Whatever is in the labs will not survive for very long in the wild. Prolly not a significant concern.
I was part of the team that designed and built Unit #1 of the Donald C Cook nuclear plant back in the 70s. Holy crap, the regulation and paperwork we had to deal with back then - and this was well before TMI, let alone Chernobyl. I can't imagine what it is like today.
We in this country have a bad habit of ignoring or throwing away perfectly good capabilities. Example: the Shoreham nuclear plant on Long Island. Yes, the utility (LILCO, long gone now) was incompetent resulting in delays and cost overruns. But it was completely finished, ready to go, and then....locked up and torn down without ever having generated 1 watt for customer use. NY ratepayers are still paying that one off in terms of increased rates. Tearing that new plant down was an incredible example of incompetence and malfeasance.