Risk-based inspection has been established to respond to the needs of the oil, gas and petrochemical industries to manage risk and prioritize equipment based on the amount of risk. Risk-based inspection is a new method in inspection management and uses risk assessment to plan, justify and interpret the results of inspection, testing and monitoring. In this method, unlike traditional inspection methods, a fixed time interval is not defined, but for each device, a specific time interval and inspection method is determined. By using risk-based inspection, while avoiding repeated inspections, inspection facilities and capabilities can be focused on devices with higher risk. . This method is consistent with the goals and rules defined by various authorities and is also a system for prioritizing and focusing inspections on equipment that has the greatest impact on the safety and reliability of an oil, gas and petrochemical complex. Risk-based inspection in the concept of integrated management is used as a key tool in improving industrial safety, efficiency and competitiveness.

The steps to implement RBI are as follows:

Preparations Companies RBI Policy
Creation of Asset Register
Corrosion Loop Design
Consequence of Failure Assessment
Probability of Failure Assessment
Risk assessment and determining the critical degree of devices
Technical inspection planning

After determining the risk level, each of the equipment of the inspection program, which includes inspection intervals, inspection range and inspection method, is determined. Generally, inspection intervals are determined based on the amount of risk, inspection range based on the outcome of the failure, and inspection method (NDT techniques used to identify defects) based on the probability of failure..

RBI Benefits:

One of the most important goals of risk assessment is to try to reduce mechanical damage, cost and material loss. In summary, the most important benefits of establishing a risk-based inspection are as follows: