Integrity is a critical element of an effective process safety management program that covers many important reliability and asset integrity concerns. While more visible aspects of a mechanical integrity program may be successfully managed, there are multiple other less visible or less understood issues that can fly “under the radar.” Effectively addressing these stealthy items within an inspection, testing, and preventative maintenance program, appropriately calibrated to the potential consequences of failure in a facility, can make a step-change impact on the overall risk profile of a site. This presentation reviews multiple overlooked components of an asset integrity program, along with a review of previous incidents and suggestions for better management of these sometimes hidden MI issues.