Risk Based Inspection has been developed to meet the needs of oil, gas and petrochemical industries to manage risk and prioritize equipment based on risk. Risk-based Inspection is a new approach to inspection management and uses risk assessment to plan, justify, and interpret the results of inspection, testing and monitoring. In this method, unlike the traditional methods of inspection, the time interval is not fixed, but for each device, the time interval and specific inspection method are determined. By using risk-based inspections, while avoiding frequent inspections, insight capabilities and capabilities can be focused on higher-risk devices. . This method is consistent with the objectives and rules defined by various agencies and also a system for prioritizing and controlling the equipment that has the greatest impact on the safety and security of an oil, gas and petrochemical complex. Risk-based risk management is integrated in the concept of integrated management as a key tool in improving industrial safety, efficiency, and competitiveness.
The RBI implementation process is as follows:

Preparing RBI Policies for the Correspondent Companies (Preparations Companies RBI Policy)
Preparation, Collection and Registration of Equipment Information (Creation of Asset Register)
Design of 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 level of risk of each of the equipment of the inspection program, which includes inspection intervals, inspection scope and inspection method, is determined. Generally, the inspection intervals based on the amount of risk, the scope of the inspection based on the outcome of the failure and the inspection method (NDT techniques used to identify the defects) are generally determined based on the probability of failure.
Risk Benefit Advantages (RBI Benefits):

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

Increased safety and equipment reliability
Prioritization of technical inspections of equipment (Prioritization of Inspection)
Reduced Unplanned and Planned Shutdown
Assessment of Inspection Effectiveness
Increased inspection intervals (Longer Inspection Interval)
Increased consistency in inspection planning
Identification of potential damage mechanism.
Identification of Process Process Parameters Affecting Corrosion (Identification of key process parameters affecting degradation rates)
Reduce the cost of inspection, maintenance and maintenance (Potential Inspection and Maintenance cost)