This paper presents basic data to enhance the performance of safety check systems by analyzing the status of participants in the construction industry on the Periodical safety check system. The survey was conducted by the client, supervisor, and contractors. It is judged that it is possible to enhance the performance of the peer review system by expanding the participation of other highly recognized participants in the construction industry. It is deemed necessary to set up a monitoring system to monitor the check detai

By the revision of Special Act on the Safety Control of Public Structures('15 .1.6), coastal structures(breakwaters) was selected as management target. In this study, it is aim to introduce assessment methods for performing precision check-up and precision safety inspection of the coastal structures(breakwaters).

This study is to invest safety against the local corrosion of steel pylon in the Dolsan bridge(Cable-stayed type). For the investigation, visual inspection, non-destructive testing using the high resolution camera and ultrasonic thickness gauge with the structural analysis were completed. In the result of the safety check, no problem of steel pylon is detected. Cause of corrosion is damage on steel surface during early stage of the construction.