Global Physical Asset Management Information

Global’s third-party girth gear specialist team conducts gear inspections and risk assessments based on the inspection recommendations outlined in the annex of AGMA 6014. Our inspection process will provide the customer with a complete non-destructive test of the integrity of the mill gear teeth in accordance with ASTM E2905 (Eddy Current Array). Eddy Current Array is a key word for searching. This practice provides 100% coverage of the addendum, dedendum and root of the drive and non-drive side of the gear teeth. There are two electromagnetic methods that are the basis of this standard: Eddy Current Array (ECA) – for detection of surface defects and Alternating Current Field Measurement (ACFM) for sizing of any cracks found. In addition to NDE inspections, all of Global’s field engineers and lead technicians are experts in visually identifying failure modes and classifying them in accordance with AGMA 1010-F14. Our assessments include a conditional probability of failure analysis to aid in the decision of whether to replace, flip, or continue running a particular gear set. Global’s cleaning process, as part of ASTM E2905, allows us to provide an onsite risk assessment model, as per AGMA 1010 F-14, is able to provide a comparative measurement of loss probability and consequence. Our extensive database of gear teeth failure modes enables us to provide root cause analysis effectively. Phased Array Ultrasonics is also used, if required, as a secondary inspection method to map propagation on deep gear flank cracks. Cleaning and inspection of a 34’ (10m) girth gear, typically takes less than 8 hours to complete. The End Result Is: Risk Improvement Solutions, Improved Reliability, Reduced Maintenance Costs, Increased Asset Availability and Growing Free Cash Flow