Actually, fun fact: if there's that much uranium, it's unlikely to be extremely radioactive. Why? Because large concentrations of natural uranium lead to a
natural nuclear fission reactor, which depletes the amount of U
235 present in the system. Over a long enough period of time, you start to see very small concentrations of radioactive U
235 in comparison to the non-decaying partner, U
238. Same thing would happen to concentrated artificially enriched Uranium, unless you also had a high concentration of some neutron-absorbing material like graphite. This, unfortunately, also makes your ore completely useless for any sort of fission applications of Uranium. However, you can make loads of depleted uranium shells! Yay ammunition! You also get nuclear by-products as well, but who cares about those...
The extremely high concentration of Uranium also leads to loads of wonderful science questions. Can we scan an asteroid in this system to take a look at its composition? That would tell us if the entire system is abnormally rich in Uranium, or just this planet. If it's the system, the question of why it's there challenges the basic homogenous assumption most cosmologists make. Alternatively, if it's just the planet, that leads to the question of what strange geologic processes formed this structure. Aliens would actually be a very reasonable assumption here. Why are we still talking? There's SCIENCE to do!
Check the scanners again. If we land, carefully monitor life support for radiation contamination. Also, check Cesium and Iodine levels. Both Cs and I would indicate a sustained nuclear reaction that's going on as we speak. The Iodine isn't bad, so long as you take your rad-pills beforehand(if not, it'll ruin your thyroid), and it only has a half-life of about 8 days. Cs, on the other hand, is nasty stuff if it gets into you. Keeps in your bones for a long time.
...Can you tell I just had a class on alternative energy sources, taught by a uranium geologist? And that a good third of the class went to discussing Fukushima?