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Herri Christian Palit
Industrial Engineering Department, Petra Christian University
Industrial & Manufacturing Engineering

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Dampak Pembelajaran Online secara Psikologis pada Siswa SMA Harits Krishna Rifandi; Herri Christian Palit; Debora Anne Yang Aysia
Jurnal Titra Vol 9, No 1 (2021): Jurnal Titra 9(1) Januari 2021
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This research was conducted to determine the psychological impact of online learning of high school students. Online learning is being carried out by the government to minimize the spread out of COVID-19 virus. This research uses questionnaires about academic burnout which are distributed by using google form media. Statistic descriptive and crosstabulation are used to analyze and to determine the relationship between respondent profile and academic burnout statement that may affect the psychological burden of high school students. The result showed that all of the high school students experienced moderate level of academic burnout, high school students who experienced disruption during online learning had higher academic burnout, high school student who were more interested in offline learning had higher academic burnout, the higher grade level and the higher usage of video conferencing, then the greater academic burnout experienced by high school students.
Evaluasi Supplier Ban Trailer di PT. X menggunakan Metode Analytic Hierarchy Process (AHP) Cherry Chandra; Herri Christian Palit
Jurnal Titra Vol 10, No 2 (2022): Jurnal Titra 10(2) Juli 2022
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Supplier evaluation is a method that is used by companies, including PT. X to ensure that the supplier had been used in accordance with the desired standard. PT. X is a shipping company that serves shipping containers throughout Indonesia, especially in eastern Indonesia. In its operations, PT. X needs trailer tires as truck tires used to transport containers from and to the port where the ship rests. The evaluation of supplier assessment conducted by the previous purchasing department still tends to be subjective and there is no definite method. So that in this study an evaluation of supplier assessment was carried out using the analytic hierarchy process method. The AHP method helps companies make decisions by comparing the level of importance of each assessment criteria and sub-criteria. The value of the level of importance will then be processed using Microsoft Excel to get the weight of the assessment used in the supplier assessment form. In research that uses the AHP method, the final result is the best supplier, the supplier with the highest final value, namely supplier 1.
Upaya Peningkatan Efisiensi Proses Packing pada Departemen Sigaret Kretek Mesin (SKM) di PT. X Tiffany Victoria Hendra Budiono; Herri Christian Palit
Jurnal Titra Vol 10, No 2 (2022): Jurnal Titra 10(2) Juli 2022
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Efficiency is a key component of the organization, and one of the most significant areas is the production process. To support the growth of the business, PT. X has adopted the principle of continuous improvement. However, the continuous improvement projects in the production process, especially in the packing area, have not been implemented in a planned manner and have not been clearly measured. Before designing suitable improvements, the wastes that occur in the packing area must be identified. The method used in this study is Value Stream Mapping (VSM), which is a Lean Manufacturing tool for mapping the whole manufacturing process and identifying waste-producing activities. According to the findings of the analysis, the main waste that dominates the packing area is motion (95,76%), which is caused by excessive and non-ergonomic movement done by the workers in carrying out the process of moving goods. The improvement effort made is reorganizing the layout of the packing area in order to reduce existing waste. The changes made are then mapped in the future VSM. The implementation of the improvements made can reduce motion waste by 20%, production lead time by 1,27%, and worker movement distance by 12,51%.
Upaya Peningkatan Skill dan Knowledge Operator untuk Handling Defects pada PT. X Nia Adela Saputra; Herri Christian Palit
Jurnal Titra Vol 9, No 2 (2021): Jurnal Titra
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PT. X is a company that produces cigarette filter products in Indonesia. PT. X always makes continuous improvement so that the products produced are of the best quality to maintain the trust of customers. One of the improvements that will be made by PT. X is to improve operator skills and knowledge, so as to increase operator productivity. A production line is said to be productive if the production target on the machine has been met. If the production target is met, the machine downtime will also be lower. One of the factors that cause downtime is the occurrence of defects. Based on the AR (availability rate) report data that has been collected by PT. Previously, the average time for handling defects on 10 machines for 10 weeks was 123.47 minutes per shift or 41.15% of the average production up-time for each shift. This makes the machine's AR value only at 60-70%. If you look at the KPIs that have been determined by the company, the company's target for the AR value is > 85%. The high average downtime causes production results to often do not reach the target and make the machine AR percentage decrease. The higher the downtime percentage, the less finish good will be generated.
Penghematan Inventory Jenis Consignment-Kanban dengan Meminimumkan K-Max di Plant Y PT X Jason Averell Lumanto; Herri Christian Palit
Jurnal Titra Vol 8, No 2 (2020): Jurnal Titra 8(2) Juli 2020
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PT X is a company that works in manufacturing electrical components. One of their plants called Y plant has a mini warehouse that functions as a buffer for inventory between the main warehouse (A plant) and the production line on Y plant. One of the challenges currently present at Y plant’s mini warehouse is the high value of  consignment-Kanban inventory maximum Kanban capacity (K-max), reaching up to $200,073 for 445 part numbers. This problem is caused by the imbalances between certain part numbers’ K-max quantity and their actual average daily usage in real life. The proposed solution for this problem is to recalculate their K-min and K-max quantities by using the latest data that represent their real life conditions. The proposed solution is then implemented to 339 out of 445 consignment-Kanban type part numbers. This implementation brings reduction to the total K-max quantity by 43.96% reduction, and reduction to the total K-max value by 43.98%.
Upaya Mengatasi Permasalahan Lead Time Pembelian di PT. X Monica Iko Marita; Herri Christian Palit
Jurnal Titra Vol 9, No 2 (2021): Jurnal Titra
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PT. X is a manufacturing company engaged in the production of cosmetic packaging. This study focuses on the purchasing process in the Purchasing Department. The problem faced by the Purchasing Department is the lead time for submitting a purchase requisition (PR) to making a purchase order (PO). The standard set by the company is four days. From 2018 to January 2021, 28.45% of purchases did not meet lead time standards. Improvement efforts made were Data Cleaning, naming standardization, making part numbers, submitting PR using email, updating PR forms, and inventory management. After making efforts to improve the percentage of purchase lead times that exceed the four-day span in the PR to PO process, it is 10.89% in February to May 2021. The decrease obtained from the improvements made is 17.55%.
Pemetaan Kompetensi Teknis pada Beberapa Jabatan Berdasarkan Job Description di PT. X Louis Kidhanny; Herri Christian Palit
Jurnal Titra Vol 10, No 2 (2022): Jurnal Titra 10(2) Juli 2022
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PT. X is a company that produces cigarette filters and is under a holding company. As the company grows, more company management is needed for the continuity of the company. PT. X does not yet have a technical competency mapping on each task based on the job description of several positions held. Mapping is done to determine the technical competence of each position studied. The mapping of technical competence also determines the measurement method and target competency level. The positions to be studied are production supervisor, production assistant supervisor, logistic supervisor, logistic assistant supervisor, and logistic forklift driver. the method used in mapping is interview. The method used in the knowledge competency measurement method is a written test and oral test, the skill competency measurement method uses on the job training (OJT) and simulation and role play, the awareness competency measurement method uses a written test. The results of the research are in the form of technician competency mapping along with measurement methods and target levels for each task.
Perancangan Health Risk Assessment untuk Meminimalkan Penyakit Akibat Kerja pada Departemen Boiler Perusahaan Makanan di Surabaya Elizabeth Paula; Herri Christian Palit
Jurnal Titra Vol 8, No 2 (2020): Jurnal Titra 8(2) Juli 2020
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Occupational health is an important aspect to be considered by company. Workers, while producing food, cannot be separated from risk of getting occupational diseases. This company wants to implement ‘Zero Diseases’ program and requires documented monitoring and relevant control methods for occupational diseases arising from work activities. Assessing a Health Risk Assessment might be considered the most appropriate way to answer the company’s need related to documenting types, risks categories, and appropriate control methods of related occupational diseases. The method used in data collection is direct interviews, questionnaires, and annual employee’s health monitoring data from the company. The data is processed according to the needs of each type of occupational diseases. The risk categories are grouped based on a risk matrix. Sums up low risk occupational diseases as much as 59%, medium risk as much as 37%, and high risk as much as 4%. Control methods are included and adjusted to the types of occupational diseases and based on the principal of hierarchy of controls. All types of occupational diseases have administrative controls, eight of them have Personal Protective Equipmemt (PPE), and one of them has engineering controls. 
Upaya Peningkatan Produktivitas melalui Proyek Continuous Improvement pada Line Y di PT. Z Isaiah Thomas Joyodiono; Herri Christian Palit
Jurnal Titra Vol 10, No 2 (2022): Jurnal Titra 10(2) Juli 2022
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PT. Z is one of the largest tobacco producing companies in Indonesia, as a company that has the spirit of continuous improvement, the company wants to continue to increase their productivity, which is measured by yield and labor productivity. This research was conducted to provide suggestions as an effort to increase yield and labor productivity. In the project of eliminating idle time for the rotary dryer, it was carried out by rotating workers and adding workers from other lines, the result shows there was a significant increase in labor productivity. In the cleaning process, a suggestion was given in the form of the method used, which initially used the blow method to the suction method. In the metal detecting process, it is proposed to place a magnet before the raw material passes through the metal detector machine, this is expected to reduce overprocessing waste by 25 to 37.5 minutes or 625 to 937.5 kilograms. To determine machine parameters that affect yield, multiple linear regression analysis was performed. Based on these results, it was found that there were 4 variables. which significantly affects the yield for product 1. Meanwhile for product 2, there were 5 variables that significantly affect yields.
Penjadwalan Flow Shop Plant P dengan Modified Hodgson Algorithm di PT. X Adelia Leony Tanuwijaya; Herri Christian Palit
Jurnal Titra Vol 9, No 2 (2021): Jurnal Titra
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PT. X is a glass processing company located in Surabaya. Production system based on a customer order. Production could not work based on the schedule because the software cannot match the knowledge on the production floor. It will cause production cannot follow the schedule and inaccurate estimate completion time. This problem affected the percentage of lateness orders reached 33.07%. This project aims to make a proposed schedule that can minimize tardy jobs. The algorithm used in scheduling is Modified Hodgson Algorithm. This algorithm uses the remaining time of the process to decide the order of the jobs. The results showed that there was no difference between initial and proposed algorithm in almost each case, because the input of the cutting process between the present and proposed algorithm are quit the same. The implementation of proposed scheduling has been done in cutting, edge, drill, and notch process. Problems that often occurred are that the product is still in the previous process. It happened because the scheduling does not consider the transport time. The percentage of conformity between the proposed scheduling with realization for cutting, re-cut, edge square, edge irregular, and drill & notch processes is 100%, 33%, 32%, 35%, and 30%.
Co-Authors Adelia Leony Tanuwijaya Cherry Chandra Debora Anne Yang Aysia Elizabeth Paula Harits Krishna Rifandi Hendra Santoso Wijaya Isaiah Thomas Joyodiono Jason Averell Lumanto Louis Kidhanny Monica Iko Marita Nia Adela Saputra Shania Paramitha Kusuma Tanti Octavia Tiffany Victoria Hendra Budiono Yobel Manuel Yovita Rosalia