Abstract: A twoechelon supply chain with multiple spots is addressed in this paper.There are two emergency item transportation policies,namely that with and without transshipment.With random item demands considered,mathematical models are developed for different policies to calculate system indexes for the two policies.Based on the models,performance is evaluated for comparison between these two policies.Numerical results show that the emergency item supply policy with transshipment can significantly reduce the system total cost.

Key words: emergency transshipment, direct delivery, two-echelon supply chain