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Initially the system maintenance concept may be based

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Unformatted text preview: e goal of a cost-effective system. This is primarily accomplished in the systems engineering process through an active role in implementing specific design features to facilitate safe maintenance actions in the predicted physical environments, and through a central role in developing the integrated logistics support (ILS) system. (See Section 6.5 on ILS.) The maintainability engineer performs several tasks, which are explained in more detail in NHB 5300.4(1E), Maintainability Program Requirements for Space Systems. In brief, these tasks include: • • • • • • • Developing and executing a maintainability program plan. This is usually done in conjunction with the ILS program plan. Developing and refining the system maintenance concept as a part of the ILS concept Establishing and allocating maintainability requirements. These requirements should be consistent with the maintenance concept and traceable to system-level availability objectives. Performing an engineering design analysis to identify maintainability design deficiencies Performing analyses to quantify the system's maintenance resource requirements, and documenting them in the Maintenance Plan Verifying that the system’s maintainability requirements and maintenance-related aspects of the ILS requirements are met Collecting maintenance data under actual operations conditions as part of ILS system validation. Many of the analysis tasks above are accomplished as part of the Logistics Support Analysis (LSA), described in Section 6.5.3. The maintainability engineer also participates in and contributes to major project reviews on the above items as appropriate to the phase of the project. NASA Systems Engineering Handbook Integrating Engineering Specialties Into the Systems Engineering Process 6.4.2 The System Maintenance Concept and Maintenance Plan As the system operations concept and user requirements evolve, so does the ILS concept. Central to the latter is the system maintenance concept. It serves as the basis for establishing the system's maintainability design requirements and its logistics support resource requirements (through the LSA proces...
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