Inventory management techniques in maintenance of water production plants: a case study of Static Plant Maintenance Department NWSC

Abstract

This study evaluated inventory management techniques in the maintenance of water production plants by the static plant maintenance department at the National Water and Sewerage Corporation (NWSC) focusing on challenges of stockouts of spare parts and delay in acquiring spare parts in NWSC. The specific objectives included examining current inventory management techniques at the department, identifying challenges faced in the inventory management process, and establishing strategies for enhancement of inventory management in the department. This study employed a cross-sectional and descriptive research design with a quantitative approach to collect and analyze data. A total of 63 respondents from the department were selected through simple random sampling and primary data was collected using a structured questionnaire with closed-ended items on a 5-point Likert scale. The data was analyzed using SPSS, focusing on descriptive statistics such as means, standard deviations, frequencies, and percentages. The study reveals that while several inventory management techniques, such as Just-In-Time (JIT), ABC Analysis, Economic Order Quantity (EOQ), Material Requirement Planning (MRP), and Enterprise Resource Planning (ERP), are employed, their application is inconsistent which could lead to inefficiencies. Key challenges identified include inaccurate demand forecasting, data tracking inconsistencies, technological limitations, and poor interdepartmental communication. Despite these obstacles, there is a strong consensus on the need for advanced technologies, improved demand forecasting, and enhanced supplier coordination. The study recommends a standardized approach to inventory management practices across the department, including formalizing the use of JIT, ABC Analysis, EOQ, and ERP systems to ensure consistency and improve overall efficiency. Strengthening supplier relationships and integrating advanced technologies. Additionally, improving demand forecasting, fostering better communication and collaboration between departments, and investing in staff training are recommended to further optimize the inventory management process. The study also highlights the importance of securing adequate resources and implementing internal controls to address issues of theft and mismanagement, thereby reducing operational costs and improving inventory performance.