Client-Side Logistics Sandbox · Zero Telemetry
Yemen Medical Logistics & Cold-Chain Disruption Workbench
Compute real-time thermal holdover reserve across Aden, Hudaydah, Sana'a, Taiz, Ma'rib, and Sa'dah medical supply corridors under checkpoint impedance and peak ambient heat.
Protocol Rule
Passive WHO PQS vaccine carriers lose 28–38% of rated holdover autonomy when ambient coastal temperatures exceed 38 C or when receiving clinics rely on rationed diesel generators. Solar direct-drive (SDD) ice banks preserve 2–8 C stability across 48–72 hour transit interruptions.
Corridor Thermal Excursion Calculator
1. Target Governorate Corridor
2. Medical Supply Thermal Class
3. Receiving Cold-Room Architecture
4. Checkpoint & Road Delay
10 h
5. Carrier Holdover Rating
48 h
URGENT · BUFFER DEPLETION
Taiz: narrow thermal reserve across 21 h corridor transit.
Total Transit
21 h
Thermal Margin
+27 h
HeRAMS Full
48%
Dispatch prior to dawn thermal peak via Aden to Tur Al-Bahah switchbacks. Attach 30-day electronic logger (30DTR) and verify solar autonomy at destination.
Essential Supply Thermal Limits & Failure Thresholds
Model assumptions reflect WHO PQS E004 insulated passive container testing at 43 C continuous ambient stress and field fuel-rationing penalties. Always verify physical Vaccine Vial Monitor (VVM) stage and 30DTR excursion alarms on clinic receipt.
| Medical Commodity | Target Window | Excursion Failure Point | Field Mitigation Protocol |
|---|---|---|---|
| Pentavalent / IPV / OCV Vaccines | 2–8 C | <0 C freeze or >8 C prolonged VVM shift | Conditioned ice packs (0 C sweat) + SDD bank |
| Unopened Human / Analog Insulin | 2–8 C | >30 C coastal cab soak | Insulated phase-change carrier + dawn dispatch |
| Oxytocin Ampoules | 2–8 C | >25 C cumulative potency loss | Stage in maternal SDD unit; separate from dry kit |
| Hemodialysis & Trauma IV Fluids | <30 C | Direct solar trailer heat >40 C | Shaded tarpaulin staging; night port clearance |