Non Destructive Inspection CSI has a wide range of proven NDT techniques, and are award-winning specialists in the non-destructive testing and inspection industry. Non Destructive Testing involves the evaluation of existing structures without causing damage, with the intention of gaining a better understanding of key structural elements. A reliable structural condition assessment with CSI relies on rigorous observations and collecting accurate data so we can adequately describe the existing condition of the structure. Concrete Structure Investigations have award-winning expertise and the resources to provide you with accurate, independent and innovative non-destructive testing. Source Link: https://csiscan.nz/