Posted in

Por qué EE. UU. está resucitando Three Mile Island NH

Por qué EE. UU. está resucitando Three Mile Island NH

Three Mile Island may be restarted to power Microsoft data centers - Los  Angeles Times
March 28th, 1979. The day the worst nuclear incident in US history unfolded. It was an accident at the 3mile Allen nuclear power plant. An unprecedented series of mechanical failures and human errors that took the reactor close to a meltdown. Monitors tried to determine exactly how much radiation was released.
One of the two reactors at 3-M Island in Pennsylvania suffered a cooling malfunction that caused part of the core to melt, releasing radioactive gas into the air. It became a cautionary tale of the dangers of atomic energy and remains a crisis the nuclear industry still hasn’t fully recovered from.
But now, decades later, this site is being given a remarkable rebirth. The plant is being switched back on for a purpose that few would ever have predicted. Powering a tech giant’s plans for the future of AI. Before there was Chernobyl, before there was Fukushima, there was this 3mile island.
On a now infamous night in the late ‘7s, this nuclear power station on the banks of the Susahana River experienced a catastrophic incident that shocked the world. In the early hours of the morning, the cooling pump on the unit 2 reactor suddenly failed, causing pressure inside the main system to increase. A safety relief valve was then activated to bring the pressure back down, which became stuck in the open position, but the instruments in the control room didn’t show this.
Operators were unaware pressure had dropped to dangerous levels despite alarms ringing and warning lights flashing. Meanwhile, the reactor core where the nuclear fishision takes place was becoming starved of cooling water, causing it to badly overheat and go into what’s called a partial meltdown. The uranium fuel rods were so damaged they began leaking radioactive material into the atmosphere, resulting in a vast evacuation zone being established around the site.
Some 140,000 people had to leave the area. Fear was already erupting around 3M island. fear that was to slither and jolt around for days to come. Amazingly, there were no injuries or deaths. According to the US Department of Energy, the exposure had no detectable health effects on the plant workers or surrounding public.
Even so, unit 2 was beyond repair and never worked again. But the wider impact was far greater. This event prompted a surge of tougher rules on the industry led by the Nuclear Regulatory Commission or NRC. It didn’t help that things had gone wrong at other locations before 3M Islands. The accident that happened at 3M Island was not the first accident that had started in that way.
A lot of the precursors, a lot of the events and a lot of the conditions that led up to the nuclear accident had actually been seen at other nuclear power plants in the industry. Patrick White is research director at the Washingtonbased think tank, the Nuclear Innovation Alliance. And so that resulted in kind of a culture of trying to capture these lessons learned from what we call near miss events and other activities so that all folks in the nuclear industry can learn how to more safely operate their plants.
So presumably the damage done at 3M Island was so great that the plant was immediately closed and that was that. Well, no. Because it was entirely separate from the reactor that failed, unit 1 was able to continue and keep producing power for another 40 years. That was until 2019 when the station was shut down completely.
Like many other nuclear sites in the US, it had struggled to compete with cheaper forms of energy like natural gas and renewables. Hundreds of jobs were lost and the long laborious process of decommissioning the plant began. But 5 years later, the location of one of the world’s most notorious near disasters was thrown the most unexpected of lifelines.
Constation Energy, which acquired Unit One back in 1999, struck a deal with Microsoft that will see the site make a dramatic comeback. It’ll do so under a new name, the Crane Clean Energy Center. Now, not only is that going to see Three Mile Island turn its last remaining reactor back on again

Read More