I am looking right at my reactor terminal in survival mode however when I press K it opens up my inventory and I cant put uranium in the reactor (I am using a small reactor on a small ship). My friend has the same problem but it works fine on a large ship.
12 Answers
The small reactor has only one opening which can be used to access its inventory. At first glance the side with the opening can be mistaken for a base it is supposed to stand on. Make sure you build your reactor oriented in a way that the side with the opening is accessible (or connected to a conveyor system powered by an already running generator and connected to a storage container containing uranium ingots).
Make sure hints are turned on and then mouse over the yellow port, which is on one of the sides. It should give a hint on how to open it. If it doesn't, your pointer is in the wrong place, or it's not a reactor.
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