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All Journal Jurnal Syntax Transformation Edunity: Kajian Ilmu Sosial dan Pendidikan Journal of Social Science
Wang Zhiliang
PT Datang DSSP Power Indonesia
Humanities Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences

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Research on Structural Optimization and Vacuum Performance Improvement of Condenser Air Extraction System of Unit 2 PLTU IPP Sumsel Wang Zhiliang
Jurnal Syntax Transformation Vol 6 No 12 (2025): Jurnal Syntax Transformation
Publisher : CV. Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/jst.v6i12.1123

Abstract

Condenser vacuum level is a crucial parameter affecting the thermal economy of steam turbines and the overall efficiency of the unit. During operation, it was discovered that the condenser air extraction pipeline of Unit 2 at the PLTU IPP Sumsel5 was not installed strictly according to the design drawings, resulting in low extraction efficiency, severe local gas stagnation, and a persistently low vacuum below the design value. To address this, the power plant, taking advantage of the current annual overhaul, conducted a comprehensive study on the treatment and structural optimization of the low condenser vacuum. The air extraction system was redesigned and reinstalled, optimizing 2200 extraction pipelines to achieve efficient airflow distribution and uniform extraction. After the modification, the condenser vacuums stably reached the design value (-93kPa), the turbine back pressure decreased by approximately 3.5kPa, and the unit's thermal efficiency significantly improved, resulting in significant energy savings and operational economic benefits.
Research and Application of Corrosion Prevention Technology for Underground Water Intake Pipelines Based on ICCP (Impressed Current Cathodic Protection) Wang Zhiliang
Edunity Kajian Ilmu Sosial dan Pendidikan Vol. 4 No. 11 (2025): Edunity: Social and Educational Studies
Publisher : PT Publikasiku Academic Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57096/edunity.v4i11.457

Abstract

Underground water intake pipelines play a critical role in supporting the operational reliability of the IPP Sumsel-5 facility, including reuse water, service water, and fire protection systems. These pipelines supply essential resources such as boiler feedwater, steam support, and fire safety, making their integrity vital for continuous plant operations. However, prolonged underground service exposes them to severe corrosion risks that may lead to leaks, water loss, reduced system performance, and potential equipment damage. This study aims to analyze and implement an effective corrosion prevention strategy using Impressed Current Cathodic Protection (ICCP) technology to enhance pipeline lifespan and operational safety. A field-based engineering assessment was conducted involving soil resistivity measurement, pipeline potential testing, corrosion rate evaluation, and system modeling to identify the extent of corrosion threats. The ICCP design framework included anode bed configuration, current output determination, rectifier sizing, and protection potential optimization suited to site-specific soil characteristics. Data collection and analysis were performed through on-site inspection, electrochemical measurement, and simulation-based verification. The results show that the application of ICCP significantly improved the protection potential of the pipelines, maintaining the recommended - 850 mV (Cu/CuSO4) criterion and reducing corrosion progression to a negligible rate. The optimized ICCP system demonstrated stable current distribution, extended pipeline service life, and reduced maintenance risks. Overall, this study confirms that ICCP technology provides a reliable and effective solution for mitigating underground pipeline corrosion at IPP Sumsel-5 and can be adopted as a long-term corrosion management strategy.
Research and Application of Cathodic Protection Technology for Underground Pipelines: A Case Study of the IPP Sumsel-5 Water Intake Project Wang Zhiliang
Journal Of Social Science (JoSS) Vol 4 No 11 (2025): Journal of Social Science
Publisher : Al-Makki Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57185/c8jv2506

Abstract

Underground pipelines are exposed to continuous electrochemical corrosion during long-term service, which may result in reduced wall thickness, perforation, and leakage, posing serious risks to operational safety. This study examines the application of cathodic protection (CP) technology as an effective and economically viable corrosion prevention strategy, focusing on the underground water intake pipelines of the Sumsel-5 Independent Power Producer (IPP) project. The objective of this research is to evaluate the effectiveness of a constant-potential CP system in controlling corrosion and maintaining pipeline integrity under real operational conditions. The study employed a case study approach, beginning with on-site assessments of environmental characteristics, corrosion patterns, and baseline electrochemical potential. Subsequent stages included CP system design, installation, and monitoring, with technical parameters tailored to site-specific requirements. Field measurements were conducted to evaluate performance, and maintenance procedures were documented to ensure long-term system stability. The results reveal that the implementation of the constant-potential CP system successfully maintained pipeline surface potential below –0.85 V relative to a saturated calomel electrode, meeting international protection standards. The system demonstrated consistent performance with significant reduction in corrosion risk and enhanced operational reliability. This study provides an applicable technical reference for similar water intake and underground transmission pipeline projects, highlighting the importance of integrated system design, monitoring, and maintenance in achieving sustainable corrosion protection.
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