PT. XYZ is a company engaged in construction and manufacturing. The company focuses on paving production. Where there is a problem with paving printing machines in carrying out production, there are many productions that do not reach the target or the production process does not run optimally. The purpose of this study is to find out the performance of paving molding machines, especially in the components that most often experience damage to paving molding machines. Based on historical data on machine damage, a paving molding machine is a machine that has had the highest frequency of damage for 5 years, because this machine operates continuously to meet production targets and paving demand from customers. Reliability and Risk Centered Maintenance (RRCM) methods to be used to analyze a historical engine malfunction. The results obtained in the form of 7 proposed maintenance tasks are 2 scheduled on-condition tasks, 3 scheduled restoration tasks, 2 scheduled waste tasks. In addition, the average maintenance time interval for pillow blocks is 7 months, iron molding is 11 months, and chain is 4 months. The total cost of proposed maintenance is lower than IDR 52,938,750 or 41.7% compared to the existing maintenance cost of PT. XYZ. The development of this research is to increase the application of RCM as a basis for maintaining the balance between preventive maintenance and corrective maintenance while optimizing maintenance costs to improve engine reliability by considering risk factors as an analysis.

Manager at PT. PLN Persero has an important role in balancing internal relations with employees and external parties such as stakeholders. PT. PLN (Persero) Distribution Central Java and Yogyakarta D.I consists of a Unit Pelaksana Pelayanan Pelanggan (UP3) and Unit Layanan Pelanggan (ULP), ULP is directly related to the community and stakeholders. ULP Managers consists of Millennial Generation is 87% and Generation X 13%. The generation gap between Generation X and Generation Y (millennials) caused by the 7 years vacuum of recruitment, it causes of communication problems and Generation Y rapid adaptation to become young managers. Indicators identification are needed related to Generation Y's leadership style so that young managers are better prepared. Identification of the relationship between indicators is carried out using the Interpretive Structural Modeling (ISM) method and then classifying indicators using the Multiplication Applied to a Classification (MICMAC) method. There are 7 indicators obtained from ISM: M1 (Communication Method), M2 (Media Communication), M3 (Managing Team Involvement), M4 (Resolving Internal Conflicts), M5 (Risk Management), M6 (Responding to Change), M7 (Managing Stakeholder). MICMAC analysis results are M7 in the Dependent Indicators Cluster, the other indicators from M1, M2, M3, M4, M5, M6 are in the Linkage Indicators Cluster.

The objective of this study is to make a need assessment in the form of identifying trends in the need for prostheses and mapping the priority types of prostheses developed at Dr. R. Soeharso Orthopedic Public Hospital, Surakarta as a reference for innovation in the development of prosthesis products at Dr. R. Soeharso Orthopedic Public Hospital, Surakarta. The method used was descriptive analysis and moving average forecasting of historical data on the use of prostheses. From the results of the descriptive analysis, it was found that the most common types of the prosthesis were under the knee prostheses and the types of prostheses that mostly used imported components were finger prostheses and prostheses that have been developed locally which were lower and upper knee prostheses and also Syme. The results of the prediction of the number of prostheses showed a stable trend and tended to increase slightly with the MAD error rate of 2.375 and MSE of 10.378 and MAPE of 36%. With this accuracy, the results of the forecasting can be used as a reference for the hospital to make supplies of prosthesis components in the next period so that the time for making prostheses can be shortened. Meanwhile, for the development of the direction of innovation, recommendations for the type of prosthesis that is a priority to be developed at Dr. R. Soeharso Orthopedic Public Hospital, Surakarta is an innovation of under-knee and finger prostheses by implementing low-cost product designs.

Batik is an original Indonesian heritage, that must be preserved and it is the mainstay for implementation of “Making Indonesia 4.0”. It was published many research about stamp batik manufacturing, but still have limitation of motive variation and slackly design process. This research aim to develop the way to making CNC program to be quickly, besides of high variation of batik motive. Source code in python programming language, was built for extension tool in inscape software. Extentension is used to create stamp point, depend on various motive size. Source code created in .py and .inx format will be save in “ekstensi” folder. Based on coordinate point of stamping in stamp batik, CNC program will be created, using “G-code tools” extension that was available in inscape software menubar. CNC programming used extension was built is measured about time of process and compared to manual CNC programming. CNC program that has been built then tested in CAMotics software. The results of this research show that CNC program could maked with this extension for various dimension od batik stamp and in 2, 4, 6, 8, 10, and 12 meters of cloth length. CNC programming with extension developed, can reduce time up to 96.05%.

Due to the importance of organizational management and human resources (HR) in the company, this study intends to analyze several aspects related to these two things, such as internal and external conditions of the company, existing business strategies, existing organizational structures, and job descriptions in a position. This research chooses one of the long-standing car alloy wheels industry. By conducting SWOT method, observations and interviews, there are some conclusions about the company's existing conditions and the formulation of new business strategies. The recommendations proposed in this study include to optimize opportunities and to strengthen the internal factors of the company (SO strategy), to design a new organizational structure with the addition of several specific positions, and to design HR strategies to be more competent.

Kalasan Fried Chicken Industry Center is one of the home industries producing fried chicken in Yogyakarta. Initial measurements obtained from the working environment conditions of occupational health and safety are still considered to be less than comfortable and in accordance with standards. As a result of lack of lighting and high room temperature, workers often experience eye fatigue, dizziness, frequent loss of focus and poor quality fried chicken production. Occupational health and safety according to the standard, it is necessary to improve the lighting aspect with the Lumen Method (Lumen Method or Zonal Cavacity Method, ZCM), the physical environment in terms of temperature is designed by increasing the fan capacity needed by the work environment so that the number and type of fans with quality can be determined the right air for the room. The lighting needs of the work environment are 9 24 watt lights and an exhaust fan and sufficient air volume. The results of the implementation were able to increase the level of lighting and temperature in accordance with work comfort.

CV Tunas Jaya Abadi adalah perusahaan yang memproduksi kotak makan (wooden lunch box) berbahan baku kayu sengon laut (albasia). Produk yang dihasilkan berukuran 165 x 118 x 1,7 mm dan 193 x 118 x 1,7 mm. Proses produksi yang dilakukan adalah make to order repetitif. CV Tunas Jaya Abadi memiliki permasalahan dengan kapasitas produksi yang menyebabkan pesanan tidak terpenuhi. Lantai produksi terdapat stasiun kerja bottleneck pada stasiun kerja sanding/penghalusan. Penumpukan tersebut terjadi karena perbedaan waktu standar dan kapasitas maksimum pada stasiun kerja sebelumnya. Penelitian ini digunakan metode Theory of Constraints (TOC) untuk mengatasi stasiun kerja yang mengalami bottleneck. Perhitungan kapasitas maksimum setiap stasiun kerja didapat hasil bahwa stasiun kerja 7 memiliki kapasitas lebih sedikit dibanding stasiun kerja sebelumnya. Pemecahan masalah bottleneck pada stasiun kerja 7 terdapat dua alternatif solusi, yaitu dengan overtime atau penambahan shift kerja. Setelah dianalisis dari permasalahan yang ada maka untuk mengatasi bottleneck pada stasiun kerja 7 dilakukan penambahan shift kerja dari 1 shift menjadi 3 shift kerja. Hasil dari penambahan shift kerja ini tidak terjadi bottleneck pada stasiun kerja 7.

Cover Jurnal OPSI Volume 12 Nomor 1 Juni 2019

PADA PT XYZ merupakan produsen makanan ringan terkemuka yang ada di Indonesia. Divisi snack Garing adalah salah satu divisi produksi yang ada di PADA PT XYZ memiliki masalah pada bagian Extrude , dimana operator mesin yang tidak bisa memasukan adoan secara teratur kedalam mesin yang membuat hasil pilus menjadi jelek, tidak bulat sempurna dan cenderung gampang menggumpal saat digoreng. Salah satu faktor yang menyebabkan hal tersebut adalah postur operator yang berpengaruh terhadap kenyamanan dan mudah lelahnya operatorMetode dalam analisis posteur kerja yang digunakan adalah Rapid Upper Limb Assessment (RULA) untuk mengetahui tingkat bahaya pada postur kerja operator serta membandingkan posisi operator saat mengambil dan memasukan adonan kedalam mesin Extruder baik itu dalam posisi duduk dan dalam posisi berdiri. Metode RULA menganalisis postur, gaya, dan gerakan suatu aktifitas yang dapat menyelidiki tingkat resiko yang dihasilkan oleh aktifitas tersebut.Hasil dari analisis posturkerja menggunakan metode Rapid Upper Limb Assessment (RULA) diketahui bahwa posisi duduk operator yaitu posisi 1A, dan 1B serta posisi berdiri operator yaitu posisi 2A dab 2B pada saat mengambil dan memasukan adonan kedalam mesin Extruder, semuanya memiliki nilai final 7 dan action level 4 yang menunjukan menunjukkan bahwa penyelidikan dan perubahan dibutuhkan sesegera mungkin. Berdasarkan analisis metode RULA dapat disimpulkan bahwa penyebab mudah pegal dan lelahnya operator yang mengoprasikan mesin Extruder adalah karena postur kerja yang kurang ergonomis sehingga menurunkan tingkat keteraturan operator dalam memasukan adonan kemesin yang dapat menurunkan kualitas produksi.

PT SP Aluminium merupakan perusahaan manufaktur yang khusus memproduksi perlengkapan dapur, seperti wajan, panci, dan sebagainya. Strategi pemenuhan permintaan dilakukan dengan strategi produksi make to stock. Bahan baku utama yang digunakan untuk memproduksi produk-produk tersebut adalah aluminium. Pemasaran produk SP aluminum dilakukan melalui berbagai distributor di berbagai daerah dengan menyuplai wajan yang dipesan oleh para distributor sesuai dengan estimasi distributor terhadap permintaan wajan pada daerah masing-masing. Tujuan penelitian agar perusahaan dapat melakukan perencanaan kebutuhan kapasitas produksi sesuai dengan kapasitas produksi yang tersedia pada lantai produksi sehingga mampu mendistribusikan wajan kepada distributor dalam jumlah yang tepat. Kekurangan kapasitas produksi yang terjadi dapat diambil kebijakan terbaik untuk mengatasi kekurangan kapasitas. Hasil penelitian terjadi kekurangan kapasitas pada stasiun kerja Pencetakan Wajan Super ukuran 15 dan 16, Gerinda, Bubut, dan Polish. Kekurangan kapasitas yang terjadi diselesaikan terlebih dahulu dengan melakukan overtime selama tiga jam. Kemudian, kekurangan kapasitas yang masih terjadi pada stasiun kerja Bubut di periode delapan dan tiga puluh satu sebesar 68,43 menit dan 943,44 menit diselesaikan dengan cara mengsubkontrakkannya ke mitra perusahaan.