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All Journal Jurnal Penelitian dan Pengkajian Ilmiah Spektrum Industri
Sukarsono, Bambang Purwanggono
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Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health

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Risk and Reliability Improvement Analysis of Boiler System Using the Failure Mode Effect Analysis & Critical Analysis (FMECA) Method Hatala, Muhammad Hudzaly; Sukarsono, Bambang Purwanggono; Nukertamanda, Denny
Spektrum Industri Vol. 21 No. 1 (2023): Spektrum Industri - April 2023
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v21i1.98

Abstract

Electrical energy is a vital source of energy for human life. Currently, various power plants can provide electrical energy, one of which is the Steam Power Plant (PLTU). A PLTU must carry out operational tasks repeatedly and continuously to meet electricity needs. Based on historical data for PT. PJB Service Kendari for the last three years, there has been an increasing trend of downtime and derating at PLTU Nii Tanasa Kendari in the 2019–2021 timeframe. The boiler system is one of the systems that often experiences disturbances. FMECA is required to carry out a risk analysis to find out in detail the causes, effects, impacts, and ways of mitigating risks, as well as sorting and labeling risks for critical components based on the RPN value. The boiler itself is the main component and is supported by other components in the steam-water process. The reliability value is determined after the critical component with a high level of risk is marked “Not Accepted”. The findings of the risk and reliability analysis will be used to mitigate risks and increase the value of the reliability of critical components. The results of reliability calculations based on MTTF found that 9 out of 13 critical components had a reliability value below 50%; increasing reliability values could be achieved using preventive maintenance (Rm(t)), and maintaining reliability values above 60% could be achieved using periodic component replacement (R(t-nT)) based on the MTTR data of each critical component.
Risk Mangement Study of Solid Waste Disposal Construction Project to Improve Project Performance(Case Study: 2 X 1000 Steam Power Plant Project) Munawar, Mufid; Sukarsono, Bambang Purwanggono; Saptadi, Singgih
CENDEKIA : Jurnal Penelitian dan Pengkajian Ilmiah Vol. 1 No. 1 (2024): CENDEKIA : Jurnal Penelitian Dan Pengkajian Ilmiah, Januari 2024
Publisher : Lembaga Pendidikan dan Penelitian Manggala Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62335/j8a2e777

Abstract

The construction project of a coal-fired steam power plant, of course, takes into account the problem of waste (coal ash), therefore it is necessary to plan for a place to store solid waste remaining from combustion (Solid Waste Disposal). Disposal of solid waste is a useful waste storage area to prevent pollution to the surrounding environment. The construction of solid waste disposal consists of embankments and ponds, in its construction it is necessary to consider the risks that will occur, so as to minimize the impact that will be caused, in terms of cost, time and quality. This study aims to determine the extent to which risk management is applied in the implementation of solid waste disposal development projects. The survey was conducted through interviews using a likert scale (1-5) questionnaire. The population and study sample taken are contractors and subcontractors who work on solid waste disposal projects, and already had long experience with soil works. The respondents consisted of project managers, construction managers, supervisors, surveyors, quality controls, engineers, and staff involved in them. A combination of proportional and purposive sampling method was used. SEM (Smart PLS) was used to test the validity and reability of the model as the data analysis technique. The research concludes that the performance projects of solid waste disposal were influenced by resources, which influenced by managerial aspect, that that the management of manpower and materials has a major role in improving performance is key mainly.
Co-Authors Hatala, Muhammad Hudzaly Munawar, Mufid Nukertamanda, Denny Singgih Saptadi