saujs Sakarya University Journal of Science 2147-835X Sakarya University 10.16984/saufenbilder.532674 Material Production Technologies Malzeme Üretim Teknolojileri Metallographic Aspects Investigation of Penstock Materials in Hydroelectric Power Plants and Penstock Maintenance Methods https://orcid.org/0000-0002-8365-2447 Kahraman Gökhan MUNZUR ÜNİVERSİTESİ https://orcid.org/0000-0002-0902-336X Taşgın Yahya MUNZUR ÜNİVERSİTESİ 10 01 2019 23 5 744 748 02 26 2019 03 09 2019 Copyright © 1997, Sakarya University Journal of Science 1997 Sakarya University Journal of Science

Hydroelectric powerplants are renewable energy sources and have little impact on the environment.Therefore, it is one of the most preferred energy sources in the world. Inparallel with this situation, it is very important that the hydroelectric powerplants are maintained, their failures are prevented or permanently removed. Oneof the most important parts of hydroelectric power plants is penstock pipes.Along with the snail part of the power plant, the penstock supplies thepressurized water to the turbine wheel for energy production. In the powerplants that have been producing energy for many years, the maintenance andmaterial properties of penstock are very important. In this study, one of themost important equipment of hydroelectric power plants, pressurized water pipes(penstock) and chemical components have been examined in macro and microstructure and their maintenance is investigated. In the metallographic study onthe samples taken from two different regions of the penstock pipe; the perliticstructure, which has a homogeneous distribution into the ferritic structureforming the matrix, is determined and supported by analyzes. This study willhelp to ensure that all hydroelectric power plants operate smoothly in terms ofpenstock.

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