5 - Introduction to Risk-Based Inspection Flashcards
Key Elements of an RBI Program:
Key elements that exist in any RBI program include; ,,,
1- maintaining documentation & analysis update
2- documented method for POF
3- documented method for COF
4- maintaining documentation, methodology for
managing risk through inspection & mitigation
Consequence and Probability for RBI:
An ISO-risk line represents ,,,,,
a constant risk level
Types of RBI Assessment:
The RBI procedure can be applied ,,,,, or by using aspects of both ,,,,,,,
qualitatively, quantitatively,
i.e. semi-quantitatively
Types of RBI Assessment:
Each (POF & COF) approach provides a systematic way to screen for ,,,,, /,,,,, /, and ,,,,,, for more in-depth inspection or analysis.
risk
identify areas of potential concern
develop a prioritized list
Types of RBI Assessment: Each approach (POF & COF) develops a ,,,,,,measure to be used for evaluating separately the POF and the potential COF
risk ranking
Types of RBI Assessment:
These two approaches values are then combined to estimate,,,,,,
risk of failure.
Types of RBI Assessment:
consistency of approach will be vital to,,,,,, from one assessment to the next
comparing results
Types of RBI Assessment:
The spectrum of risk analysis should be considered to be a ,,,,,, with qualitative and quantitative approaches
being the two extremes of the continuum and everything in between being a ,,,,,,approach
continuum
semi-quantitative
Risk-Based Inspection Analysis:
RBI is a methodology that uses ,,,,, as a basis for prioritizing and managing the efforts of an inspection
program
relative risk
Risk-Based Inspection Analysis:
It provides focus for inspection activity to specifically
address threats to the,,,,,,,, and the equipment’s capacity to operate as intended
integrity of the asset
Risk-Based Inspection Analysis:
Risk mitigation plans may include options in addition to or other than inspection such as
- changes in materials of construction,
- use of corrosion inhibitors,
- changes in operating conditions and fluids,
- and/or installation of liners and coatings
Qualitative Approach :
This approach requires data inputs based on ,,,,,, / ,,,,,,,, and experience as the basis ,,,,,,,,,
descriptive information using engineering judgment,
subject matter expertise
for the analysis of probability and COF
Qualitative Approach :
Inputs are often given in ,,,,, instead of discrete values
data ranges
Qualitative Approach :
The accuracy of results from a qualitative analysis is dependent on ,,,,, and ,,,,, and team members.
the background
expertise of the risk analysts
Qualitative Approach :
it is effective in screening out units and equipment with ,,,,,
low risk
Quantitative Approach:
Quantitative programs are ,,,,, approaches where ,,,,, are calculated and more discreet input data used.
model-based
numerical values
Quantitative Approach:
A quantitative approach generally uses ,,,,,, to calculate risk and develop inspection program recommendations
a software program
Quantitative Approach:
Quantitative RBI outlines a methodology for prioritizing equipment risk in a ,,,, or I,,,,, in addition to calculating discrete risk values for prioritization from higher to lower risk.
risk matrix
SO-risk plot
Semi-quantitative Approach:
Semi-quantitative is a term that describes any that has aspects derived from both the ,,,,,, and,,,,,
qualitative approach
quantitative approaches
Semi-quantitative Approach:
The results are usually given in ,,,, categories or as ,,,
consequence and probability
risk numbers
Continuum of Approaches:
RBI study typically uses aspects of qualitative, quantitative, and semi-quantitative approaches. These
RBI approaches are not considered as competing but rather as ,,,,,
complementary
Precision vs Accuracy :
Accuracy is a function of the ,,,,,, / ,,,,,,, and ,,,,,,
analysis methodology
the quality of the data
consistency of application
Precision vs Accuracy :
precision is a function of the ,,,,,, and ,,,,,,
selected metrics
computational methods
Precision vs Accuracy :
Risk presented as a precise ,,,,,,,(as in a quantitative analysis) implies a greater level of accuracy when compared to a ,,,,,, (as in a qualitative analysis)
numeric value
risk matrix
