API RP 581 - 3rd Ed.2016 - Add.2-2020 - Risk-Based Inspection Methodology

PART 1—INTRODUCTION TO RISK-BASED INSPECTION METHODOLOGY 1-31
Risk
Total Risk Without
Inspection at the
Risk Target Date
C
Risk Target
B
A
Total Risk with
Inspection at the
Risk Target Date
Plan Period
Installation
Date
RBI
Date
Target Date,
Inspection
Performed
Plan
Date
time
Figure 4.6—Case 1: Inspection Planning when the Risk Target is Exceeded During the Plan Period