403 ERROR The request could not be satisfied. A spare part, spare, service part, repair part, or replacement part, is an interchangeable part that is kept in car spare parts inventory and used for the repair or replacement of failed units.
Capital spares are spare parts which, although acknowledged to have a long life or a small chance of failure, would cause a long shutdown of equipment because it would take a long time to get a replacement for them. Spare parts are an outgrowth of the industrial development of interchangeable parts and mass production. A spare tire mounted at the rear of a Mitsubishi Type 73 Light Truck as an example of a repairable spare part. In logistics, spare parts can be broadly classified into two groups, repairables and consumables.
Economically, there is a tradeoff 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. Repairable parts are parts that are deemed worthy of repair, usually by virtue of economic consideration of their repair cost. Rather than bear the cost of completely replacing a finished product, repairables typically are designed to enable more affordable maintenance by being more modular. This allows components to be more easily removed, repaired, and replaced, enabling cheaper replacement. A rotable pool is a pool of repairable spare parts inventory set aside to allow for multiple repairs to be accomplished simultaneously.
This can be used to minimize stockout conditions for repairable items. Parts that are not repairable, are considered consumable parts. Consumable parts are usually scrapped, or “condemned”, when they are found to have failed. Because consumables are lower cost and higher volume, economies of scale can be found by ordering in large lot sizes, a so-called Economic order quantity.
There is no UK or EU legislation which states that spare parts have to be available for any set period of time, but some trade associations require their members to ensure products are not rendered useless because spare parts are not available. From the perspective of logistics, a model of the life cycle of parts in a supply chain can be developed. When stockout conditions occur, cannibalization can result. This is the practice of removing parts or subsystems necessary for repair from another similar device, rather than from inventory. The source system is usually crippled as a result, if only temporarily, in order to allow the recipient device to function properly again. Industrialization has seen the widespread growth of commercial manufacturing enterprises, such as the automotive industry, and later, the computer industry.