API 580 emphasizes the importance of identifying risk drivers as part of a systematic method to manage risks:
“Development of an appropriate inspection program to address key risk drivers. A method to systematically manage risks associated with the operation of process equipment.â€
Understanding risk drivers is necessary to target mitigation actions effectively and to ensure that resources are allocated based on what contributes most to the risk.
[Reference: API 580, 2nd Edition (2016), Section 5.3.2, —]
Question # 26
One of the significant differences between qualitative and semi-quantitative COF analysis for RBI is that the results of a semi-quantitative analysis are usually:
Section 5.3.5 of API 580 explains the nature of semi-quantitative RBI analysis:
“Semi-quantitative… is geared to obtain the major benefits of the previous two approaches (e.g. speed of the qualitative and rigor of the quantitative)… The results are usually given in consequence and probabilitycategories or as risk numbers, but numerical values may be associated with each category to permit the calculation of risk and the application of appropriate risk acceptance criteria.â€
Therefore, semi-quantitative assessments often produce risk values in a numeric format, allowing comparative decision-making. This distinguishes them from purely qualitative assessments that rely on subjective categories like “High/Medium/Low.â€
[Reference: API 580, 2nd Edition (2016), Section 5.3.5, ===========]
Question # 27
Unmitigated risk is defined as the:
A.
risk prior to mitigation activities.
B.
risk that cannot be mitigated.
C.
area below the ISO risk line.
D.
difference between absolute risk and relative risk.
“Unmitigated risk: The risk prior to mitigation activities.â€
This definition is also applied in Section 5.6.2 where RBI plans must address unmitigated risk and propose mitigation strategies if it is deemed unacceptable.
Other options are either incorrect interpretations or irrelevant to RBI methodology.
[Reference:API 580, 2nd Edition (2016), Section 3.1.63 and 5.6.2, ]