UML modelling concepts of HAZOP to enhance the ability to identify emerging risks

M. Ström (Corresponding Author), Raija Koivisto, D. Andersson

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Unified Modelling Language (UML) has a graphical notation for 13 different types of diagrams and can be used as a general modelling tool. Well-known examples of diagram types are class diagrams for modelling classes that can be instanced into objects, state machine diagrams for modelling states in systems and activity diagrams for modelling process flows. A literature survey shows that UML has been used to model concepts and methodologies of risk assessment and risk management. One example is the Coras Framework. The international standard CEI IEC 61882 Hazard and operability (HAZOP) studies describes concepts for investigating and detecting possible hazards in systems. In CEI IEC 6882, guide words like ‘More’ and ‘Less’ are applied to system parameters to invoke deviations in the system and assess possible hazards due to the deviation from the design intent. In this paper, we have used UML to model concepts of CEI IEC 61882 Hazards and operability studies. Diagrams of UML were used to show dependencies and relations between parts of the target system and concepts of CEI IEC 61882. Extensions of UML are suggested to better capture and display the concepts of CEI IEC 61882, the results of a HAZOP study and emerging risk. These extensions are referred to as UML for emerging risks (UML-ER).
Original languageEnglish
Pages (from-to)421-432
Number of pages12
JournalJournal of Risk Research
Volume16
Issue number3-4
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

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Unified Modeling Language
Hazards
ability
risk management
risk assessment
Risk management
Risk assessment
Hazard
Diagrams
Unified modeling language
Language modeling
methodology
Modeling

Keywords

  • Emerging risks
  • Hazop
  • UML

Cite this

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title = "UML modelling concepts of HAZOP to enhance the ability to identify emerging risks",
abstract = "Unified Modelling Language (UML) has a graphical notation for 13 different types of diagrams and can be used as a general modelling tool. Well-known examples of diagram types are class diagrams for modelling classes that can be instanced into objects, state machine diagrams for modelling states in systems and activity diagrams for modelling process flows. A literature survey shows that UML has been used to model concepts and methodologies of risk assessment and risk management. One example is the Coras Framework. The international standard CEI IEC 61882 Hazard and operability (HAZOP) studies describes concepts for investigating and detecting possible hazards in systems. In CEI IEC 6882, guide words like ‘More’ and ‘Less’ are applied to system parameters to invoke deviations in the system and assess possible hazards due to the deviation from the design intent. In this paper, we have used UML to model concepts of CEI IEC 61882 Hazards and operability studies. Diagrams of UML were used to show dependencies and relations between parts of the target system and concepts of CEI IEC 61882. Extensions of UML are suggested to better capture and display the concepts of CEI IEC 61882, the results of a HAZOP study and emerging risk. These extensions are referred to as UML for emerging risks (UML-ER).",
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UML modelling concepts of HAZOP to enhance the ability to identify emerging risks. / Ström, M. (Corresponding Author); Koivisto, Raija; Andersson, D.

In: Journal of Risk Research, Vol. 16, No. 3-4, 2013, p. 421-432.

Research output: Contribution to journalArticleScientificpeer-review

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