Inherent Risk Assessment (IRA)

A.M., Shariff and C.T., Leong (2008) Inherent Risk Assessment (IRA). In: 2008 AIChE Spring National Meeting, Conference, 6 April 2008 through 10 April 2008, New Orleans, LA.

[img] PDF
Restricted to Registered users only


Official URL: http://www.scopus.com/inward/record.url?eid=2-s2.0...


Quantitative Risk Assessment (QRA) has been a very popular and useful methodology which is widely acceptable by the industry over the past few decades. QRA is typically carried out at a stage where complete plant has been designed and sited. At that time, the opportunity to include inherent safety design features is limited and may incur higher cost. This paper proposes a new concept to evaluate risk inherent to a process owing to the chemical it uses and the process conditions. The risk assessment tool is integrated with process design simulator (HYSYS) to provide necessary process data as early as the initial design stages, where modifications based on inherent safety principles can still be incorporated to enhance the process safety of the plant. The risk assessment tool consists of two components which calculate the probability and the consequences relating to possible risk due to major accidents. A case study on the potential explosion due to the released of flammable material demonstrates that the tool is capable to identify potential high risk of process streams. Further improvement of the process design is possible by applying inherent safety principles to make the process under consideration inherently safer. Since this tool is fully integrated with HYSYS, re-evaluation of the inherent risk takes very little time and effort. The new tool addresses the lack of systematic methodology and technology, which is one of the barriers to designing inherently safer plants.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Design; Flammable materials; Process control; Process design; Process engineering; Risk management; Risk perception; Risks; Springs (components); Consequence estimation; Inherent risk; Inherent safety; Inherently safer design; Quantitative risk assessment; Risk assessment
Subjects:T Technology > TP Chemical technology
Departments / MOR / COE:Departments > Chemical Engineering
ID Code:227
Deposited By: Prof Dr Azmi Mohd Shariff
Deposited On:25 Feb 2010 10:23
Last Modified:19 Jan 2017 08:26

Repository Staff Only: item control page

Document Downloads

More statistics for this item...