Plants undergo equipment upgrades to increase life and add efficiency, and from industry experience we know that upgrades to meet performance objectives can produce unintended consequence, specifically in small-bore piping (<2” OD). When major rotating or piping components are repaired, modified, or replaced, the forcing function and/or system response is likely to change. Although there had been no history of vibration failures prior to modification, the potential for resonance-induced failures increases significantly post-modification. Proper vibration monitoring verified through an expert vibration assessment can expose conditions leading to failure and avoid losses. From small bore piping to large equipment, SI delivers effective vibration monitoring solutions to maintain reliability and performance.