Open AccessAnalysis of the Potential of Crust Formation and Corrosiveness in the Way Rilau PDAM Lampung Distribution Network Using the Langelier Saturation Index Method
Author(s) -
Muhammad Shahbaz Anwar,
Alexander Sembiring,
Agustinus Purna Irawan
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/852/1/012040
Subject(s) - piping , corrosion , leakage (economics) , petroleum engineering , saturation (graph theory) , water pipe , crust , volumetric flow rate , geotechnical engineering , materials science , metallurgy , environmental science , engineering , environmental engineering , geology , mechanical engineering , mechanics , mathematics , physics , combinatorics , geophysics , economics , inlet , macroeconomics
Crust formation is a complex problem and always occurs in piping systems, both in oil piping systems, industry, and water distribution. When the crust is formed on the pipe, it will cause the pipe diameter to shrink and inhibit the flow of fluid in the pipe system. If the pipe has a problem, its temperature and pressure will be higher, increasing the possibility of the pipe to break and get damaged. This study aims to determine the formation of PDAM water pipe scale in Bandar Lampung with the Langelier Saturation Index Method. Based on the LSI calculation results, a value of -0.9 is obtained. This indicates that the corrosion rate is high, but there is no visible potential for scale formation. Formation of corrosion in the pipe can cause the pipe wall to thin out thereby increasing the potential for pipe leakage. Due to this, the checking of the pipes is necessary. Potential leakage of pipes will disrupt the distribution system and reduce service levels of PDAM Bandar Lampung City. Increasing the value of LSI in water can increase the pH of each water source. Increasing the pH will cause an increase in the value of LSI so that it is in neutral conditions and the level of corrosivity decreases. In addition, the flow velocity of water needs to be maintained with a minimum speed of 0.3 m/s to prevent the formation of scale on the pipes.