In logistics, spare parts can be broadly classified into two groups, repairables and consumables.
Economically, there is a trade off between the cost of ordering a replacement part and the cost of repairing a failed part. When the cost of repair becomes a significant percentage of the cost of replacement, it becomes economically favorable to simply order a replacement part. In such cases, the part is said to be "beyond economic repair" (BER), and the percentage associated with this threshold is known as the BRR rate. Analysis of economic trade offs is formally evaluated using Level of Repair Analysis (LORA).
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