Just-in-Time Flow Assessment
Assess whether flow, takt, pull, levelling, quality and replenishment stability are ready to support lower inventory without increasing delivery risk.
Purpose and method
Assess the conditions required to produce and deliver the right item, quantity and quality at the right time.
When to use it
Use JIT when reducing inventory and lead time while protecting flow against instability and supply risk.
Core principle
Just-in-Time means producing what is needed, when needed, in the needed quantity. It depends on stable processes and short response times, not simply on cutting inventory.
What the interactive module provides
- JIT readiness assessment
- Flow risks
- Implementation priorities
- JIT readiness profile, key constraints, risk-controlled sequence of improvement actions
Professional verification: The module supports learning, analysis and documentation. Verify results against actual process conditions, internal standards, safety requirements and competent professional judgement before implementation.
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Recommended workflow
Assess whether flow, takt, pull, levelling, quality and replenishment stability are ready to support lower inventory without increasing delivery risk.
- 1
Clarify customer demand and required response
- 2
Stabilise quality, equipment and standard work
- 3
Shorten changeover and replenishment lead time
- 4
Create flow where possible and pull where necessary
- 5
Reduce inventory progressively while monitoring service
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Practical example
A team plans to halve components at line-side. The readiness assessment shows that supplier lead-time variation and unplanned downtime must first be reduced or the change will create shortages.
Calculation or verification principle
Useful flow indicators include lead time, inventory days, schedule adherence, first-pass yield and replenishment reliability. No single JIT score replaces these process measures.
Required inputs → Expected outputs
- Required inputs
- customer demand, takt, process stability, changeover, quality, inventory, replenishment lead time, levelling and supplier reliability
- Expected outputs
- JIT readiness profile, key constraints, risk-controlled sequence of improvement actions
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Common mistakes to avoid
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Equating JIT with zero inventory
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Reducing buffers before stabilising the process
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Pushing large batches under a Kanban label
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Ignoring supplier and logistics response capability
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Frequently asked questions
What data do I need to use this tool?
Prepare customer demand, takt, process stability, changeover, quality, inventory, replenishment lead time, levelling and supplier reliability.
What result does the module produce?
The module produces JIT readiness profile, key constraints, risk-controlled sequence of improvement actions.
Can I implement the result without further review?
No. Treat the output as a structured engineering and improvement aid. Verify source data, assumptions, safety, quality, legal requirements and local process conditions with competent responsible people before implementation.
LEAN Toolbox
Open interactive tool →Just-in-Time Flow Assessment
Assess whether flow, takt, pull, levelling, quality and replenishment stability are ready to support lower inventory without increasing delivery risk.