Because they were working a nuclear meltdown.
Meltdown with a bang, eh?
No you idiot. Read your own article, what happened is no mystery.
On March 11, 2011, at 2:46 pm local time, a 9.1 magnitude earthquake struck about 40 miles east of Japanâs Oshika Peninsula. The quake, the worldâs fourth largestsince 1900, devastated northern Honshu, Japanâs main island. At the Fukushima Daiichi nuclear power plant, located near the epicenter on the Pacific coast, the temblor damaged cooling systems and cut all electrical power to the stationâpower that is needed to keep water circulating around the active reactor cores and through pools holding decades of used but still highly radioactive nuclear fuel.
Several of the diesel-powered emergency generators at Daiichi kicked in to restart some of the safety systems, but less than an hour after the earthquake a 43-foot-high wave triggered by the quake swept over the sea wall, flooding the facility, including most of the generators, some of which had been positioned in the basement by the plantâs designer, General Electric.
Without any active cooling system, the heat in the reactor cores began to rise, boiling off the now-stagnant water and exposing the zirconium-clad uranium fuel rods to the air, which set off a series of superheated chemical reactions that split water into its elemental components. Hundreds of workers from Tokyo Electric Power Company (TEPCO), the stationâs owner, struggled valiantly to find a way to circulate water, or at least relieve the pressure now building in the containment vessels of multiple reactors.
But the die was cast by the half-century-old design, with results repeatedly predicted for decades. The pressure continued to build, and over the course of the next two days, despite attempts to vent the containment structures, hydrogen explosions in three reactor buildings shot columns of highly radioactive gas and debris high into the air, spreading contamination that Japan still strains to clean up today.
When the plant lost the ability to circulate water to cool the reactors the water/steam superheated and the containment vessel exploded.
What follows that if you canât pull the fuel rods is a meltdown.
In order to have a nuclear explosion you not only have to have a critical mass of fissile material you have to force it into a supercritical mass whereby you get an explosive chain reaction.
Had such an explosion occured the entire plant site would have been turned into a smoking hole and there would be no video or survivors due to the blast, radiation, and EMP.
I posted for Ronald Reagan. The rest is irrelevant.
Besides, Reactor 4 was not in operation (taken off for scheduled maintenance)
You canât and donât speak for Reagan.
The causes, results, timeline and events which led to the meltdown arenât even arguable.
https://static.scientificamerican.com/sciam/assets/media/multimedia/0312-fukushima-timeline/
OK, any reactor trouble leads to instant meltdown, which leads to an explosion.
How interesting, especially in reactors which are in scheduled maintenance
Give up with the histrionic lies already. No such event took place.