5 - Introduction to Risk-Based Inspection

Question 1

Some failures have potentially serious consequences, but if the probability of the incident
is low, the risk may not warrant ,,,,,,

Answer 1

immediate or extensive action

Question 2

if the probability and consequence combination (risk) is high enough to be unacceptable, then a mitigation action to reduce the probability and/or the consequence of the event ,,,,,,

Answer 2

is appropriate.

Question 3

Typically, risk acceptability criteria are defined, recognizing that not every failure will lead to an undesirable incident with serious consequence (e.g.,,,,,,,) and that some serious consequence incidents have very low probabilities (e.g.,,,,,,,)

Answer 3

water leaks
rupture of a clean propane vessel

Question 4

An ISO-risk line represents a ,,,,,,,risk level

Answer 4

Constant

Question 5

All items that fall on or very near the ISO-risk line are ,,,,,,,,in their level of risk

Answer 5

roughly equivalent

Question 6

Often a risk plot is drawn using ,,,,,,

Answer 6

• log-log scales
• The RBI procedure can be applied as following approached
• Qualitative
• Quantitative
• Semi-Quantitative

Question 7

RBI is a methodology that uses ,,,,,,risk as a basis for prioritizing and managing the efforts of an inspection program

Answer 7

Relative

Question 8

An effective RBI program identifies and measures the ,,,,,,,associated with ascertaining the condition of the equipment

Answer 8

relative uncertainties

Question 9

Since RBI is based on relative risk, it is ,,,,,,,that analyses are performed consistently

Answer 9

Imperative

Question 10

,,,,,,, RBI approach requires data inputs based on descriptive information using engineering judgment, subject matter
expertise, and experience as the basis for the analysis of probability and COF

Answer 10

Qualitative

Question 11

In qualitative approach, Inputs are often given in ,,,,,,

Answer 11

data ranges instead of discrete values

Question 12

Although the ,,,,,,is less precise than more quantitative approaches

Answer 12

qualitative approach

Question 13

qualitative approach is effective in screening out,,,,,,

Answer 13

units and equipment with low risk;

Question 14

The qualitative approach may be used for any aspect of inspection plan development; however, the conservatism
generally associated with the more qualitative approach should be considered when ,,,, and ,,,,,

Answer 14

making final mitigation and
inspection plan decisions

Question 15

Quantitative programs are ,,,,,,approaches where numerical values are calculated and more ,,,,,,

Answer 15

model-based
discreet input data used

Question 16

Quantitative RBI outlines a methodology for prioritizing equipment risk in ,,,,,, or ,,,,,,, in addition to calculating discrete risk values for prioritization from ,,,,,,,

Answer 16

a risk matrix or ISO-risk plot
higher to lower risk

Question 17

Semi-quantitative is a term that describes any approach that has aspects derived from ,,,,, and,,,,

Answer 17

both the qualitative and quantitative approaches.

Question 18

Accuracy is a function of the,,,,,,, and,,,,,,

Answer 18

analysis methodology, the quality of the data
consistency of application

Question 19

Precision is a function of,,,,,, and ,,,,,,

Answer 19

the selected metrics and computational methods

Question 20

Quantitative analysis uses ,,,,,,to calculate probabilities and consequences of failure

Answer 20

logic models

Question 21

It is important that results from these logic models are validated by ,,,

Answer 21

expert judgment.

Question 22

The mechanical integrity and functional performance of equipment depends on the ,,,,,and ,,,,,

Answer 22

suitability of the equipment to operate safely and reliably under the normal
abnormal (upset) operating conditions to which the equipment is exposed

Question 23

Since risk is ,,,

Answer 23

Dynamic

Question 24

One objective of RBI is to ,,,,,

Answer 24

direct the management decision-making process of prioritizing resources to manage risk

Question 25

Although inspection does not reduce risk directly, it is a risk management activity (provider of new information) that may lead to ,,,,

Answer 25

risk reduction

Question 26

The primary product of an RBI effort should be an ,,,,,for each equipment item evaluate

Answer 26

inspection plan

Question 27

RBI is a ,,,,, and ,,,,,, process for planning and evaluating inspection activities for pressure equipment

Answer 27

logical and structured