It produces Uranium Fuel Cells (enough to supply 256+ reactors constantly running), Uranium Fuel (13/m), Uranium Ammo (107/m), and Sulfuric Acid for Uranium mining. The train travels indefinitely unless the Uranium Fuel Cell provider chest runs low. The train acts as a chest to complete the link to the provider chest. It also stops on a regular timer to ensure that fuel is filled. I couldn't find a way to interrupt for fuel since interrupts are only evaluated when a train is stopped