主要ポイント
- Moisture migration and condensation cause most storage losses.
- Segregation prevents cross-contamination and preserves lot identity.
- Monitor conditions with records, not with periodic impressions.
Moisture and temperature
Warm material stored in a cooler environment drives condensation at surfaces, creating localised high-moisture zones where moulds develop. Cooling before storage and monitoring temperature in bulk stock prevents most of this.
Segregation and lot identity
Physically separate incompatible materials, separate quarantined from released stock, and record which lots occupy which bin or location. Commingling in bulk storage destroys the lot identity traceability depends on.
Pest and contamination control
Sealed structures, cleaning between lots, monitoring for insect and rodent activity, and control of bird access. Cleaning records matter as much as the cleaning itself when a contamination investigation begins.
確認事項
- Temperature and moisture monitoring records for bulk storage
- Lot-to-location records maintained at goods receipt
- Documented cleaning and pest monitoring programme
管理すべきリスク
- Mould and mycotoxin development in condensation zones
- Cross-contamination between stored materials
- Quarantined stock released in error due to poor segregation
よくある誤り
- Storing warm material without cooling
- Topping up bins without recording the new lot
- Treating storage as a warehouse issue outside quality scope
よくある質問
What is the single most valuable storage control?
Moisture control, because it drives mould growth, caking, self-heating and mycotoxin development simultaneously.
How should quarantined stock be handled?
Physically separated and system-blocked, with a written release rule. Marking alone is not sufficient in a busy warehouse.