I have seen the glow of irradiated uranium fuel rods under more than 20 feet of crystal clear water, in a flooded reactor cavity and in the spent fuel pools. The soft warm glow looks like...victory.
Those areas are very safe as long as that radioactive material stays under 20 feet or more of shielding water. My PRD barely measued a fraction of a millirem.
I should have applied the sarcasm tag. Both my grandfather and father worked at Hanover, Rocky Flats, and Y-12. Dad even did a couple years at SRC. Glow in the dark was a running family inside joke. Both of those gentlemen were in safety and fire protection and had full faith in the industries ability to operate safely. As to having faith in the contractors who operated the facilities, not so much.