Featured Whitepapers

Contamination control is an essential part of an effective maintenance program. It provides what is perhaps the single greatest opportunity for gains in terms of reliability and life extension. Significant savings can also be achieved through longer oil and component lifetime. This white paper describes the benefits of improving oil cleanliness as well as the three steps to an effective contamination control program.
Gas Turbines are primarily used for compression, power generation and marine applications. Did you know that when repairing, these turbines undergo many sophisticated performance tests? This case study presents a simplified alignment-testing process using the ROTALIGN touch; here, we aligned aeroderivative gas turbines to a steady pedestal bearing in record time. Learn how industry-leading functions like displaying vertical and horizontal adjustments live and simultaneously made the job easier and faster than ever.
While predictive maintenance practitioners may tout continuous improvement within the plant, it's important to turn that philosophy back on the predictive process itself. One technology has the potential to change the way maintenance technicians go about their daily routine: remote monitoring.
Particle imaging, electromagnetic, ferrographic, and spectroscopic methods were used to evaluate hydraulic oil samples collected from machines known to be generating abnormal wear particles. Analytical ferrography confirmed the presence of large reworked ferrous particles and small rubbing wear particles in the oil samples. ICP emission spectroscopy was limited in its ability to detect large ferrous particles. An automated particle imaging system incorporating dual electromagnetic sensors counted the number of ferrous wear particles larger than 25μm in the oil and measured the total ferrous concentration in parts per million. The number of large ferrous wear particles (counts/ml) was found to be independent of the total concentration of ferrous particles (ppm). The ratio of large to small ferrous wear particles and their concentration revealed the severity of wear occurring in the machines. These results demonstrate the diagnostic advantage of combining magnetic and particle imaging sensors in an integrated system.

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