Risk-based inspection (RBI)

ISQ uses a systematic and documented methodology allowing decision-making as regards maintenance inspection based on risk calculation.

We follow the API 581 methodology, using the API-RBI software, to implement a fully quantitative approach, combining the probability and the consequence of failure to manage risk, focusing our inspection resources on more critical equipment.

The ISQ RBI approach regarding integrity management lists all aspects of risk affecting the integrity of static equipment with the objectives:

• To reduce the risk by optimising the resources of inspection and maintenance (human and technical)
• To define inspection plans for shutdowns covering at least two production cycles
• To define operation windows that allow control and monitoring of degradation in real time  

ISQ RBI methodology focuses on:

• Knowledge of the process and their respective degradation mechanisms
• Identification of areas where damage is likely
• Deep analysis of risk results
• Establishing a model for the evolution of risk for the period under analysis
• Risk management to prevent failures and optimise inspection intervals 

With the ISQ RBI methodology we achieve:

• A fully auditable process Increase the overall efficiency of inspection
• Efficient optimisation of inspection resources
• Elimination of unnecessary inspection activities that do not bring any added value Increased control of corrosion/degradation
• Control of corrosion/degradation in real time – Windows of Operation
• Greater flexibility of inspection intervals without compromising the risk or integrity of equipment Increased availability and reliability (minimizes non-programmed shutdowns)
• Solid and fully traceable technique allowing justification of changes in inspection intervals for regulators/authorities
• Overall safety increase