safety functions—results from a case study at an industrial workplace

Harms-Ringdahl¹

2003

Safety Science

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This study is concerned with how safety characteristics at industrial installations can be modelled and evaluated. The starting point was the concept of safety function, which is defined as a technical, organisational or combined function that can reduce the probability and/or consequences of accidents and other unwanted events in a system. A tentative theoretical framework has been developed, which has been applied in a new method called Safety Function Analysis. A workplace in process industry was analysed in the form of a case study. One result of the application was a model of safety functions in the workplace, including 54 functions. These have been evaluated, and system improvements have been proposed.A detailed comparison was made with the results of two other methods for safety analysisDeviation and Energy analysis-applied to the same workplace. Safety function analysis gave essential supplementary information, and especially supported improvement of management issues, both formal and informal. It is concluded that the safety function concept worked well in the practical analysis of safety in the studied system. There is a need for further improvement of the theoretical framework, and of the method.

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“…business, politic, technology, legal etc. ( 0 ≤ P ≤ 1) [10] -I denotes the impact of a risk in order to highlight its effect on the organization. This parameter is important to the normal functioning of a process has one of the following values: 1 (less important), 3 (moderately important) and 5 (very important).…”

Section: Quantifying the Risk Exposurementioning

confidence: 99%

A quantitative and qualitative approach to manage risks in the supply chain operations reference

Stephan

Badr

2007

2007 2nd International Conference on Digital Information Management

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Businesses that do not take risks do not make money. As businesses continually evolve, so do risks. Risk Management becomes a crucial part of every successful business model to deal with uncertain and risky socio-economic changes. The emergence of supply chains which coordinate organizations, people, activities, information and resources dramatically increases risk crises. Efforts have resulted in process reference models, such as the Supply Chain Operations Reference (SCOR), which measures total supply chain performance. Although the SCOR model is designed and maintained to support supply chains of various complexities across multiple industries, the current version does not provide a basis for the Risk Management of projects and decision making workload. This paper attempts to propose an approach to bridge the gap between the SCOR model and Risk Management. Its underlying approach focuses on the types of threats in SCOR implementation projects and applies empirical benchmarks to measure risks in process elements.

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Models, modelling and modellers: an application to risk analysis

Cited by 26 publications

References 4 publications

Analysis of safety functions and barriers in accidents

Analysis of safety functions and barriers in accidents

Assessing safety functions—results from a case study at an industrial workplace

A quantitative and qualitative approach to manage risks in the supply chain operations reference

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