The primary outcome of an RBI assessment are inspection and Integrity Operating Windows (IOWs) to manage risks at the asset level. These strategies will categorize risks based on their health, safety, environmental, or business consequences.
Implementing a risk based inspection program provides the following:
- Overall reduction in risk for the assets assessed
- An understanding or acceptance of the current risk
- To maintain license to operate
In oil and gas, turnarounds (TARs) are a major source of maintenance costs and accidents. Revenue is greatly impacted during a turnaround as the facility is non-operational, causing losses in production. From an operational perspective, it is beneficial to reduce turnaround exposure while maintaining safety.
Using RBI, the number of inspections necessary is reduced and can be eliminated during the scope of a TAR. Considering the size and impact TARs have on maintenance costs, reducing TARs by even a few days has significant impact on revenue.
RBI also helps to extend inspection intervals and reduce scope. As part of the assessment, RBI identifies equipment that poses little to no risk. These low risk assets require low inspection coverage and minimal mitigation because of the acceptable level of risk they pose to safety or operations. Prioritizing resources towards higher risk equipment, while reducing inspections on non-critical assets, streamlines maintenance while reducing costs. Additionally, because the number of inspections is reduced, the volume of data is proportionally reduced as well, leading to a smaller data set and more accurate information.