A thesis submitted to the Council of the College of Administration and Economics, University of Karbala, in partial fulfillment of the requirements for the degree of Master of Science in Business Administration

Submitted by

Mohammed Ali Hassan Al-Fadhili

Supervised by

Professor Dr.

Mahmoud Fahad Abdul Ali Al-Dulaimi

Abstract 

This study aims to identify and examine the extent to which maintenance quality influences the improvement of sustainable performance in oil organizations, by analyzing the explanatory relationship between the dimensions of maintenance quality (human resources, repair time, flexibility, and cost) and sustainable performance. The study adopted the descriptive–analytical approach due to its ability to describe quantitative data and interpret causal relationships between variables using various statistical tools. The sample included (120) employees working in the maintenance department of the Malaysian company PETRONAS, who were selected using a purposive sampling method because of their direct relevance to the subject of the study.

The applied aspect relied on a questionnaire based on the five-point Likert scale as the main tool for data collection. Statistical software (SPSS, AMOS) was used. Through this study, the researcher seeks to present a vision that clarifies the role of maintenance quality in supporting sustainable performance, enabling organizations to benefit from understanding the role of high-quality maintenance as an approach to enhancing the sustainability of operational performance and achieving added value for stakeholders.

Keywords: Maintenance quality, sustainable performance.