Nuclear Watch New Mexico executive direcor Jay Coghlan sees PF-4 as being a bigger scale — and having bigger risks — than the other aging buildings.
“PF-4 is not unique in being old,” Coghlan said. “However, PF-4 is totally unique in currently being the only facility that can process large amounts of plutonium … particularly including plutonium pit production. I think, in part, that’s why the Safety Board focuses more on PF-4 than, to my knowledge, than any other single individual facility.”
| November 7, 2025 santafenewmexican.com
An independent oversight agency wants to see improved safety systems at the facility at the heart of Los Alamos National Laboratory’s plutonium pit mission: PF-4.
The Defense Nuclear Facilities Safety Board reported what it believes to be gaps in a safety analysis drafted for PF-4 and delays in upgrades to safety systems in a letter last month to Energy Secretary Chris Wright.
“Maintaining momentum for these safety infrastructure projects is more important in light of the issues with the safety analysis,” the board wrote in the letter dated Oct. 10. It was signed by former acting chairman Thomas Summers.