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Journal : International Journal of Science, Engineering and Information Technology

Application of the EOQ (Economic Order Quantity) Method in Determining Chemical Supplies in PT. Semen Indonesia Hidayat Hidayat
International Journal of Science, Engineering, and Information Technology Vol 5, No 1 (2020): IJSEIT Volume. 05 Issue. 01 DECEMBER 2020
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/ijseit.v5i1.8911

Abstract

The competition among products has become commonplace in the industrial world in Indonesia. PT. Semen Indonesia is a company with extraordinary development prospects. Quality control is needed in order to control the product so that when it arrives at the consumer the product is in its best condition, or when the product is still in process, production can be maximized. The method used in this research is Economic Order quantity (EOQ). Based on the resercah, the number of orders for each ingredient is for ammonium nitrate 1, barium chloride 1, ethanol 3, glycerol 1, hydrocloric acid 2, sodium hydroxide 3, strontium nitrate 2. Then, the ROP point or time to reorder each ingredient is for ammonium nitrate 2, barium chloride 4, ethanol 33, glycerol 16, hydrocloric acid 21, sodium hydroxide 4, strontium nitrate 13.Keywords: EOQ (Economic Order Quantity), Chemical Supplies, PT.Semen Indonesia
REDESIGN OF SEWING OPERATOR SEAT USING REVERSE ENGINEERING METHOD Hidayat Hidayat
International Journal of Science, Engineering, and Information Technology Vol 6, No 2 (2022): IJSEIT Volume 06 Issue 02 July 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/ijseit.v6i2.14293

Abstract

We often see that many of the chairs that tailor tend to have a long shape and the width of the seat is quite narrow. The problem of working attitude faced by the sewing machine while running from a non-ergonomic work chair is the attitude of forced labor such as: lifting the operator up, and lifting the shoulder. If the ergonomic problem is not corrected, it will certainly give an excessive burden, musculoskeletal complaints which will be followed by a decrease in the level of work productivity. Therefore, it is necessary to conduct research in an effort to overcome the problems that arise. For this purpose, research was conducted on the Development and Design of Sewing Operator Chairs Using the Reverse Engineering Method. The number of research samples taken were 26 operators. In this study, it was found that there were 5 parts of the operator's seat that were repaired, namely in the seat connection, seat support mat, backrest, seat mat, and frame. And for the Popliteal Length percentile data at the 50th percentile, Hip width using the 95th percentile, Popliteal height using the 50th percentile.