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All Journal Jurnal Teknik Sipil Rekayasa Sipil Jurnal Dampak Briliant: Jurnal Riset dan Konseptual Vitruvian : Jurnal Arsitektur, Bangunan, dan Lingkungan Civil Engineering Dimension BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Industri Inovatif : Jurnal Teknik Industri Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Jurnal Abdimas Berdaya : Jurnal Pembelajaran, Pemberdayaan dan Pengabdian Masyarakat
Apif Miptahul Hajji
Universitas Negeri Malang
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Risk Analysis of Substation Electrical Project Suwaibah Al Aslamiyah; Hajji, Apif Miptahul; Alfianto, Imam
Rekayasa Sipil Vol. 18 No. 3 (2024): Rekayasa Sipil Vol. 18 No. 3
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.03.12

Abstract

The electricity infrastructure project is a complex construction project with many types, activities, and synergies from internal and external stakeholders.  The Gas Insulated Switchgear (GIS) 150kV of Gunungsari is a substation electrical construction project with delays in its construction process. The emergency of delays due to project risks that are not handled properly during the completion process and potentially create new risks. This study aims to identify the risks of project delays and determine effective risk treatment. The risk management process carried out in this study refers to ISO 31000:2018, which starts by defining the scope, context, and risk criteria, then continues with risk assessment, including risk identification, risk analysis, and risk evaluation, and then continues by determining risk treatment. Risk identification was obtained through literature study and Focus Group Discussion (FGD) with expert judgment involved in the project. The risk analysis results using the risk matrix obtained the most dominant risks, such as delays in project handover and additional item construction. The major risks included are those that require risk treatment to reduce the level of risk.
PEMS-on board and E3 Modeling: A Comparison between Real-World Measurement and Emissions Estimates from Construction Equipment Apif M. Hajji M. Hajji; Aisyah Larasati; Michael P. Lewis; Huang Yue
Civil Engineering Dimension Vol. 21 No. 2 (2019): SEPTEMBER 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (352.17 KB) | DOI: 10.9744/ced.21.2.59-65

Abstract

Vehicles in construction industry are typically powered by diesel engines and are considered to be an off-road source of air pollution. Air pollutant emissions include nitrogen oxides (NOx), particulate matter (PM), hydrocarbons (HC), and carbon monoxide (CO). Any engine that combusts a nonrenewable carbonaceous fuel will have net emissions of carbon dioxide (CO2). Economic-Energy-Environmental (E3) model, a statistical-modeled tool, is developed by combining a multiple linear regression (MLR) approach for modeling equipment productivity with the emissions calculation algorithm from Environment Protection Agency (EPA)’s NONROAD model. This paper compares emissions data between the field data to E3 model outputs, and  determines the similarity of the two sources of fuel use data. It is expected the two data are not narrowly similar since the field data are for individual vehicles, while E3 results are based on NONROAD model, which was intended to estimate average fuel use for a fleet of Heavy-Duty Diesel (HDD) equipment.
Analisis Kelayakan Aspek Pasar dan Aspek Finansial Pada Proyek Optimalisasi Desa Wisata Watulimo, Kabupaten Trenggalek Prabawati, Lucky; Hajji, Apif Miptahul; Larasati, Aisyah
BRILIANT: Jurnal Riset dan Konseptual Vol 9 No 2 (2024): Volume 9 Nomor 2, Mei 2024
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v9i2.1696

Abstract

A feasibility study is a business project analysis of whether or not a project is feasible to carry out continuously profitably. The feasibility study has 7 aspects for investors to consider when investing in the project. The planning for the Watulimo tourist village has gone through master plan planning so it requires a feasibility study to attract investors to invest their funds. This research focuses on market aspects and quantitative financial aspects. In the market aspect, researchers use a questionnaire to determine the characteristics of tourists regarding their decision to visit. Respondents were 30 people with an age range of 13 - 18 years. Apart from that, they also predicted the number of visitors in the future. In the financial aspect, researchers use the NPV, PP and IRR methods as indicators of project feasibility. From the results of data processing, it was obtained that the market aspect of the decision to visit was influenced by psychological factors by 89.3% > other factors. The forecasting method uses the time series trend method with a double moving average model. From this model, the results show that the number of visitors will continue to increase every year. In the financial aspect, the NPV results in stages 1 and 2 were positive, the PP calculation in stage 1 was <the economic age of the building, but in stage 2 the PP was predicted to be > the economic age of the building. Meanwhile, the IRR calculation method for both stages 1 and 2 exceeds the specified interest rate (9%).
Co-Authors Aisyah Larasati Ananda Bella Dwi Kurnia Anie Yulistyorini Cynthia Permata Dewi Dian Ariestadi Diva Odilia Shafitri Feriyanto, Ardi Henri Siswanto Heru Setiyo Cahyono Huang Yue Imam Alfianto Michael P. Lewis Prabawati, Lucky Setiyono Setiyono Suwaibah Al Aslamiyah Wa Ode Dwi Muja Lestari Yohanes Wilasa Widodo Zsagheta Ihwal Rezky