VED Analysis for Factory Spares: Criticality Worksheet
Classify factory spares as vital, essential or desirable using stockout consequence, substitutes, recovery time, evidence and a named review owner.

VED analysis classifies inventory by the consequence of not having an item when it is needed. For factory spares, the decision should use production, safety, substitution and recovery evidence rather than price alone.
A ₹500 seal can stop a critical line while a ₹50,000 spare waits unused for months. VED analysis keeps that operational consequence separate from unit value.
The classification needs a dated reason and an owner. A letter without evidence will not guide purchasing.
Classify the consequence of stockout
| Spare | Stockout consequence | Substitute | Recovery time | Class | Review owner |
|---|---|---|---|---|---|
| Furnace safety relay | Safety trip cannot reset | None approved | 3 days | Vital | Maintenance head |
| Main compressor seal | Plant air capacity drops | Temporary standby | 1 day | Essential | Utilities engineer |
| Packaging printer roller | Manual workaround available | Shared spare | 5 days | Essential | Packing supervisor |
| Office label printer | Administrative delay | Another printer | 2 days | Desirable | Administration |
These labels are illustrative. Your plant must decide severity with the people who own the machine, process and safety response.
Use a repeatable decision test
- Describe the exact function the spare protects.
- Record the effect on safety, quality, output and customer commitment.
- Confirm whether an approved substitute or standby resource exists.
- Use observed supplier and repair lead time, with the evidence date.
- Name the person who approves the class and the next review trigger.
Unit price belongs in a separate HML review. Annual consumption value belongs in ABC analysis. Mixing all three produces a label that nobody can explain.
Keep the classification current in Optiwise
In Optiwise, configurable fields and no-code workflows can place the VED class, reason, approval, evidence date and review owner on the item or its review record. Inventory, purchase and production records then give that decision current stock, open supply and demand context.
Use Optiwise inventory to follow usable stock and movements, and Optiwise purchase to connect approved replenishment. The Google helpful-content guidance also supports this page design: a real worksheet answers the task more usefully than repeating a definition.
Questions from manufacturing teams
Does VED mean expensive items are vital?
No. VED measures operational criticality. HML classifies by unit value, and ABC uses annual consumption value.
Can one spare have different VED classes in two plants?
Yes. Different processes, standby equipment, substitutes and recovery times can change the consequence of stockout.
How often should we review VED classes?
Set a review date and also review after a machine, substitute, supplier lead time or risk control changes.
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