HANDLING OF COAL DUST AT COAL HANDLING FACILITY IN COAL POWER PLANT USING SOFT SYSTEM METHODOLOGY (SSM) APPROACH

Currently, many coal-fired powers plants are built to supply electrical energy needs in Indonesia due to relatively inexpensive raw materials and abundant in Indonesia. Handling of coal is mostly done at the power plant using coal handling facilities consisting of ship unloaders, conveyor belts, stock piles, silos or bunkers. The problem that arises in the coal handling facility is dust from coal that fells or hovers in the air so that it can interfere with the environment and health both for workers in the Coal Power and residents around the Coal Power. The purpose of writing this paper is to eliminate the spread of coal dust that arises due to coal handling equipment that is not precise and imperfect. The method used is the Soft System Methodology (SSM), which is a systematic approach used to analyze and solve problems in complex and messy situations. This paper examines the benefits of applying SSM to knowledge management issues in handling coal dust at a power plant. Improvement is done by upgrading coal handling equipment (ship unloader, conveyor belt, stock pile) with the addition of dust suppression, proper sealing system, dust bag, and training to operators on the impact and handling of coal dust and coal handling equipment maintenance, so resulting in a significant decrease in the spread of coal dust, creating a working environment and the environment becomes clean, healthy and safe

Perancangan Sistem untuk Minimasi Limbah B3 di PT. XYZ Menggunakan Pendekatan SSM (Soft System Methodology)

PT. XYZ is a company that produces pharmaceutical products for livestock. Most of the raw materials for veterinary drugs consist of B3 powder (toxic and hazardous materials). Waste from the production process is unavoidable, one of the types of waste produced by PT. XYZ is B3 powder wastes. According to the Environmental Service (DLH) B3 waste cannot be directly discharged into the environment, therefore PT. XYZ uses 3rd party services in processing B3 waste disposal. PT. XYZ produces powdered B3 waste at an average of 267.12 kg/month, the cost that must be incurred by the company to manage B3 waste and the value of loss of raw materials is Rp. 28,094,703.70/year. This study aims to design a system for the minimization of B3 waste by using a Soft System Methodology (SSM) approach. The proposed changes from this research use the 3R principle (reduce, reuse, recycle). The implementation of the proposed changes can result in cost efficiency incurred by the company for B3 waste management of Rp. 18,368,995.87/year

Usulan Peningkatan Efisiensi Keseimbangan Lini Dengan Value Stream Mapping Dan Yamazumi Chart Pada PT.PAI

PT. PAI is a footware company that produces sports shoes. The production process at PT. PAI, has a waste of 15.891%. To overcome the problems that occur, this study was conducted with the aim of identifying and proposing waste elimination. The method used is a lean manufacturing approach. One of the tools used is Value Stream Mapping (VSM) and Yamazumi Chart. The first stage to solve the problem is the identification of waste using the Waste Relationship Matrix (WRM), Waste Assessment Questionnaire (WAQ) and VALSAT. The second stage is carried out by designing the current Value Stream Mapping (VSM), designing the proposed improvements using the Yamazumi Chart to balance the production line and designing the Future VSM based on the results of the proposals that have been given. The result of identification using these tools is known that the biggest waste is waste in the process with a percentage of 15.891% followed by overproduction of 15.774%. Based on the calculation using VSM and Yamazumi Chart, elimination of waste can be done as much as 5.48%, reducing the number of workers by 32 people and reducing the number of work stations by 16 work station

Integrasi E-Servqual, Model Kano, dan HOQ dalam Meningkatkan Kepuasan Pelanggan Jasa Ojek Online

Online motorcycle taxi service providers become business opportunities that grow and develop. The development of digital business opportunities is also supported by the increasingly widespread service users. This research aims to determine the characteristics of online motorcycle taxi service users and the attributes that are priority for users. In this study, several methods are used and integrated include: e-ServQual, IPA (importance-performance analysis), Kano Model, and House of Quality. The measurement result of the consumer satisfaction index is 55.58%, meaning that the consumers are quite satisfied with the online service. Based on the findings of this study, the attributes prioritized by consumers are the punctuality of the driver's arrival as stated in the application (attribute 14), the driver confirms the customer's order quickly (attribute 15), and the driver is easy to obtain (attribute 17). Finally, this study also recommends corrective actions to these service providers, among others: maintaining server reliability with a relative importance of 21.4%, regularly conducting driver training with a relative importance of 15.2%, and increasing the number of drivers with a relative importance 4.3%

Penerapan Lean Tools Change Acceleration Process (CAP) Model dan Spaghetti Diagram Pada Proses Produksi Sofa di PT. XYZ

PT. XYZ is a company engaged in the furniture manufacturing, one of which is sofa. PT. XYZ as a large company has a vision towards waste elimination and the application of lean tools to improve effectiveness and efficiency in its supply chain.  This vision is difficult to realise due to the lack of socialization, inavailability of company skills/expertise, and the absence of guidance for employees in implementing the lean SCM concept. The purpose of this study is to identify the formulation of stages in change management using the Change Acceleration Process (CAP) model. The spaghetti diagram approach is carried out to measure the distance between materials/materials and workers and an analysis is carried out to improve the layout of the work station to reduce the movement distance. Improvements to the layout of the work station using the Activity Relationship Chart and continued with the Activity Relationship Diagram. From the results of the improvement in the layout of the work station, the initial displacement distance of 174m was shortened to be only 116.4m.Keywords - Lean SCM, Change Acceleration Process, Spaghetti Diagram, Activity Relationship Chart, Activity Relationship Diagra

Drug forecasting and supply model design using Artificial Neural Network (ANN) and Continuous Review (r, q) to minimize total supply cost

The Mentawai Islands Regency Regional General Hospital faces a significant challenge with an 83% overstock of Medical Consumables, leading to increased inventory costs and potential damage and expiration of items. This exceeds the 1% pharmaceutical drug storage standards the Ministry of Health set. This study aims to optimize demand forecasting and minimize total inventory costs through a two-stage process. Firstly, demand forecasting is conducted using Artificial Neural Network (ANN), predicting a future demand of 10,036 units of Medical Consumables. Subsequently, the optimal order quantity and reorder points are calculated using the continuous review (r, Q) approach. The results reveal the optimal order quantities and reorder points for four types of Medical Consumables. This research introduces a novel approach by employing ANN for demand forecasting, then calculating optimal order quantities and reorder points using continuous review (r, Q). The cost components considered in the inventory cost calculation include purchasing cost, holding cost, shortage cost, order cost, outdating cost, and inspection cost. The designed forecasting models aim to enhance inventory management efficiency, optimize cost control, and improve patient services. The limitation of this research is that it only used five types of consumable medical materials to carry out this research due to limited data access. It is hoped that future research can use other types of drugs as well as a periodic review and forecasting approach using GA

PERANCANGAN MODEL PERSEDIAAN BAHAN BAKU UBI UNGU PADA PRODUKSI KERIPIK UBI UNGU DENGAN METODE SIMULASI SISTEM DINAMIS

Purple Sweet Potato is one of agricultural product that has been cultivated in Indonesia with high productivity. One of the processed products from purple sweet potatoes is snacks. It is the part of Fast Moving Consumer Good (FMCG) sector. The intense competition between snack industry players involves in the fluctuating demand on purple sweet potatoes chips. The uncertain demand for purple sweet potatoes chips causes a mismatch between supply of purple sweet potatoes and the actual needs. Therefore, this study was conducted to handle fluctuating demands by using dynamic system simulations to get maximum profit. Problem solving was done through two stages, namely designing optimal forecasting models and designing inventory models using dynamic system simulations. The dynamic system model consisted of two sub-models, namely the inventory sub-model and inventory costs. Inventory sub-models were  analyzed based on the demand for the amount of production of purple sweet potato chips and purple sweet potato supply, using four scenarios, where scenario 1 was done without policy changes, scenario 2 used inventory control, scenario 3 used probabilistic model P and scenario 4 performed a combination of demand forecast adjustment and probabilistic model P. The simulation results in 28 periods produced different benefits from each scenario. The highest profit was obtained when planning production with scenario 4, which was a combination of forecasting method with P model with a service level of 90%, with a profit of Rp 195,288,659,301 ± 20,447,754,235. Scenario 4 can produced the highest profit because it could plan raw material  optimally so that there were no high savings costs. Keywords: dynamic systems, inventory system, purple sweet potato, forecasting, probabilisti

Supply Chain Risk Mitigation for Logistics Service Companies

The increasing use of expedition services due to the Covid-19 pandemic has also increased various types of risks in companies. This study discusses solutions to the complexity of supply chain management in the expedition services industry due to pandemic Covid-19. This study aims to analyze the risk of security management systems based on every activity in the supply chain of an expedition company. The method used in this study is the matrix risk assessment to determine the risk ranking by multiplying the possibilities and consequence values. Descriptive analysis approaches and in-depth interviews are needed to identify the types of risks in the supply chain of PT.X. The application of risk assessment consists of five stages: development mapping of supply chains, risk identification, risk assessment, risk response development, and risk response control. The results of this study indicate that three types of extreme risks need to be handled in priorities by providing proposed mitigation, namely bad weather, road accidents, and damaged items. Risk mitigation strategies are carried out to prevent the types of extreme risks in the company

ANALISIS NILAI TAMBAH UNTUK MENINGKATKAN KEBERLANJUTAN RANTAI PASOK AGROINDUSTRI KOPI MENGGUNAKAN HAYAMI

Index keberlanjutan rantai pasok agroidustry kopi di Indonesia mempunyai indikasi tidak memiliki nilai keberlanjutan  yang  tinggi. Hal ini diakibatkan karena terjadinya banyak persoalan, salah satu diantaranya adalah rendahnya pendapatan petani yang menunjukkan terjadinya ketidakseimbangan distribusi nilai tambah.   Tujuan penelitian yang dilakukan adalah untuk melakukan analisis besarnya nilai tambah yang diperoleh oleh para aktor dan merancang usulan strategi untuk meningkatkan index keberlanjutan pada rantai pasok agroindustry kopi. Analisis nilai tambah dilakukan dengan menggunakan Hayami. Tahapan yang dilakukan adalah analisis konversi, identifikasi aktor yang terlibat dalam rantai pasok dan melakukan perhitungan keuntungan setiap aktor. Besarnya nilai keuntungan yang diperoleh oleh para aktor pada rantai pasok yang ada, cukup beragam, dimana keuntungan terbesarnya diperoleh oleh pengumpul (81,04%), sedangkan keuntungan terkecilnya diperoleh oleh petani yaitu 57,77%.  Rendahnya keuntungan petani akan berdampak terhadap rendahnya kualitas biji kopi dan terhadap produktivitas, sehingga diusulkan untuk dirancang sebuah kelembagaan untuk menghapus sistem ijon dan mendorong petani untuk dapat berinteraksi dengan bank dan pasar, serta terbuka kesempatan petani untuk menentukan harga

Tourism Industry Supply Chain through Stakeholder Participants: Facing Environment Uncertainty of Post Pandemic Covid-19

The environmental uncertainty due to the COVID-19 pandemic poses severe challenges for all parts of the supply chain in the tourism industry. The focus of the Indonesian government is to improve the condition of the tourism industry, which has experienced a decline in the number of tourists due to the COVID-19 pandemic. A supply chain tourism industry framework was developed through the Support System Facilities (SSF) variable to map the actors in the tourism industry activities in an uncertain environment due to COVID-19. The method in this study uses a qualitative descriptive approach through in-depth interviews, direct observation, and literature study. The results of this study are the tourism industry supply chain conceptual framework which states that there are several stages in distributing services and support systems and facilities to tourists, namely through suppliers, tour operators, tour agencies, and tourists. This finding has practical implications for the government in making a policy strategy