Precise Inspection for Safety Diagnosis on 6 dams have been conducted by KISTEC. Spillway is the main structure of dam facilities especially in discharging water. Crack, leakage, and other defects have been inspected and analyzed depending on the purpose of spillway such as water gate or gate of intake.

Scanning technic is implemented with the underground structures: subway, tunnel, shaft, drainage path, spillway, and slurry wall. Both optical and laser scanning system have been conducted to the precise inspection of diagnosis and safety. Image and 3D coordinate from scanning can be utilized in monitoring scope and fundamental database of maintenance. There is a high possibility that the scanning will prevail on inspection and diagnosis.

In light of the maintenance of underground structures, the evaluation scope of precise inspection for safety and diagnosis have been revised. Crack, leakage, deterioration, and drainage system are evaluated with field inspection in maintenance manner. It also proposed that the additional revision of the precise inspection for safety and diagnosis.

런칭거더를 이용하여 상부구조를 가설하는 건설현장에서 런칭거더가 붕괴하여 인접하는 상부구조 및 하부구조에 일시적인 큰 충격하중을 가하므로 인하여 손상이 발생되었다. 따라서 손상이 발생된 상부구조와 하부구조의 건전성을 평가하여 장기적인 안전성 및 내구성을 확보할 수 있는가를 평가하기 위하여 정밀안전진단을 실시하였다.