Osmose corrosion investigation programs locate and assess deterioration on steel transmission structures and identify those in need of repair, helping utilities avoid costly replacements.
During a comprehensive inspection, each leg of the
structure is excavated to a depth of 18 to 24 inches. This is the ideal
inspection method for obtaining structural condition information in the
critical transitional zone of the steel structure, and it allows for protective
coatings to be applied. Predictive inspections provide an effective,
less costly approach that targets "the worst of the worst" conditions on a
structure. During a predictive inspection, one leg or section of the structure
may be excavated. Based on the findings in that area (including structural
condition and the presence of corrosion or the presence of corrosive factors),
a prediction is made as to the condition of the tower or structure.
The assessment process involves
both a structural assessment and a corrosion potential assessment.
During the structural assessment, each member of each tower is assessed and
assigned a structural rating based on the extent of existing corrosion and its
ability to support loads. During the corrosion potential assessment, each
structure is evaluated and given a rating based on the likelihood of future
corrosion. This comprehensive rating is indicative of its current corrosive
condition and its potential for future deterioration based on environmental
When non-destructive evaluation of
an asset is necessary, skilled and experienced Osmose technicians utilize
electromagnetic acoustic transducer (EMAT) technologies such as Intelli-PoleTM and Anchor-InspectorTM to help
identify below-grade structural defects. These technologies are types of NDE
designed to estimate the extent of defects in conductors, steel poles, stub
angles and guy anchors. EMAT technologies are particularly useful for inspecting
structures that cannot be excavated, or for structures that have been
classified as having severe corrosion potential and require further evaluation
without the risk of excavation.
All relevant data - both structural and environmental - collected during the
assessment process is recorded and delivered to the utility. Customers receive
raw data as well as project summary reports which summarize the findings and
provide recommendations for logical and cost-effective next steps.
For more information on corrosion assessment, please contact Kevin Niles at 716-523-3354 or [email protected].