Spares Support

Spares and repair parts requirements are determined using the reliability predictions, supply modeling and field usage data from similar systems to ensure the system meets the required operational availability at the lowest life cycle cost The sparing philosophy is dependent upon the final maintenance concept, customer use rates, supply pipeline and repair level analysis of the camera system. Recommended spares in the field consists of the components and consumables identified by the maintenance plan as replaceable by the field activity.

Several factors used in determining the quantity of spares and repair parts include: number of operational sites planned; number of systems fielded and operational; historical data of failures of similar items; and usage rate (operational hours per year). The intent of this sparing philosophy is to identify only those items that should be required for maintenance. This philosophy eliminates unnecessary expense, and justifies the depth of spares by predicting the frequency a spare would be required for that maintenance level.

ROI develops spares lists for each level of maintenance for all ROI delivered equipment. The spares list is compiled after an analysis of the following critical factors: MTBF; camera usage rate; fully mission capable rate requirement; number of systems fielded; number and location of operational sites; desired field maintenance turnaround time; desired depot maintenance turnaround time; and shipping time. Each of these critical factors would have to be defined to determine and develop spares lists.

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