Steel & Concrete Assessment

Osmose corrosion investigation programs locate and assess deterioration on steel structures and identify those in need of corrosion mitigation and repair, helping utilities avoid costly replacements.

Comprehensive Inspections vs. Predictive Assessments

During a comprehensive inspection, each leg of the structure is typically excavated to an approximate 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.

During a predictive assessment, environmental corrosion indicators are collected.  Based on those findings, a forecast is made as to the condition of the structure.  Predictive assessments provide an effective, less costly approach that targets “the worst of the worst” conditions on a structure.

Technology used to collect data on environmental corrosion indicators.

Structural Ratings & Corrosion Potential Assessment

The assessment process involves both a structural and a corrosion potential evaluation.  During the structural assessment, each foundation member of each tower is assessed and assigned a structural rating based on the extent of existing corrosion.

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 factors.

Data Deliverables

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.

Accurate, comprehensive data removes the guess work, allowing customers to address priority concerns immediately and design a condition-based assessment and mitigation program for the second cycle.  Most customers find that lifecycle costs diminish substantially in the second assessment cycle, while service life and reliability are enhanced.

Non-Destructive Evaluation (NDE) Options

When non-destructive evaluation of an asset is necessary, Osmose technicians utilize electromagnetic acoustic transducer (EMAT) technologies such as Intelli-Pole and Anchor-Inspector to help identify below-grade structural defects.  These proprietary technologies are specialized NDE methods designed to estimate the extent of the defects.  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.  Data compiled from the NDE field inspections is validated by means of a separate engineering analysis and delivered via written report to the customer as their final deliverable.

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