The Car parts are called replacement parts, repair parts, service parts and spare parts. They are interchangeable names and they are kept in the inventory for the replacement and repair of the failed units. The spare parts are important feature for the logistic engineering and for supply chain management. They normally comprise of the dedicated spare part management. The capital spare is a spare part that had been acknowledged in having a long life or a small chance of failure and it can cause the long shutdown of the equipment since it will take long to be replaced.
The spare parts are put into two categories, they are consumables or repairable. Normally, the tradeoff is found between the cost in ordering the replacement part and a cost of repairing the failed part. If the cost of the repair is a significant percentage for a cost of the replacement, it will become favorable economically to order the part to replace it. In these cases, the part can be beyond the economic repair or BER and a percentage is associated to the threshold which is called the BER rate. The analysis of the economic tradeoffs is done by the use of the Level of the repair analysis.
The repairable part is a part that can be repaired and it is normally because of economic reasons of the low repair costs. Instead of paying the cost of replacing the finished product, the repairables have been designed in enabling affordable maintenance and since they are more modular. They allow the components in being repaired, removed or replaced easily and it enables cheap replacement. The spare parts will be needed in order to support the condemnation of the repairable parts which are called replenishment spare. The rotable pool is the pool full of the repairable parts and they are set at a part to allow different repairs so that they may be accomplished in simultaneous manner. It may be used in minimizing the stock out condition for the repairable items.
Consumable are the parts which cannot be repaired. They are condemned or scrapped if they fail. Because there is no attempt to do the repair on them, there is a fixed mean time between the MTBF and the replacement rates. The consumption of the consumable is normally high compared to the equivalent of the items that are treated like the repairable part. This is why the consumable are sold at a low cost than the repairable spare parts. Since the consumables cost low and also in high volume, the economies of the scale will be found when ordering in a good number to save with the economic order quantity.
According to the logistics’ perspective, the model for the life cycle for the supply chain may be developed. The model may be called a repair cycle and it consists of the functioning parts that are being used by the equipments operators while an entire sequence of the repair providers and suppliers may replenish the inventory of functional part by repair or by production when others have failed. The sequence may end with the manufacturer and it is the type of the models which can allow the demands of the supply system to get traced to the operational reliability and it allows the analysis of the dynamic of the supply system with the spare parts.
If the stockout conditions take place, the cannibalization may result. It is a place of removing of the parts in the subsystems which is necessary for the repairs or with other device that looks the same compared to the inventory. A source system is normally crippled like the results and when it is temporary, it allows the recipient device in functioning in the proper way like the results of the operational available that maybe impaired.
The industrialization had grown in the commercial manufacturing enterprise like the automotive industry and the computer industry. The resulting complex system had evolved the modular support infrastructure with the reliance on the Car parts in automotive industry with the replaceable computer modules which came to be called field repliceable unit or FRUs.