Speaking from experience in bad situations at nuclear plants, this is the last thing I would want. No one knows the insides of a plant like the operators and engineers who care for it.
I've taken higher ups in bad places before, and they are what we called "dose hores," meaning they do everything they can, including walking close to high rad areas, or leaning over grating to rack their dose up, just so they can hit their limits and be denied access back in.
Heh, I did not mean so they could help. But if you are going to ask for volunteers to possibly give their lives and you don;t even equip them with the required safety equipment, the decision maker should go in first. You know, lead by example instead of coming to my funeral presenting a medal.