In brief
Spare parts supply means ensuring that required spare parts are available at the right time, in the right quality and in the right quantity.
Contents
What is Spare parts supply?
The term is used from two perspectives. From the plant operator's point of view, the aim is to be able to rectify failures quickly and carry out planned maintenance on schedule. From the manufacturer's point of view, spare parts supply describes the commitment to deliver parts for a certain period after the end of series production. In industry, such commitments are usually governed by contract and are not unlimited.
Supply can be fed from various sources: in-house stock, the original manufacturer, distributors and wholesalers, third-party stock, the repair of defective parts or technically equivalent alternatives. The older a plant, the more important the alternative routes become, because manufacturers discontinue product lines or companies disappear from the market.
Stable spare parts supply is based on complete master data, a criticality assessment, suitable stock rules and an overview of life-cycle notifications for the installed components. For plants built internationally in particular, supply is also a question of access to foreign sources of supply.
In practice: maintenance and procurement
For plants with a long service life, it is worth documenting manufacturers' supply commitments and deciding on stockholding or alternatives before they expire. This avoids shortages that only become apparent when a failure occurs.
Synonyms and abbreviations: spare parts availability · spares supply · spare parts provision · aftermarket parts supply
Frequently asked questions
How long must manufacturers supply spare parts for industrial equipment?
For capital goods there is usually no general statutory obligation with a fixed duration. What counts are the commitments in the supply or service contract and the manufacturer's own statements. It is therefore worth recording in writing when purchasing equipment how long original or successor parts are to be available and how customers will be informed of an impending end of supply.
How do you assess the spare parts supply for older equipment?
A proven approach is an inventory of the installed components with manufacturer part number, life cycle status, number of sources, stock level and replenishment lead time. From this, a simple traffic-light rating can be derived: uncritical, monitor or action required. Components with only one source, discontinued status and high importance for production are at the top of the list.
What role does the repair of defective parts play in supply?
Repaired parts are an important additional source, especially for expensive or hard-to-obtain components such as motors, pumps, gearboxes or electronic assemblies. Removed parts are repaired, tested and returned to stock. What matters is whether repair is technically possible and economically sensible, and whether the repaired parts are documented with a test report and condition statement.