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RISK ANALYSIS OF LANDING SHIP TANK WARSHIPS FOR DELIVERY OF LOGISTIC ASSISTANCE IN ISLANDED EARTHQUAKE LOCATION I Made Suwandiyana; Ahmadi Ahmadi; Priyadi Hartoko
JOURNAL ASRO Vol 12 No 4 (2021): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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The future threat to the world, including Indonesia, is natural disasters. The Navy as a means of state defense places natural disaster management as a form of military operation task other than war. Landing Ship Tank (LST) type warship is a defense system capable of delivering logistics on a large scale directly to disaster locations via beaching. The main problem is still finding delays and failures in logistics delivery caused by equipment damage with the biggest loss being the sinking of warships. The aim of the research is to minimize the occurrence of risk events by making a risk management design based on the ISO 31000 framework which focuses on warship operations. The method used by the House of Risk (HOR) is divided into two stages. HOR stage 1 focuses on ranking the Aggregate Risk Potential (ARP) value with the help of a Pareto diagram to determine the selected risk agent, which then requires treatment on a priority scale. The results of the HOR stage 1 are then entered into the HOR stage 2 to obtain the most effective preventive action. The results obtained, there are 8 risk agents that need to be handled. Furthermore, based on brainstorming with the Expert (the commander of the warship) obtained 12 mitigation actions that can be implemented immediately. Keywords: Risk Analysis, Landing Ship Tank, HOR

OFFENSIVE AND DEFENSIVE CAPABILITY COMPARISION BETWEEN IVER HUITFELDT CLASS AND PKR105 CLASS BASED ON SALVO MODEL Avando Bastari; Ekaris Kusuma; Okol Sri Suharyo; Priyadi Hartoko
JOURNAL ASRO Vol 11 No 04 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/asro.v11i04.369

Warship ability owned by Indonesian Navy is expected to have deterrence effect on other countries that want to disturb the sovereignty of Indonesia. Therefore, the right decision is needed to determine which warship should be chosen to carry out the task of guarding Indonesia's territorial waters. The newest warship that has a deterrence effect and is owned by the Indonesian Navy is the KRI PKR105 class. This ship has reliable capabilities both in terms of offensive and defensive because it is equipped with qualified equipment and weapons. Meanwhile, in future plans, the Indonesian Navy is interested in having a Danish-made Iver Huitfeldt class warship which also has a fairly reliable capability. In this paper, we will discuss the calculation of the capabilities of the PKR105 class and Iver Huitfeldt class which are planned to be purchased by the Indonesian Navy based on the Salvo Model. From the calculation, it can be seen that PKR105 class has the same offensive capability as Iver Huitfeldt class but Iver Huitfeldt class has higher defensive caspability than PKR105. This is because the tonnage of Iver Huitfeldt class is greater than PKR105 as one of the staying power parameters for calculating defensive ability. To overcome the shortage of PKR105 defensive capabilities, a $ 21 million CIWS can be added as one of the defensive power parameters in calculating defensive capability considering that there is still a difference in the PKR105 price of $ 285 million with the Iver Huitfeldt class price of $ 325. With this upgrade option then it can be used as one of the considerations in determining the type of ship that can be selected to increase the combat capability of the fleet. Keywords : Iver Huitfeldt Class , PKR105 class, reserve fuel, Salvo Model.

DESIGN OF ACADEMIC INFORMATION SYSTEM BASED ON BOT TELEGRAM IN SMART CAMPUS CONCEPT Ahmadi Ahmadi; Dedi Setiawan; Suprayitno Suprayitno; Priyadi Hartoko
JOURNAL ASRO Vol 11 No 03 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/asro.v11i03.310

The goal for many education institutions is the existence of the Smart Campus concept. Smart Campus is the concept of a smart campus to provide maximum service to the entire academic community by monitoring and managing existing resources effectively and efficiently. Smart Campus can also provide appropriate information to students or campus institutions in every activity, or even in unexpected events. In this research, it is proposed to maximize the academic information system which is integrated with the Telegram messenger application. This Telegram application can be obtained for free, lightweight and multiplatform by having a fairly complete and more developed Bot API. Students get real time notifications and can chat / communicate with the Telegram Bot which is designed to provide all the information on STTAL. The admin can upload lecture material into the Telegram Bot then students can download it from the Telegram Bot. There are 11 commands designed in this study as a prototype. This research was tested by trying all the commands provided. This Bot Telegram application is very helpful for study program staff and lecturers to convey information to students especially using this application is quite easy. Keywords: Smart Campus, Bot Telegram, and Information Media

PRIORITY DETERMINATION OF SUBMARINE TYPE AS DEFENSE OF ARCHIPELAGIC WAR WITH FUZZY AHP METHOD AND BCR ANALYSIS Dani Hutabarat; Udisubakti Cipto Mulyono; Ahmadi Ahmadi; Priyadi Hartoko
JOURNAL ASRO Vol 12 No 01 (2021): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/asro.v12i01.381

This thesis describes the application of the Fuzzy Analytical Hierarchy Process (Fuzzy AHP) approach and Benefit Cost Ratio (BCR) analysis in submarine selection. Submarines as Main Defenses System which are highly strategic in their procurement are directed at realizing a deterrence strategy and a strategy of balancing with state actors that have the potential to threaten the sovereignty of the Indonesian state. Apart from threats, the procurement of submarines also considers Indonesia's geographic constellation and the government's wishes, such as the interest of the minister of defense during working visits to countries that offer their submarines. The first step in procurement is to make an analysis in terms of selecting submarine alternatives, both analysis of information and identification of various important and interrelated requirements regarding data from submarine alternatives that will be selected later. Uncertainty from the government is a fuzzy'nes decision, so this condition can be resolved with the Fuzzy AHP approach and strengthened by BCR analysis, so that the results can provide a higher contribution. The results obtained from the Fuzzy AHP method are the priority order of selecting alternative submarines, namely Y-Class (0.398), W-Class (0.220), X-Class (0.191) and Z-Class (0.191). Where the results of the importance of the main criteria are sequential starting from the Strategic Requirement (Strareq) criteria of 0.409, Operation Requirement (Opsreq) of 0.318 and Technical Requirement (Techreq) of 0.273. Meanwhile, based on the BCR analysis, the Y-Class submarine was also selected with a BCR value of 1.512232936. Keywords: Fuzzy AHP method, BCR Analysis, Submarine Selection.

DETERMINATION TIME INTERVAL REPLACEMENT OF CRITICAL COMPONENTS IN SPERRY MARINE BRIDGEMASTER E RADAR SATUAN KAPAL CEPAT KOARMADA II Basuki Basuki; Avando Bastari; Priyadi Hartoko
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 5 No 1 (2021): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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One aspect of KRI operation readiness is navigation equipment where the navigation radar as a system for detection and location of objects has vital function so that high radar readiness is needed to support operations. To fix or prevent system damage, scheduled maintenance management is needed. The critical components of the Sperry Marine Bridgemaster E Radar were determined using the FMECA and reliability models in this analysis. The Risk Priority Number (RPN) was calculated using the FMECA model and was used as a reference value when evaluating critical components. The Risk Matrix is used to analyze the RPN value of each component. Of the 20 (twenty) components found, 7 (seven) are considered critical. It is a DC motor drive, Interface Unit, Magnetron, Modulator, Power Supply Scanner, Electronic Processor Belt and Drive Belt. With a value of 51840, the DC Motor Drive component has the highest RPN value, while the Dive Belt component has the lowest RPN value of 43776. Modulator has the shortest replacement period of 128 days, while the Processor Electronic Unit has the longest replacement time of 271 days. Keyword : FMECA, Time Interval of Replacement, Risk Priority Number (RPN), Reliability

ASSESSMENT OF OCCUPATIONAL SAFETY AND HEALTH RISKS BASED ON A RISK MANAGEMENT SYSTEM AND THE SELECTION OF ALTERNATIVE IMPROVEMENTS Dedy Aryanto; Sutrisno Sutrisno; Priyadi Hartoko
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 5 No 1 (2021): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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Work accidents, especially in the industrial world, must be an essential concern because they involve and individual health and safety in the surrounding environment. At Squadron 900 / Fasharkan Puspenerbal Juanda, there were quite a lot of work accidents. The causes of work accidents vary, from mechanical aspects (equipment and machines) to parts of hazardous materials. The use of Hazmat mainly causes work accidents in squadron 900/Fasharkan, primarily in department IV. Therefore in this study only discuss hazardous materials as a cause of work accidents. The research conducted is the identification of risks in department IV ( Department of Frame, AKP and Motor ) Squadron 900 / Fasharkan, especially the Division of Frame and Mechanical Division using the approach of Risk Management System. In this approach, a risk ranking is carried out using FMEA, and further efforts a made to make improvements to reduce the risk of hazards. The improvement efforts- selected from several alternative solutions that have made using the NPV approach. With the Net Present Value approach, it is possible to compare the existing alternative solutions financially. Keywords: Risk Management, Occupational Health and Safety (K3), Hazardous materials, Net Present Value (NPV)

FEASIBILITY STUDY OF OZONE GENERATOR BASED ON HIGH VOLTAGE ELECTRODE METHOD Saiful Hidayat Hizbullah; Eko Krisdiono; Priyadi Hartoko
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 5 No 1 (2021): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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Currently, various technologies are being developed which aim to improve the oxidation process so that its pollutant byproducts can be reduced. One of them is the development of the use of ozone as an alternative oxidizer which in the organic chemistry perspective has more free electrons so it is more reactive than oxygen. Ozone can be produced through several methods, such as the electrolysis method, the incandescent electrode method and the high voltage electrode method. This study aims to measure the feasibility of an ozone-producing reactor based on the high-voltage electrode method to produce photon strips initiating the formation of oxygen radicals. As the main indicators of the feasibility is the efficiency and level of performance of the reactor in producing ozone. As a comparison, the reactor is based on the previously made incandescent electrode method. Based on data from experimental results in the laboratory it can be shown that the high voltage method reactor is quite feasible. It can be proven in the discussion and analysis using linear regression and Minitab software that this method provides an increase in efficiency of 0.5% (0.714% to 1.214%) and an increase in performance of 1.8 ppm / min (2.57 ppm / min to 4, 37 ppm / minute ozone gas can be produced from 2.4 L / min of atmospheric air flowed into the reactor tube). Keywords: Laboratory Experiment, Application, ASTM D-2912, Linear Regression and Minitab Software, Product Feasibility.

ANALYSIS OF FACTORS INFLUENCING THE INCREASE CAPACITY FACILITIES SURABAYA MAINTENANCE AND REPAIR ON THE WARSHIPS REPUBLIC OF INDONESIA THE HEADQUARTERS COMMAND FLEET 2 Joko Setiaji; Priyadi Hartoko; Ayip Rivai Prabowo
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 5 No 1 (2021): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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The ability to carry out the maintenance and repair of Warships of the Republic of Indonesia / naval vessels is a concept used in assessing the achievement of work with time parameters and measures of success. Budget, infrastructure and human resources have an important role in the task of maintenance and repair facilities surabaya. Every maintenance and repair always expects the implementation of the work to be completed on time, and the maximum results, so that the ability to maintain and repair needs to be maintained and improved on the implementation of the work. There are several alternative factors that can lead to improved maintenance and repair capabilities of warships of the Republic of Indonesia / Naval vessels including budget allocation, supporting infrastructure directly or indirectly as well as the readiness of human resources that include willingness, experience and expertise. These factors have an interconnected pattern. This study aims to find out the main factors that affect the improvement of the ability to maintain and repair KRI / KAL in mako koarmada II. In this study used a measuring instrument called dynamic system method with stella software. Factors that affect the improvement of capabilities in the literature can be from the literature whereas, the determination of the main factors that affect is done by modeling dynamic systems. This dynamic system modeling is done by creating a dynamic relationship between the factors that affect productivity. The data collection in this study uses secondary data from the process of maintenance and repair of fasharkan in Surabaya. The scale of the data used to determine the factors that influence the improvement of the ability is modeled in qualitative form. The result of modeling dynamic system factors that affect the improvement of capability is budget, infrastructure facilities and human resources factors that dominate are human resource factors. Keywords: Proficiency, Dynamic System, Stella Software

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