\nDefine the System and Scope:<\/strong><\/p>\n\n- Clearly identify the equipment or system under analysis.<\/li>\n
- Determine the boundaries: which components are included, and what are the operational parameters (e.g., expected usage, environment)?<\/li>\n
- Establish performance requirements (e.g., availability, reliability targets).<\/li>\n<\/ul>\n<\/li>\n
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Break Down the System:<\/strong><\/p>\n\n- Decompose the system into Line Replaceable Units (LRUs), Shop Replaceable Units (SRUs), and ultimately, down to the lowest reparable component. This is often represented hierarchically.<\/li>\n<\/ul>\n<\/li>\n
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Gather Critical Data:<\/strong><\/p>\n\n- Failure Data:<\/strong> Mean Time Between Failures (MTBF), Mean Time To Repair (MTTR) for each component.<\/li>\n
- Cost Data:<\/strong>\n
\n- Acquisition costs for new components\/spares.<\/li>\n
- Labour rates (technicians, engineers) at various maintenance echelons.<\/li>\n
- Tooling and test equipment costs.<\/li>\n
- Transportation costs for components to repair facilities.<\/li>\n
- Overhead costs for repair facilities.<\/li>\n
- Cost of downtime (lost production, revenue).<\/li>\n<\/ul>\n<\/li>\n
- Logistics Data:<\/strong> Supply chain lead times, inventory holding costs, existing repair capabilities.<\/li>\n
- Technical Data:<\/strong> Repair times, skill requirements, special facilities needed for each component.<\/li>\n<\/ul>\n<\/li>\n
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Define Maintenance Echelons:<\/strong><\/p>\n\n- Identify the distinct levels where maintenance can be performed (e.g., organisational\/field, intermediate\/depot, contractor\/OEM).<\/li>\n
- For each echelon, detail its capabilities, resources, and associated costs.<\/li>\n<\/ul>\n<\/li>\n
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Develop Repair\/Discard Options for Each Component:<\/strong><\/p>\n\n- For every component, model the possible maintenance options at each echelon:\n
\n- Repair on-site.<\/li>\n
- Repair at an intermediate facility.<\/li>\n
- Repair at a depot\/OEM.<\/li>\n
- Discard and replace.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n
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Perform Cost-Benefit Analysis:<\/strong><\/p>\n\n- Calculate the total lifecycle cost for each repair\/discard option for every component. This is where the core repair analysis<\/strong> takes place.<\/li>\n
- Consider both tangible (direct costs) and intangible (downtime impact, reputation) factors.<\/li>\n
- Utilise analytical models (often software-driven) to compare costs and identify the most economically viable solution.<\/li>\n<\/ul>\n<\/li>\n
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Evaluate Non-Cost Factors:<\/strong><\/p>\n\n- Operational Impact:<\/strong> How does the decision affect system availability and mission readiness?<\/li>\n
- Risk:<\/strong> What are the risks associated with each option (e.g., repair complexity, parts obsolescence)?<\/li>\n
- Strategic Considerations:<\/strong> Does the decision align with broader organisational goals (e.g., maintaining in-house expertise, supporting local industry)?<\/li>\n
- Environmental Impact:<\/strong> Repair vs. replace from a sustainability perspective.<\/li>\n<\/ul>\n<\/li>\n
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Document and Implement Decisions:<\/strong><\/p>\n\n- Clearly document the LORA findings and the rationale behind each decision.<\/li>\n
- Translate these decisions into maintenance plans, spare parts provisioning, and training requirements.<\/li>\n<\/ul>\n<\/li>\n
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Monitor and Review:<\/strong><\/p>\n\n- Regularly review LORA decisions as operational conditions, costs, and technology evolve. This ensures the maintenance strategy remains optimal.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
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