Automating HAZOP studies using D-higraphs

Rodríguez, Manuel; Mata, José Luis de la

doi:10.1016/j.compchemeng.2012.06.007

Cited by 25 publications

(6 citation statements)

References 21 publications

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“…Some approaches aimed to integrate computer-aided design (CAD) software with automatic hazard identification. More recent developments used sophisticated graph-based methods (see [10]- [12]). Zhao et al [13] used case-based reasoning to draw conclusions based on previous situations.…”

Section: Brief State Of Researchmentioning

confidence: 99%

Computer-Aided Hazop Studies: Knowledge Representation and Algorithmic Hazard Identification

Single¹,

Schmidt²,

Denecke³

2019

WIT Transactions on the Built Environment

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Safety assessments are conducted to identify and assess the risks that arise from processes, process plants or technical systems in general. This includes the identification of potential hazards posed by plants. One recognized and generally accepted method for this is the hazard and operability (HAZOP) method. It is a human-centered process that is time-and labor-intensive. In the presented research approach, the structure of a computer-aided HAZOP system is described. The identification of hazards and malfunctions within technical systems is knowledge-intensive. Within this research approach, it transpired that the semantically correct and detailed modeling of deviation cause and effect relationships in the form of ontologies are of particular importance to draw correct conclusions. Thus, the guiding principles of a knowledge representation framework are described from a process safety perspective, and serve as a basis for the automatic identification of hazards. An integral understanding of the process, process plant and involved substances requires extensive knowledge. The way in which this knowledge is used and the search for hazards is conducted has an influence on the completeness of the results. Within this approach, the hazard/malfunction identification is conducted on different layers of abstraction to improve the efficiency of the search algorithm. The proposed methodology is applied within a case study to a technical system that consists of a compressor, vessel and valve. The first results demonstrate that the proposed method is well-suited to understand and identify the context of hazards and malfunctions. Thus, a system for computer-aided HAZOP studies can be used to assist HAZOP conductors in performing hazard analysis while increasing the speed of safety assessments and serving as a decision support system.

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Section: Brief State Of Researchmentioning

confidence: 99%

Computer-Aided Hazop Studies: Knowledge Representation and Algorithmic Hazard Identification

Single¹,

Schmidt²,

Denecke³

2019

WIT Transactions on the Built Environment

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“…Thereafter, the same authors developed an automated HAZOP analysis tool for chemical processes called PHASUITE and based on Petri Nets [4]. In the past few years, researchers have concentrated on combining HAZOP with dynamic simulation [5], with Signed Directed Graph [6] or with techniques able to catch the structural aspects of process plants, such as Digraphs [7], D-higraphs [8], Case-Based Reasoning, [9], and Cause-Implication Diagrams [10,11]. Most recent studies, on HAZOP methodology and its automation, was done by Lotero-Herranz and Galàn [12].…”

Section: Literature Reviewmentioning

confidence: 99%

A Behaviour Model for Risk Assessment of Complex Systems Based on HAZOP and Coloured Petri Nets

Arena

Kiritsis

Trapani

2015

IFIP Advances in Information and Communication Technology

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To support the knowledge of specialists during a HAZOP brainstorming session, a support system, which is able to automatically generate a preliminary HAZOP report was developed. The support system, which is based on Coloured Petri Nets (CPNs), simulates the behaviour of the system when different abnormal scenarios occur. The research demonstrates that integration of CPNs and HAZOP is very effective to obtain a smart tool for risk assessment of complex systems, improving the HAZOP analysis procedures.

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“…However, certain analyses require the use of deviations and not only failures, like HAZOP studies (Rodriguez and De la Mata, 2012). There are a series of causation rules implemented that provides relating two events which allows us to track the evolution and propagation of failures across the system.…”

Section: Causal and Qualitative Reasoningmentioning

confidence: 99%