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All Journal ASRO JOURNAL - STTAL STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE
Eko Krisdiono
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Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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IMPLEMENTATION OF THE CPM METHOD IN THE CONSTRUCTION PROJECT OF THE SURABAYA “X” HOSPITAL HEALTH CHECKUP Hendry Apriyanto; I made Jiwa Astika; Eko Krisdiono
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 6 No 1 (2022): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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Abstract

The process of planning to project control during the execution of construction work is an important activity of aproject. A project can be said to be a success or a failure caused by ineffective planning and control, so projectactivities fail. so there will be a delays, decreased quality, and increased implementation costs. A project is limitedby a predetermined time and cost so management in the project must be able to anticipate changing conditionsthat occur. The Critical Path Method abbreviated CPM method can be applied to manage project completion timemore efficiently and effectively. To be able to reduce the impact of project delays and cost overruns through acrash calculation mechanism with three alternative controls; additional labor or overtime work. Durationacceleration is carried out on jobs that are on the critical path and with the cheapest costs. In this study, the totalproject age was 277 calendar days, while the project deadline was 284 calendar days, thus the project wasdelayed for 7 calendar days with a total fine of Rp 25.242.944.400 and penalty cost is 1/1.000 for sum of contract.In this study the CPM method is intended to shorten the life of the project so that it can be completed in accordancewith the predetermined time limit and determine the age of project in accordance with the existing contract, usingCPM the project life can be shortened to 257 working days with an budget efficiency Rp. 176,700,611Keywords: Scheduling, CPM, Critical Path, Crashing, Time Acceleration
OPTIMIZATION OF PREVENTIVE MAINTENANCE AND REPLACEMENT INTERVAL OF CRITICAL COMPONENTS IN THE CUMMINS KTA 38D DIESEL GENERATOR Wakijo Wakijo; Suparno Suparno; Eko Krisdiono; Anton Nugroho
JOURNAL ASRO Vol 13 No 4 (2022): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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The Cummins KTA 38D brand diesel generator is a ship's power generation equipment owned by a supplier to warship electrical needs both at base or in operation. Based on damage report data from 2016 - 2022, the percentage of diesel generator damage reached 38.5% of the total damage to all ship equipment. The results of the analysis using the FTA method cause the failure of the diesel generator to be caused by one of the failure factors in the supporting sub-systems,both from the electrical sub-system, fuel sub-system, air sub-system, fresh water sub-system, seawater sub-system, the lubricant sub-system and the control sub-system were damaged. Calculation using FMECA, there are five critical components based on the RPN value with a "high" risk rating, namely the Body Cover Pump component with the risk of corrosion (205), the Impeller component with the risk of corrosion/cracking (260.5), the Cooler tube component with the risk of leakage (264,7), Mechanical Seal component with risk of damage/leak (192.8), Rectanguler Seal component with risk of leak (196). With a reliability approach and analysis of total cost replacement age preventive maintenance with a minimum reliability limit of 55.84%. It can be proposed maintenance intervals for Body Cover Pump components at 980 running hours with an increase in reliability of 30.87% and maintenance cost savings reaching 14.57%, Impeller components at 1581 running hours with an increase in reliability of 35.79% and maintenance cost savings reaching 29.28%, Cooler tube components at 979 running hours with an increase in reliability of 26.06% and maintenance cost savings reaching 16.40%, mechanical seal components at 1290 running hours with an increase in reliability of 33,20% and savings in maintenance costs reaching 22,57%, the rechtangular seal component on 979 running hours with an increase in reliability of 31.67% and savings in maintenance costs reaching 38.88%. Keywords: FTA, FMECA, Reliability dan Total Cost Replacement Age
OPTIMIZING THE SCHEDULING OF THE SURABAYA HEALTH INSPECTION BUILDING CONSTRUCTION PROJECT Hendry Apriyanto; Suparno Suparno; Eko Krisdiono; Rakhmad Susilo
JOURNAL ASRO Vol 13 No 4 (2022): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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Abstract

Projects can be said to be a success or a failure caused by ineffective planning and control, so project activities fail. so there will be delays, decreased quality, and increased implementation costs. The Critical Path Method abbreviated CPM method and goal programming can be applied to manage project completion time more efficiently and effectively. To be able to reduce the impact of project delays and cost overruns through a crash calculation mechanism with three alternative controls; additional labor or overtime work. In this study, the total project age was 277 calendar days, while the project deadline was 284 calendar days, thus the project was delayed for 7 calendar days with a total fine of Rp 25.242.944.400 and a penalty cost is 1/1.000 for the sum of the contract. Based on the data analysis and discussion that has been carried out in this study, the conclusion that can be drawn from his study is the number of days that can be completed in this project using the CPM scheduling method is 257 days. However, without using this method, the project completion time would take 284 days. In addition, the company can save costs of Rp. 181,682,772 while avoiding penalty fees due to project delays. while using goal programming optimization, the optimal time duration is 250 days with a cost efficiency of Rp. 246.092.991. So that by applying the calculation to the CPM method, the company can perform project efficiency for 27 days while using goal programming optimization have project efficiency for 34 days simultaneously being able to streamline the budget by using network planning Keywords: Project Scheduling, CPM, Goal Programming, Critical Path, Time Acceleration
RISK ASSESSMENT OF SAFETY AND SECURITY OF BALI COASTAL AND ASSIGNMENT OF DENPASAR NAVAL BASE ELEMENTS Nyoman Astawa; Iwan Vanany; Eko Krisdiono; Mukhlis Mukhlis
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 7 No 01 (2023): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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Abstract

The management of Bali's coastal waters is one of the priorities of the Bali provincial government as one of the drivers of the community's economy. The aspect of marine security and safety is one of the important factors that must be maintained to support the effective management of a waters. Therefore, mitigation measures are needed in dealing with various types of threats with the level of risk posed in the management of the Bali Coastal Sea waters. Denpasar Naval Base as one of the institutions tasked with maintaining security and safety in the territorial waters of Bali. The title of marine security operations element of the Denpasar Lanal is one of the main forces in maintaining security and safety stability in Bali's waters. In this research, identification of the types of threats and measurement of the risks posed will be carried out, which are measured from the perspective of maritime security and safety. From the results of the risk analysis, optimization modeling for the assignment of Denpasar Naval Base elements was carried out as a mitigation measure for various types of threats to be assigned to several Naval Post located in the coastal area of Bali. Identification of the types of threats is carried out by involving several experts in the field of maritime security and safety, measuring the value of risk is carried out using the Relative Comparison method. The assignment of Denpasar Naval Base elements is carried out using the Hungarian assignment method with the risk cost as a minimized aspect. The results of the risk assessment measurement show that the biggest risk faced in the management of the Bali Coastal is on the safety aspect of 67% and the security aspect with a proportion of 33%. The Assignment Optimization Model succeeded in optimizing the assignment of 6 (six) elements of the Denpasar Naval Base to 6 (six) Naval Post in the Bali Coastal Area. Keywords: Maritime Security and Safety, Risk Assessment, Hungarian Methods Assignment Model
Co-Authors Anton Nugroho Hendry Apriyanto I made Jiwa Astika Iwan Vanany Mukhlis Mukhlis Nyoman Astawa Rakhmad Susilo Suparno Suparno Wakijo Wakijo