TP20-11: A Structural Inspection and Condition Assessment Methodology for Concrete Cooling Towers

Concrete cooling towers experience various levels of concrete deterioration due to exposure to atmospheric conditions, cooling water chemistry, and various methods used to extend their service life. Despite being a critical asset, many cooling tower structures are inspected on an ad-hoc basis after problem conditions are discovered, often leading to more extensive repair conditions. This paper defines a standardized process and procedures for conducting inspections and condition assessments of concrete cooling towers. Inspection procedure recommendations are provided to aid a qualified team leader in carrying out the planning, observation, classification, and documentation of the physical condition of concrete cooling towers. Condition assessment procedures are then discussed to determine the need and priority of maintenance, repair, or rehabilitation actions based on information obtained from the structural inspection. The intent is to provide a systematic and proactive program for managing and maintaining cooling tower assets.