The Risk Assessment Methods are introduced today. Basically, these Risk Assessment Methods can be divided into two categories; quantitative [LOPA, OLF, Fault tree, etc] and qualitative [ risk graph and risk matrix] methods. Each method has their own advantages and disadvantages.
LOPA[Layer of Protection Analysis] is a semi-quantitative risk analysis technique. It lies in between a HAZOP and a quantitative risk assessment (QRA) in terms of its rigorousness. This technique evaluates risks by orders of magnitude of the selected accident scenarios and builds on the information developed in qualitative hazard evaluation. This method is quite new and will use more frequent in future.
As a conclusion, i learnt the fundamental key terms for starting the SIS study to determine the SIL (Safety Integrity Level). High level of SIL means that more cost spend in audit, testing, and maintenance for mitigating the risks.
LOPA[Layer of Protection Analysis] is a semi-quantitative risk analysis technique. It lies in between a HAZOP and a quantitative risk assessment (QRA) in terms of its rigorousness. This technique evaluates risks by orders of magnitude of the selected accident scenarios and builds on the information developed in qualitative hazard evaluation. This method is quite new and will use more frequent in future.
As a conclusion, i learnt the fundamental key terms for starting the SIS study to determine the SIL (Safety Integrity Level). High level of SIL means that more cost spend in audit, testing, and maintenance for mitigating the risks.
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