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Document ID (ISN)107506
CIS number 08-186
ISSN - Serial title 0120-5684 - Protección y seguridad
Year 2007
Convention or series no.
Author(s) De Fex R.L.
Title Between HAZOP and FTA: Hazard analysis based on protection layers - LOPA
Original title Entre HAZOP y FTA: Análisis de riesgos por capas de protección - LOPA [in Spanish]
Bibliographic information July-Aug.2007, Vol.53, No.314, p.32-39. Illus. 6 ref.
Abstract This article describes a hazard analysis and evaluation tool based on layers or levels entitled LOPA (layer of protection analysis), a semi-quantitative instrument with improved objectivity for controlling risks in process industries. It is an intermediate between the HAZOP (hazard and operability) and FTA (fault tree analysis) methods. Its main function is to select high-risk scenarios defined as a set of causes and specific consequences though a preliminary analysis of risks that can be avoided or mitigated by means of safeguards consisting of existing layers of protection, or if these layers have a high failure probability, by means of additional and more effective layers of protection.
Descriptors (primary) hazard evaluation; plant safety organization; major hazards
Descriptors (secondary) safety consciousness; analysis of accident causes; causes of accidents; human behaviour; psychology of work organization; human factors
Document type D - Periodical articles
Country / State or ProvinceColombia
Broad subject area(s) Fires, explosions and major hazards
General safety, health and conditions of work
Browse category(ies) Major hazards
Risk evaluation