Authors : Hepri Massandi; Adi Fitra; Susan Kustiwan; Tri Ngudi Wiyatno

Volume/Issue : Volume 9 - 2024, Issue 7 - July

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DOI : https://doi.org/10.38124/ijisrt/IJISRT24JUL1663

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Abstract : This research was conducted at a company operating in the construction sector in Cikarang. The researcher conducted direct research on the welding process. The main process of focus in this research is on welding quality defects of the Slag Inclusion type. After knowing the main problem that is the cause of a defect, then carry out an improvement plan using the Root Cause Analysis (RCA) method, which is a method of repairing causal factors by analyzing what, how, and why a factor that causes a defect can occur with the aim of finding the root cause so that There needs to be changes to avoid errors. The RCA method has 2 approaches, namely the Fishbone diagram and 5 whys. Therefore, the author took the title "Increasing the Productivity of the Welding Process in the H-beam Production Line Using the RCA (Root Cause Analysis) Approach at Pt. XYZ” Root Cause Analysis (RCA) is a tool designed to understand the root cause of an event's problems based on causality in a process. The main factor that causes defects is humans who are careless when working, who do not see or observe the material when they want to start work or even underestimate the work. So implementing SOPs is very necessary to regulate workers so they don't work as they please, and outdated machines can hamper production and improve the quality of main raw materials.

Keywords : Defect, Root Cause Analysis, RCA, Productivity.

References :

1. JM Destree Christian, Agung Sutrisno, "APPLICATION OF THE ROOT CAUSE ANALYSIS (RCA) METHOD TO DETERMINE THE ROOT CAUSE OF CONSUMER COMPLAINTS Destree Christian, Agung Sutrisno, Jefferson Mende Department of Mechanical Engineering, Sam Ratulangi University," J. Online Poros Tek. Machines , vol. 7, no. 2, pp. 111–124, 2020.
2. H. Wibowo, "Comparative Analysis of Welding Methods to Control Distortion and Residual Stresses - Review," J. Din. Vocational Tech. Machines , vol. 5, no. 2, pp. 95–102, 2020, doi: 10.21831/dynamics.v5i2.34782.
3. M. Fahrizal, "Analysis of the Results of Welded Joints with the SMAW Welding Method Using SA 36 Material which was Previously Burned at a Temperature of 700˚C and 900˚C for 4 Hours," Inst. Technol. Tenth of November. , 2016.
4. ID Utami, "Quality Control of Brake Lining Products in Non-Asbase Formula Using Statistical Process Control (SPC) and Root Cause Analysis (RCA) Methods at Pt. Xyz Surabaya,” Matrix , vol. 20, no. 1, p. 1, 2019, doi: 10.30587/matrik.v20i1.783.
5. H. Dewi, M. Maryam, and D. Sutiyarno, "Analysis of Defective Products Using the P Control Chart Method and Root Cause Analysis," J. Teknol. Pertan. , vol. 7, no. 2, pp. 10–18, 2018, doi: 10.32520/jtp.v7i2.178.
6. V. Patil and M. Sutar, "Quality control and Statistical Techniques used to improve Productivity and to reduce Rejections due to Casting Defects : A Review," vol. 3, no. 4, pp. 71–78, 2015.
7. MA Irawan, F. Pulansari, and U. National Development Veterans of East Java Jl Rungkut Madya Surabaya, "Analysis of PT XYZ Can Production Quality Control Using the RCA (Root Cause Analysis) Method," vol. 3, no. 1, pp. 260–271, 2024, [Online]. Available: https://doi.org/10.55606/jtmei.v3i1.3311
8. W. Oktavianto, H. Prastawa, and N. Susanto, "Priority Determination Strategy in Reducing Waste in the Production of Brand Chair Oc 14817 at Pt Ebako Nusantara," Ind. Eng. Online J. , vol. 8, no. 3, pp. 1–9, 2019.
9. N. Susendi, A. Suparman, and I. Sopyan, "Study of Root Cause Analysis Methods Used in Risk Management in the Pharmaceutical Industry," Maj. Pharmaceutics , vol. 6, no. 4, p. 310, 2021, doi: 10.24198/mpharmacetika.v6i4.35053.
10. JJ Rooney and LN Vanden Hauvel, “Root cause analysis for beginners,” Qual. Prog. , vol. 37, no. 7, pp. 45–53, 2004.
11. VE Ateng, R. Rahmahwati, and YE (2021). Prawatya, "Proposed K3 System Improvements Using Methods," pp. 124–129, 2019.