PENGARUH DRYING ELEKTRODA LOW HYDROGEN PADA LONGITUDINAL WELD PENSTOCK MATERIAL BAJA SM 400 B TERHADAP CACAT LAS DENGAN INSPEKSI NON DESTRUCTIVE TEST METODE RADIOGRAFI

PT. Barata Indonesia (Persero) Tegal Water Resources Division is one of the hydromechanical workshops that focus on the construction of water buildings such as Penstock, valves, trashrack water gates on the dam and flood controlling pumps. Penstock is a channel that connects the water reservoir from the dam to the turbine in the power plant building. In the study entitled "The Effect of Low Hydrogen Electrode Drying on Longitudinal Weld Penstock Steel SM 400 B Material Against Welding Defects With Non-Destructive Inspection Test Radiographic Methods" was carried out to determine the comparison of the welding results of the penstock components using the condition of the electrodes being dried and without being drying and its effect on welding defects produced by inspection of the non-destructive test radiography. The first method of testing is to search for supporting literature, collect field data, carry out radiographic testing, film reading and interpretation of defects. The parent metal used is SM 400 B steel which has been Mill Test certified and has perfect weldability. The welding process is carried out using the SMAW method using the E7016 electrode. Based on research that has been done, the welding defect identified is the Wormhole Porosity cluster. As for the possibility of disability occurs because of the insecure storage and treatment of electrodes, and the weather intervention due to welding is carried out in the open.