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1. Introducing the LOPA method
1.1 Method objective
The LOPA method is a semi-quantitative method developed with a view to :
assess the adequacy between the barriers implemented and the level of risk targeted;
determine the need for new barriers;
define the minimum "requirements" for the probability of failure of the barriers to be put in place in the event that the existing barriers are unable to justify an acceptable risk;
assess the residual frequency of occurrence of an accident scenario.
The LOPA method is also used to identify the human actions (operator responses and actions) which...
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Introducing the LOPA method
Parallels between LOPA and other risk analysis methods
Bibliography
Websites
LOPA articles (CCPs) https://www.aiche.org/ccps/resources/tools/lopa
Software tools
Technical University of Denmark – DTU Management EngineeringSafety Barrier Manager [Software]
Standards and norms
- Sécurité fonctionnelle des systèmes électriques/électroniques/électroniques programmables relatifs à la sécurité - CEI/IEC 61508 - 1998
- Functional safety – Safety instrumented systems for the processing industry - CEI/IEC 61511 - 2005
Regulations
Arrêté ministériel du 29 septembre 2005 relatif à l'évaluation et à la prise en compte de la probabilité d'occurrence, de la cinétique et de l'intensité des effets et de la gravité des conséquences des accidents potentiels dans les études de dangers des IC soumises à autorisation (Ministerial decree of September 29, 2005 on the assessment and consideration of the probability of occurrence, the kinetics and intensity of effects...
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