Abstract: This study examined the influence of Quality Management Systems (QMS) on the performance of the Production Defect Reduction Project (PDRP) at Ruliba Clays Ltd, Rwanda, focusing on process standardization, quality assurance procedures, and continuous improvement practices. Guided by Total Quality Management Theory, Deming’s 14-Point Management Theory, Lean Manufacturing Theory, and the Theory of Constraints, the study adopted a descriptive and analytical research design integrating quantitative and qualitative approaches. The target population comprised 160 operational, technical, and managerial staff, as well as selected customers, using a census sampling technique. Data were collected through questionnaires, interviews, observation checklists, document reviews, and focus group discussions. Quantitative data were analyzed using SPSS Version 26 through descriptive and inferential statistics, while qualitative data were examined thematically. The findings revealed that all three QMS components had statistically significant positive effects on PDRP performance. Process standardization was the strongest predictor (β = 0.301, p < 0.001), followed by quality assurance procedures (β = 0.256, p < 0.001) and continuous improvement practices (β = 0.214, p = 0.001). The regression model explained 66.4% of the variation in project performance (R² = 0.664) and was statistically significant (F = 40.89, p < 0.001). Furthermore, 87.7% of respondents agreed that standardized procedures improve production efficiency, while 85.9% reported that inspections enhance defect detection. Although 81.6% indicated that feedback mechanisms contribute to defect reduction, the consistent application of improvement systems remained an area for strengthening. The study concludes that effective integration of QMS practices enhances manufacturing efficiency, product consistency, and defect reduction. It recommends strengthening process standardization, quality assurance mechanisms, and continuous improvement initiatives to support operational performance, competitiveness, and sustainability in Rwanda’s manufacturing sector.
Keywords: Quality Management Systems, Performance, Production Defect, Reduction Project, Ruliba Clays.
Title: Quality Management Systems and Performance of Production Defect Reduction Project at RULIBA CLAYS Limited
Author: Nzayisenga Honore, Dr. Douglas Nyabuga
International Journal of Management and Commerce Innovations
ISSN 2348-7585 (Online)
Vol. 14, Issue 2, October 2026 - March 2027
Page No: 22-32
Research Publish Journals
Website: www.researchpublish.com
Published Date: 06-October-2026
