TÜPRAŞ İzmit Refinery plans to use the 10G-321 pump, currently located in the Bulk Loading Unit, to replace the 10G-323 pump currently operating in the isomerate service of the Petroleum Transfer Unit. The purpose of this study is to determine the performance of the 10G-321 pump in its new service. The pump was evaluated for the operation of transferring isomerate product from the Petroleum Transfer Unit to railcars in the Bulk Loading Unit.