Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Journal of Industrial Engineering Management

DYNAMIC SYSTEM MODEL OF RICE COMMODITY AVAILABILITY FOR INCREASING THE NEEDS OF THE SOCIETY OF BALIKPAPAN CITY Hertadi, Christopher Davito Prabandewa; Abdallah, Bayu Nur; Jayanti, Sekar Dwi
Journal of Industrial Engineering Management Vol 9, No 2 (2024): Journal of Industrial Engineering and Management
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jiem.v9i2.1847

Abstract

The availability of rice is a matter of considerable concern; this is related to food needs in an area, one of which is the City of Balikpapan. The city of Balikpapan is a city that has the potential to experience an increase in population due to increased birth rates and immigration and is supported by the discourse on the isolation of the National Capital. In one year, humans are able to spend 0.1146 tons/year. With an increase in population, it has the potential to increase rice consumption in the City of Balikpapan. Therefore, a rice availability simulation is carried out by considering the availability factors by using a Causal Loop Diagram and calculating factor values by using a Stock and Flow Diagram to see what conditions will be in the future after modeling. From the simulation, two scenarios were obtained to overcome the problem of rice availability in Balikpapan City, which resulted in an increase in the procurement and procurement of rice from Bulog and distributors, and the scenario chosen was scenario 2, namely an increase in rice procurement and distribution.
OPTIMIZATION OF PUMP MAINTENANCE TIME IN THE STEAM SYSTEM AREA PT XYZ USING A RELIABILITY AND MAINTENANCE VALUE STREAM MAPPING APPROACH Pratama, Deden Yuda; Sulaiman, Mochamad; Hertadi, Christopher Davito Prabandewa
Journal of Industrial Engineering Management Vol 9, No 2 (2024): Journal of Industrial Engineering and Management
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jiem.v9i2.1750

Abstract

The pumps in Steam System PT XYZ frequently fail, resulting in a cumulative downtime of 15000 hours and potentially affecting output. The goal of this study is to examine the problem by 1) knowing the pump reliability, 2) evaluating the pump maintenance system using MVSM, and 3) offering recommendations based on the reliability and MVSM results in the Steam System Area of PT XYZ. The reliability values of pumps G04-III-A, G04-I-S, G04-I-A, G07-A, and G02-S were calculated as 52,20%, 45,59%, 50,19%, 47,09%, and 43,15%, respectively. The maintenance system was then evaluated using MVSM, yielding a Current State Map with a maintenance efficiency of 51%, a VA activity time of 8927 minutes, and an NVA activity time of 9672 minutes. The Future State Diagram The advice resulted in a 99% gain in maintenance efficiency, and NVA activity time was reduced by 9600 minutes. Maintenance time intervals on pumps G02-S, G04-I-A, G04-III-A, G04-I-S, and G07-A are recommended every 49 days, 31 days, 44 days, 35 days, and 76 days, respectively, while recommendations with the MVSM approach are in the form of eliminating the time delay that occurs when the material is not available, which is done by estimating the time the material is needed and the previous purchase time. This study concludes that by following the recommendations, the pump maintenance system in the Steam System Area of PT XYZ may be optimized.