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Andalasian International Journal of Applied Science, Engineering, and Technology
Published by Universitas Andalas
ISSN : -     EISSN : 27970442     DOI : https://doi.org/10.25077/aijaset
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Mechanical Engineering
The Andalasian International Journal of Applied Science, Engineering, and Technology (AIJASET) is an international journal dedicated to the improvement and dissemination of knowledge on applied science, engineering and technologies including energy, environment, industrial, agriculture, civil, transportation, Information and communication and other related sciences and engineering. AIJASET follows new trends and advanced technology for practical applications of appropriate technology.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 209 Documents
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Stochastic Failure Mode Effect And Critical Analysis (SFMCEA) on Repair and Retrofitting Projects Albasyouni, Wahbi
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 2 (2022): July 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i2.40

Abstract

FMEA is a known method in risk management that de-fines the failure that might happen and identifies its hazards on the system; this procedure can be done using the risk priority number “RPN” analysis system. This method is applied on a real repair project “Sheraton Hotel” located in Cairo city near the Nile River where they had to make urgent repairs to avoid failure and collapse of the building. This study concentrated on developing the results and most common failures that might happen in any emergency project by determining the severity, occurrences, and detection to get the overall RPN of each failure. Two methods were used to rank the risks, the first one is the traditional approach which is based on getting one value for the severity, occurrence, and detection. On the other hand, the other method is getting a range of values (3 values) for the severity occurrence, and detection. The results showed that using the traditional form of RPN resulted in three major risks such as ineffective work penalties, complex contractor’s policies, and risks related to contract agreement. On the other hand, the use of a probabilistic analysis showed that the top risks are ineffective work penalties, problems with contract agreement, and unfavorable contract.
Anaerobic Ammonium Oxidation Performance in Shrimp Pond Wastewater Treatment Zulkarnaini, Zulkarnaini; Gumelar, Guno; Zainuddin, Elmi
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 2 (2022): July 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i1.41

Abstract

Intensive shrimp culture waste contains high nitrogen, reducing water quality and environmental carrying capacity. Anaerobic ammonium oxidation (anammox) is a potential technology for nitrogen removal. This research aimed to analyze nitrogen removal performance in a filter bioreactor (FtBR). Ammonium and nitrite concentrations of 70-100 mg-N/L were added to sterilized seawater as artificial wastewater and flowed to the reactor with HRT 24-hour. After 120 days of the experiment, the maximum nitrogen removal performance with parameters ACE, NRE, NRR were 82.48%, 72.58%, 0.12 kg-N/m3·d, respectively. The nitrogen stoichiometric ratio NH4+-N:NO2--N:NO3--N was 1:1,40:0,12, which was close to the stoichiometry of anammox process. The anammox process can be a new method for intensive shrimp culture wastewater treatment.
Reliability Distribution System on Load Break Switch Addition at PT. PLN (PERSERO) ULP Langsa City Using RIA-SECTION Technique Combined Method on ETAP 14.1.0 Hasibuan, Arnawan; Bintoro, Andik; Salahuddin, Salahuddin; Meutia, Rizka Dwi
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 2 (2022): July 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i2.42

Abstract

PT. PLN (Persero) ULP Langsa city is one part of UP 3 langsa, the LS-05 feeder in section two is the location for placing several office buildings. Continuity stable distribution of electrical energy is one of the most important aspects in the distribution system. Based on these problems, the writer was inspired to consuct research with the aim of testing the reliability of the feeders LS-05 and LL-4 which was installed with LBS manuver motorized at both ends of feeders. The LS-05 feeder with section method SAIFI value is 2.2739 times/ customers/ year and SAIDI Value is 8.41995 hours/ customers/ year. For LL-4 feeder witsh the same method SAIFI value is 2.28905 times/ customers/ year, then using RIA-Section technique combined method, LS-05 feeder have SAIFI value is 2,0219 times/ customers/ year, SAIDI value is 8,3082 hours/ customers/ year, LL-4 feeder have SAIFI value is 2.6574 times/ customers/ year and SAIDI 9.3008 hours/ customers/ year. This value indicates thet these two methods have succeeded in showing a reliability index is in accordance with SPLN due to the addition of LBS motorized.
Estimation of Carbon Dioxide Greenhouse Gas Emissions from Household Activities in Bojonegoro Regency Zumrotin, Amelia; Setyowati, Rr Diah Nugraheni; Nurmaningsih, Dyah Ratri
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 1 (2023): March 2023
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v3i01.46

Abstract

The energy sector from household activities is one of the contributors to carbon dioxide greenhouse gas emissions. The increase in population is a factor that can increase greenhouse gas emissions. This study aims to determine the value of greenhouse gas emissions and to map greenhouse gas emission zones. This research is a quantitative descriptive. The sampling method is simple random sampling and emission zone mapping using ArcMap 10.6. The data in this study were obtained by using questionnaires and direct interviews with respondents. The emission sources analyzed in this study come from the consumption and type of motor vehicle fuel, the consumption and type of cooking fuel, and the consumption of electrical energy. The highest value of greenhouse gas emissions resulting from household activities in Bojonegoro Regency is Balen District with an emission value of 139,048 tons/year. Meanwhile, the lowest greenhouse gas emission is Sekar District with an emission value of 22.725 tons/year. The total emission from household activities in Bojonegoro Regency is 2048,355 tons/year. Emission zone mapping is mapped into 10 zones. Balen sub-district is a sub-district that has the highest CO2 emission value with an emission value of 139,048 tons/year. Sekar, Kasiman, and Kedewan sub-districts are classified as sub-districts that have low CO2 emission values with emission values of 22,725 tons/year, 32,041 tons/year, and 28,498 tons/year.
Design of Household Electricity Protection and Monitoring Automation With IoT ESP32 Satria, Habib; Mual Gunawan Lubis, Mangara; Muthia Putri, Syarifah
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 3 (2022): November 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i03.53

Abstract

existence of a household electrical protection and monitoring system to minimize danger. Therefore, a prototype design tool for household electricity protection and monitoring automation with IoT ESP 32 is developed. With the aim of carrying out voltage protection and electricity monitoring with a normal voltage of 220 VAC. designed to increase the existing protection system in the household, not to replace the function of the MCB. With a success rate of 99.6% voltage measurement, 97.5% current and 97.8% power measurement. Testing the tool using an inductive load in the form of a 45 watt 35, watt, 26 watt LED lamp and a resistive load in the form of a 400 watt iron set at the maximum hot point. below 210 VAC.
A Study On Twenty First Century Cyclones and Their Lifetime Behavior in The Bay of Bengal Towhiduzzaman, Md.; Al Mohit, Md. Abdul; Rahman, Md. Atikur
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 3 (2022): November 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i03.54

Abstract

Bangladesh is a small disaster prone country in South Asia. The natural hazards of this country increased due to global warming. An informative investigation of cyclone lifetime activity within the Bay of Bengal has been in Analyzed. Cyclone characteristics, mainly lifetime, occurrence were investigated with 21st century cyclone data calibration. The changes of cyclone characteristics were investigated from the Bangladesh Meteorological Department data. The data are observed by their own technology. A statistical and mathematical estimation was performed to investigate the trend and make a best fit of the cyclone behavior line. Major fitted curves are spline, shape-preserve, cubic, quadratic and linear. A significant change of the characteristics has been found due to change of time, which plays a vital role in changing the surge behavior and associated environmental parameters within this area. An increasing trend of occurrence behavior has been found from this study. Significant information comes from this study and the information is about the lifetime of a cyclone. Although the lifetime of cyclones fluctuates due to changes in climate conditions, the lifetime of cyclones will increase in the future. This means that the future cyclone gathers more energy and power. So that, in near future Bangladesh will face more powerful cyclone hazards.
Integration of Function Analysis and Trimming Method: A Systematic Approach for Improving a Spinal Board Design Zadry, Hilma; Susanti, Lusi; Uswansyaf , Gamma
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 3 (2022): November 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i03.55

Abstract

Function analysis primarily distinguishes components in a system and explains the function interactions amongst the components' pairs. It assists designers in revealing the main problematic areas (components) and contradictions. The trimming method assists in generating a simple design; thus, it can reduce costs and the number of faults. This study integrated the function analysis and trimming method as a systematic approach to product concept design based on the problem-oriented concept. A spinal board is an evacuation device for patients with an injured spinal cord. A case study of improving a spinal board design is conducted to demonstrate the applicability of the proposed approach. The study resulted in an alternate design of spinal board with some inventions which deliver improved performance in decreasing injury, increasing comfort and safety, and satisfying the users' requirements.
Economic Calculations of Electricity Using AC System on Residential Load Daud, Muhammad; Hasibuan, Arnawan; Siregar, Widyana Verawaty; Setiawan, Adi
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 3 (2022): November 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i03.56

Abstract

The research in this final project discusses the economic calculation of electrical energy consumption in a 220 VAC system at a residential load on a type 54 house. The simulation of the AC system is carried out with ETAP 12.6 software. Simulation is done by making installations with residential loads with cables that have a length according to the distance to the loads. From the ETAP simulation, it can be seen the current and line resistance values on the report manager display so that the losses and efficiency of the two systems can also be known. Based on the results of simulations and calculations, the total value of the losses that occur in the 220 VAC system is so small that it looks like 0 watts, this happens because the simulation results are shown in kWatt in the ETAP.
Low Cost IoT Based Home Smart Locker to Receive Online Shopping Packages Prima Atmaja, Ardian; Dwi Setia, Luthfiyah; Fajar, Muhammad Syaeful; Ismar, MH. Ramdhani
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 2 No. 3 (2022): November 2022
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v2i03.57

Abstract

The easier it is to access the internet, almost all human activities are helped. One example is the sale and purchase of goods to the delivery of the ordered goods to the buyer's house. This is increasingly widespread after the emergence of several marketplaces that collaborate with shipping service providers to deliver ordered goods to buyers' homes. Problems occur when the shipping courier who comes to the buyer's house does not meet the buyer or the buyer's relatives to receive the ordered goods. So that there is a tendency for the courier to put the ordered goods in any place which can cause the goods to be lost. Based on this, a solution will be given in this research, by making a low-cost smart locker for home users to receive goods ordered from online shopping safely without having to meet face-to-face with conventional buyers. In addition to helping receive goods automatically and safely, the use of this smart locker will also minimize buyer contact with couriers directly, in order to break the chain of spread and transmission of several viruses, including Covid-19.
Power Plant Performance Analysis on Variations of Generator Loading at Ombilin Coal Fired Steam Power Plant Unit 1 (2x100 MW) Adytia Putra, Ryan; Nazir, Refdinal
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): July 2023
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v3i2.58

Abstract

Abstract— Steam Power Plants are classified as thermal plants that convert chemical energy in fuel into electrical energy. In an effort to increase the effectiveness of the work of the plant, there needs to be proper planning for its operations, this is important because it directly affects the operational costs incurred by the plant. This journal aims to determine the effect of changes in load or variations in generator loading on power plant performance, both efficiency, heat rate and production costs of electricity generation and to identify the magnitude of the decline in the thermal performance of the generator, as well as determine the causes and parts of the plant whose performance level decreases compared to optimal conditions. The method used to calculate the efficiency and heat rate is the “Direct Method”, namely by directly comparing the input energy with the electrical output produced. The data used in this study is the “Power Plant Performance Test” data. The results of this study get the most optimal conditions when loading 93.39 MW Net with efficiency 34.693%, heat rate 2475,445 kcal/kWh and electricity production costs 413,297 Rp/kWh. The conclusion of this study is that plant performance is getting better at high loads. Keywords: Thermal efficiency, Heat Rate, Electricity Production Cost, and Steam Power Plant

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