Seite - 966 - in Book of Full Papers - Symposium Hydro Engineering

Visual inspection of large dams Ir. H. Djuanda is a routine activity undertaken in the context of monitoring activities on dam safety. Visual inspection is done periodically and continuously to get the latest visual data about the condition of Dam Ir. H. Djuanda. Visual inspection is important because not all changes in the condition and behavior of the dam can be described from the measurement or reading of the instrument. This visual inspection is done twice a year i.e May - June at high water level and November - December when the water level is low. Visual inspection activities consist of a series of inspection activities on dam bodies, complementary buildings, hilltop, rim (roving) reservoirs and the surrounding dam environment. Matters inspected during the visual inspection of the dam include leakage, basement, springs, evaporator, erosion eruption, surface erosion, scouring, abrasion, excessive plant growth, top straightness, protrusion or subsidence of slopes, animals, deterioration of rip-rap quality as well as other slope protective materials. As for the concrete buildings are examined for cracks, crushing, dissolving, leaking, indication of deterioration of quality or chemical reaction and or damage due to erosion and cavitation, the stability of construction joints. The method of inspection implementation is divided into 2 types: visual inspection and underwater inspection. Visual inspection is a visual inspection of the ground and water inspection objects, such as dam surfaces, auxiliary buildings, ridges and reservoir cliffs, hydro mechanical equipment and so on. Based on the results of visual inspection and observation of the dam body, main spillway towers, access galleries, saddle dam bodies, reservoir reefs and complementary buildings that are generally in relatively good condition and normal. REFERENCE [1] DIRECTORATE GENERAL OF WATER RESOURCES, Ministry of Public Works, Guidelines for Inspection and Evaluation of Dam Safety, March 2003. [2] JASA TIRTA II PUBLIC CORPORATION, Report Six Monthly Visual Inspection Dam Ir. H. Djuanda, 2017. [3] GOVERNMENT REGULATION No.37 Year 2010 on Dams. [4] JASA TIRTA II PUBLIC CORPORATION, Quality System Document No. 1 / DL / PT / 30.21 applied in Jasa Tirta II Public Corporation on Dam Monitoring and Reporting and Operational Guidance of dam monitoring unit 966