Are America’s plutonium pits too old to perform in the new Cold War? Or are new ones necessary?
“To look at short-term change [in plutonium pits], scientists have created experiments sensitive enough to detect what happens in real time. There are caveats, though. “There seems to be a corrective mechanism that heals some of that change on longer time scales,” according to Dylan Spaulding, who studies the issue of pit aging for the Union of Concerned Scientists.
Raymond Jeanloz agrees: “Something happens over longer time periods that makes [the metal] almost as good as new or maybe as good as new over time periods of 10 or 20 years or more.”
Sprinkled across five western states, in silos buried deep underground and protected by reinforced concrete, sit 400 intercontinental ballistic missiles. Each of those missiles is equipped with a single nuclear warhead. And each of those warheads is itself equipped with one hollow, grapefruit-sized plutonium pit, designed to trigger a string of deadly reactions.
All of those missiles are on “hair-trigger alert,” poised for hundreds of targets in Russia — any one of which could raze all of downtown Moscow and cause hundreds of thousands of casualties.
Except — what if it doesn’t? What if, in a nuclear exchange, the pit fizzles because it’s just too old? In that case, would the weapon be a total dud or simply yield but a fraction of its latent power?
Outwardly, at least, that’s the question driving a whole new era of plutonium pit production at Los Alamos National Laboratory (LANL) and the Savannah River Plutonium Processing Facility in South Carolina.
“The issue of plutonium pit aging is a Trojan horse for the nuclear weaponeers enriching themselves through a dangerous new arms race,” said Jay Coghlan, executive director of Nuclear Watch New Mexico, an anti-nuclear group based in Santa Fe. “Future pit production is not about maintaining the existing, extensively tested stockpile. Instead, it’s for deploying multiple new warheads on new intercontinental ballistic missiles.”
Jay Coghlan, the executive director of Nuclear Watch New Mexico, successfully lobbied former U.S. Senator Jeff Bingaman in 2006 for an amendment to require a plutonium pit aging study by the group of scientists called JASON. Nadav Soroker/Searchlight New Mexico Nadav Soroker
