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The main focus on the topic concerning the selection the weapon system acquisition logistics is the initial spares. This study adopts a creative method and perspective different from those of the past. In its viewpoint of trying to reduce the risk of availability, the study investigates the decision of item selection and quantity. In its method, it adopts individual study with reality based on the factual occurrence and calculation formula of current initial spares to investigate the apparent miscalculated decision shown in the data and find those unstable factors that caused the deficiency of the initial planning. We try to rationalize its error and seek improvement by treating it as an isolated event and reviewing its error in the planning. From the factual data of the individual initial spares we discover that estimated reliability value and stability of system configuration during beginning phase of the weapon system in service are the main sources of availability risks. However, those risks have not been adequately considered in the formula for current initial spares requisition. Furthermore, from the individual analysis of the collected data in this study, our military does not have related working procedure and strategy for making decision on initial spares requisition. This causes the lack of estimating some main parameters, process and historical data of policy change. Hence this study could not analyze the unreasonable aspects further. From the individual analysis of the collected data in this study to analyze the phenomena of the initial spares requisition by our military, we concluded that selection should emphasize on how to verify the suitability of existing formula and parameters instead of the establishment and improvement of formula. This study adopts a method different from the research in the past that deduced from formula. In its risk viewpoint, we investigate the factual data of the individual initial spares in order to establish the methods of weapon systems acquisition management on the logistics item and quantity for the first phase, then on the analysis for the second phase. We improve the deficiencies of the original formula that have not been considered adequately. Also we suggest our military should establish the long-term and stable logistics management strategy to collect and evaluate the parameters, and the items should be analyzed for the initial spares. Hence, the data could help to make a strategic decision for the initial spares and support the needs for related logistics management factors analysis.
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