Ideal knowledge for a nuclear internship?

Hello guys, a few weeks ago a teacher i have great connection with told me she managed to score me an internship at the largest nuclear reactor in my country (research reactor), since she did her Internship there she has good communication with people from it, and I was wondering what are the ideal knowledges for it? Of course the intention is to stay there especially since nuclear is my favorite field.

Does having an excel/python/SQL/power bi certification help? Working towards python atm, I'm top of my class if that helps in any way.

I have about a year to prepare for it (yes long shot) so it gives me more time to be prepared.