RBI methodology

Risk-based inspection methodology includes steps such as:

  • Identify potential hazards associated with pressurized equipment

  • Determining the criticality of each hazard based on its potential impact (safety, environmental, production, etc.) and the probability of its occurrence.

  • Assign a risk score to each Hazard using an assessment matrix or other risk assessment tools

  • Determining the inspection frequency for each equipment or component based on the determined risk score

  • Preparation of an inspection plan considering the identified hazards and their criticality

  • Implemention the inspection plan and monitoring its effectiveness by reassessing the equipment


Information required for RBI

  • Pressure equipment data: This includes information about the design, construction, installation and maintenance history of the equipment, such as inspection reports, repair records and equipment specifications.

  • Operational data: includes data about How the equipment works , such as operating parameters, operating conditions, and process flows.

  • Equipment failure records: This type of data includes information and causes of equipment failure, such as failure reports, maintenance records, and incident reports.

  • Consequence data: This includes the potential consequences of equipment failure, environmental damage, safety hazards, production loss, and financial loss.

  • Risk assessment data: includes data about the risk assessment process, such as risk matrix, risk criteria and risk assessment methods.

  • Inspection and test data: includes data related to the results of inspections and tests, such as Non-Destructive Tests (NDT), visual inspection reports, and corrosion monitoring reports.

  • Expert knowledge: This includes data provided by subject matter experts who have experience working with the equipment or facility and can provide insight into potential risks and hazards.


Implementation of RBI With software

The RBI process started with data collection and then determination of damage mechanisms, PoF, CoF, risk and inspection planning. Each company may have its own criteria that should be added to the minimum requirements when implemention RBI.

The process of implementing RBI using software usually involves the following four main steps:

  • Preparation

  • Gap Analysis and Data Gathering

  • Risk Assessment & Inspection Planning

  • Workshops, Reports and Presentations


RBI Audit and Review Strategy

RBI Method Review: Before conducting a risk-based inspection, it is essential to review the RBI Method and ensure that it is up-to-date and relevant to the equipment and environment.

Audit the risk assessment plan: The risk assessment plan should be audited periodically to ensure that it is still relevant and effective.

Review the inspection plan: The inspection plan should be reviewed periodically to ensure that it is based on the latest risk assessment and aligns with equipment operating and maintenance technique

Inspection Plan Audit: The inspection plan should be periodically audited to ensure that it conforms to the risk assessment plan, covers all critical equipment, and is being implemented as planned.

Performance monitoring: Risk-based inspection performance should be monitored regularly to ensure that the desired results are being achieved.