Repairability index
Repairability index is a score that communicates how readily a product can be diagnosed, disassembled, repaired, and supported with parts or information. Applying Repairability index requires a stated material pathway, lifecycle stage, retained function, waste status, and end-of-life route. Those choices determine how Repairability index can be compared or acted upon.
In simple terms
In practical use, Repairability index is a score that communicates how readily a product can be diagnosed, disassembled, repaired, and supported with parts or information. For Repairability index, the reported value needs a visible unit, denominator, calculation method, uncertainty treatment, and data-quality statement within a declared material pathway, lifecycle stage, retained function, waste status, and end-of-life route. Scores are method-specific and should not be compared across schemes unless their criteria, weighting, and product scope are compatible. Repairability index connects with Repairability and Product life extension; each can affect its application without sharing its definition. The candidate link between Repairability index and Design for remanufacturing remains a separate expansion question supported here by French Ministry for Ecological Transition.
Why it matters
Repairability index matters because decisions about it determine which lifecycle route is preferred, how much function or material value is retained, and where responsibility ends. A defensible use of Repairability index therefore exposes its boundary, method, evidence, responsible actor, and uncertainty before a conclusion is accepted. That discipline keeps Repairability and Product life extension from being treated as proof of Repairability index when their criteria, scope, or results differ.
Example
A product and materials team evaluates Repairability index for a defined decision and records the relevant material pathway, lifecycle stage, retained function, waste status, and end-of-life route. For Repairability index, the team uses cited material from French Ministry for Ecological Transition to calculate the measure with documented inputs, units, and denominator, documenting the period, data, assumptions, and comparison with Repairability. It treats Product life extension and Design for remanufacturing as separate questions rather than proxies for Repairability index.
How it differs
Repairability
Repairability index is a measure; Repairability has a different function. Evidence for Repairability does not establish Repairability index unless both sets of applicable criteria are met.