Practical warehouse decisions
A spare-parts planning workflow
Value and variability are only two parts of a stocking decision.
Beginner-friendly animated guide
Learn A spare-parts planning workflow from the beginning
Value and variability are only two parts of a stocking decision. Use the controls to study one section at a time. No previous warehouse knowledge is required.
Read the complete animation transcript
Start with the consequence of a stockout
A low-cost component that stops essential equipment may deserve a different policy from a high-value optional accessory. Record criticality separately from ABC value. Have the responsible technical and operations teams approve the classification.
Build the review record
- Reconcile item identity, units, supersessions and interchangeable parts.
- Measure comparable demand periods, including measured zeros.
- Record supplier lead time, reliability, minimums and available substitutes.
- Run ABC–XYZ, then add criticality, remaining life, expiry and repair/return loops.
- Agree stock/no-stock policy, approved buffer, reorder trigger, owner and review date.
Invented example
Part A costs ₹300 and has one demand in a year, but its absence stops a critical machine with a long replacement lead time. Part B costs ₹20,000, sells regularly and has two reliable suppliers. Value class alone cannot determine which deserves emergency cover. Record the downtime consequence and mitigation before deciding.
Intermittent demand
Many zero periods can make a normal-demand safety-stock approximation unsuitable. Review event frequency, repairable stock, installed base and service commitments. Do not present a precise buffer as reliable when the input history does not support it.
Download policy review worksheetOriginal field application
Work the problem from evidence to closure
Practice situation
A slow-moving critical spare is proposed for deletion because it has not issued for two years. The useful response is not a generic target or a tick-box answer. Start by defining the exact event, location, item, time period and decision owner so that another reviewer can reproduce what happened.
Decision path
Combine demand behaviour with equipment criticality, failure consequence, replenishment risk and substitution options. Record assumptions before changing the process. Compare the proposed control with the current condition, test it on a limited scope where appropriate, and define the condition that would require work to stop or management to escalate.
Evidence pack
Asset link, criticality, demand, supplier lead time, repair option, substitute, preservation and policy decision. Keep the source record with the action rather than copying only a summary into a presentation. A complete pack should show who reviewed the information, what was excluded, the date of the decision and proof that the action was later checked.
Supervisor walkthrough
- Observe the work at the location and ask the operator to explain the normal sequence.
- Compare the observed sequence with the written standard and system record.
- Separate an isolated exception from a repeated condition by checking recent history.
- Agree one immediate control and one corrective action with a named owner and realistic date.
- Return after implementation and verify the result with evidence, not verbal confirmation.
Common failure to avoid
Do not close the review with “team advised” or “monitor closely.” Those statements do not identify a changed control, accountable owner or effectiveness check. A useful closure states what changed, where it changed, when it was checked and what result would reopen the issue.
Method and verification
This lesson is an operational decision aid. Reconcile definitions to your contracts, system fields and approved local procedure. See the calculation and evidence method.
Editorial review: Amit Mehta · Reviewed 2026-10-16 · Operational education, not legal or engineering approval. How WarehouseOps checks and corrects content.