Broken steering box

[RupertW]

Hello all, working on the Chummy project today and was very annoyed to notice that the steering box has cracked as per the picture below. Not entirely sure how it's happened, but it's possibly down to fairly extensive previous use as a go-kart without a body on and therefore no column support, or had possibly been knocked by something while the body was off.
So the question is, can this be repaired safely if welded up to a professional standard?