Before vs After: From Bottlenecks to Stable Throughput at -25°C

Quick Summary:
This benchmark case compares two operational states of the same -25°C frozen warehouse before and after forklift system optimization. Without expanding space or adding automation, the project achieved measurable gains in uptime, safety, and throughput by rethinking forklift selection, battery strategy, and attachments as a unified system.

1. Project Context (Anonymized, Same Warehouse)

  • Facility type: Export-oriented frozen food distribution center

  • Operating temperature: -25°C

  • Racking: Selective + double deep racking

  • Peak challenge: Seasonal volume surge with fixed shipping cut-offs

The warehouse footprint, storage system, and staffing level did not change during the benchmark period.
Only the フォークリフト system strategy was adjusted.

2. BEFORE: Original Forklift Setup & Operational Reality

Forklift Strategy (Before)

  • Mixed standard electric forklifts used across all zones

  • No differentiation between frozen and non-frozen tasks

  • Standard batteries with frequent mid-shift charging

  • Minimal use of attachments

What Looked Fine on Paper

  • Adequate forklift quantity

  • Acceptable average throughput

  • No obvious safety violations

What Happened in Reality

  • Forklift availability dropped sharply during peak shifts

  • Battery voltage instability caused unplanned stoppages

  • Operators spent extra time repositioning pallets

  • Congestion increased at aisle intersections

3. BEFORE: Performance Snapshot

📊 Operational Metrics — Before Optimization

Indicator Observed Situation
Forklift uptime Unstable during peak hours
Battery interruptions Frequent mid-shift
Pallet positioning accuracy Inconsistent
Peak-hour congestion 高い
Operator fatigue Increasing
Safety incidents Trending upward

The warehouse had enough equipment, but insufficient effective capacity.

4. AFTER: Optimized Forklift System Strategy

Instead of adding forklifts, the project applied a system-level adjustment focused on three levers:

1️⃣ Forklift Assignment by Zone & Task

  • Dedicated cold-storage electric forklifts for frozen aisles

  • Ambient-zone forklifts removed from frozen operations

2️⃣ Battery Strategy Upgrade

  • Standard batteries replaced with cold-rated battery systems

  • Charging strategy aligned with shift patterns

3️⃣ Targeted アタッチメント 配備

  • Side shifters added to narrow-aisle forklifts

  • Fork positioners used in mixed-pallet staging zones

No racking changes. No automation. No additional headcount.

5. AFTER: Performance Snapshot

📊 Operational Metrics — After Optimization

Indicator Observed Situation
Forklift uptime Stable across peak shifts
Battery interruptions Rare
Pallet positioning accuracy Consistent
Peak-hour congestion Controlled
Operator fatigue Reduced
Safety incidents Decreased

6. BEFORE vs AFTER — Direct Benchmark Comparison

📊 Forklift System Benchmark

Dimension BEFORE AFTER
Forklift utilization Theoretical Effective
Battery reliability Unpredictable Stable
Handling precision Operator-dependent System-assisted
Peak throughput Bottlenecked Predictable
Maintenance pressure Reactive Preventive
Expansion need Considered Deferred

The same warehouse delivered more output simply by removing hidden friction.

7. Financial & ROI Implications

Avoided Costs

  • Additional forklift purchases

  • Emergency battery replacements

  • Overtime during peak periods

Value Created

  • Higher shipment reliability

  • Lower maintenance disruption

  • Improved safety and operator confidence

The project achieved a short payback period primarily by converting existing capacity into usable capacity.

8. Key Differences That Made the Outcome Change

This benchmark highlights several decisive shifts:

  • より equipment quantity → equipment effectiveness

  • より average performance → peak reliability

  • より reactive fixes → system design

These shifts are particularly impactful in frozen environments where small inefficiencies are amplified.

9. Who Should Use This Benchmark as Reference

This benchmark case is especially relevant for:

  • Frozen warehouses operating below -18°C

  • Facilities facing unexplained forklift downtime

  • Operations considering fleet expansion

  • Export-oriented cold storage with fixed deadlines

If your warehouse experiences peak-period instability, the BEFORE state will likely feel familiar.

10. Google Popular Topics (Contextual Answers)

Why didn’t adding forklifts solve the problem initially?
Because battery reliability and task misalignment limited effective capacity.

What delivered the biggest improvement?
Battery stability combined with better task assignment and attachments.

Was automation required?
No. The benchmark improvement was achieved without automation.

Is this approach scalable?
Yes. The same logic applies to larger and more complex facilities.

Can this be applied to other cold storage types?
Yes, particularly seafood, export, and multi-temperature warehouses.