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HAZOP and SEQHAZ® methods as input data producers to Safety Integrity Level evaluations

Björkhem, Daniel (2008) In LUTVDG/TVBB--5250--SE VBR920
Division of Fire Safety Engineering
Risk Management and Safety Engineering
Division of Risk Management and Societal Safety
Abstract
Today hazard studies are a self evident part of a project plan while creating a new process or making changes in an existing one in the chemical industry. Therefore it is important to make the hazard studies as efficient as possible. The objective for this thesis was to optimise the hazard study processes based on the main methods presently used at Neste Oil Oyj, Neste Jacobs Oy and Borealis Polymers Oy. This thesis focuses on SEQHAZ® and HAZOP methods as input data for safety integrity level (SIL) evaluation with risk graph and LOPA (layer of protection analysis) methods. The hazard study process has been investigated by interviews, participation in hazard studies, studying of hazard reports and a seminar day. Based on the results three... (More)
Today hazard studies are a self evident part of a project plan while creating a new process or making changes in an existing one in the chemical industry. Therefore it is important to make the hazard studies as efficient as possible. The objective for this thesis was to optimise the hazard study processes based on the main methods presently used at Neste Oil Oyj, Neste Jacobs Oy and Borealis Polymers Oy. This thesis focuses on SEQHAZ® and HAZOP methods as input data for safety integrity level (SIL) evaluation with risk graph and LOPA (layer of protection analysis) methods. The hazard study process has been investigated by interviews, participation in hazard studies, studying of hazard reports and a seminar day. Based on the results three models for optimising the process are suggested, two based on LOPA and the third based on risk graph. LOPA was found to be the best method for SIL evaluation and the suggested models are a step towards performing both the HAZOP/SEQHAZ® study and the SIL evaluation in the same session. (Less)
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author
Björkhem, Daniel
supervisor
organization
course
VBR920
year
type
H2 - Master's Degree (Two Years)
subject
keywords
evaluation, HAZOP, hazard study, LOPA, process industry, risk graph, SEQHAZ, SIL
publication/series
LUTVDG/TVBB--5250--SE
report number
5250
ISSN
1402-3504
language
English
id
1689072
date added to LUP
2011-01-20 17:48:27
date last changed
2014-03-10 10:40:34
@misc{1689072,
  abstract     = {Today hazard studies are a self evident part of a project plan while creating a new process or making changes in an existing one in the chemical industry. Therefore it is important to make the hazard studies as efficient as possible. The objective for this thesis was to optimise the hazard study processes based on the main methods presently used at Neste Oil Oyj, Neste Jacobs Oy and Borealis Polymers Oy. This thesis focuses on SEQHAZ® and HAZOP methods as input data for safety integrity level (SIL) evaluation with risk graph and LOPA (layer of protection analysis) methods. The hazard study process has been investigated by interviews, participation in hazard studies, studying of hazard reports and a seminar day. Based on the results three models for optimising the process are suggested, two based on LOPA and the third based on risk graph. LOPA was found to be the best method for SIL evaluation and the suggested models are a step towards performing both the HAZOP/SEQHAZ® study and the SIL evaluation in the same session.},
  author       = {Björkhem, Daniel},
  issn         = {1402-3504},
  keyword      = {evaluation,HAZOP,hazard study,LOPA,process industry,risk graph,SEQHAZ,SIL},
  language     = {eng},
  note         = {Student Paper},
  series       = {LUTVDG/TVBB--5250--SE},
  title        = {HAZOP and SEQHAZ® methods as input data producers to Safety Integrity Level evaluations},
  year         = {2008},
}