Was Fukushima caused by the Stuxnet virus?

No, a solid core liquid water reactor is under enormous pressures and has a lot of latent heat. They are the most dangerous when they have been shut off because they still need electricity to remove the latent heat. However, policy has always been to shut down the reactor in an emergency even though this makes the reactor more dangerous, the Fukishima reactor was programmed to automatically shut down if an earthquake exceeded a certain level so it did, becoming a more dangerous nuclear reactor. Then of course the grid goes down, Fukishima has battery powered UPS so there's no interruption to their power but instead of having human operators evaluate the risks, they were programmed to automatically start up the diesel generators, many people believe this is the safest thing to do but it isn't, not when earthquakes are followed by tsunamis. The tsunami's flood the diesel generators, diesel generators are very resilient and can survive temporary flooding, if they are off but these were on so they all died. They called in a portable generator skid but they had never prepared for that eventuality and were unable to plug in the portable generator ( why they didn't just cut cables and clamp the bare copper together is beyond me ). The latent heat increased the pressure till the reactor exploded in a steam explosion, the high temperature steam vaporized into hydrogen and oxygen and caused a hydrogen explosion. As no one could enter to add water to the reactor and the storage pools, the fuel rods melted and radiation was released.

The failure was the typical policy failure where safety policies are structured for the uninformed, every measure taken increased the risk. It would seem safer to an uninformed public that it would be best to turn off the reactor so it was programmed to do so, had the reactor remained on, there would've been no problems. The reactor shutoff should've been deferred to operation staff who should've been required to contact a senior engineer if the system was still stable, it should not have been automated. Most people would consider starting the backup generators immediately to be the safest thing to do so they programmed them to start immediately after grid power was lost. They had eight hours of battery time, they should've used the time to determine when and at what level the tsunami would be. Had they allowed the diesel generators to be flooded while inactive, they may have been able to start them after the tsunami passed. As to the portable generator skid, somebody really should've designed the facility to accept all forms of plugs from portable generator skids.

Aside from the design which in itself was a high risk pressurized design, the failure was in policy. Safety policies were decided not on risk but on what an uninformed person would view as being safer. The safety policy was written to be readily accepted by non-technical policy makers.

You see this problem of backup policy everywhere. With computer data centers, they have the concept of a hot spare, if a hard drive fails, a spare comes online and the data rebuilt onto the new spare. Seems like common sense that this would be best as you minimize the time that you are at risk to a second failure so almost every site I've been called in on, has this policy in place, an automatic rebuild. But the first drive is most likely to fail when the system is under heavy use, the failure results in a slight increase in use of the remaining drives as data must be rebuilt from all of them but if the hot spare rebuild starts, the load reaches the theoretical maximum to rebuild all the data, this maximizes the risk of a second drive failure which would cause data loss. I always advocate immediate notification over the automated rebuild, the system load can be reduced, maybe even halted, certainly batch scheduling can stop, critical files can be copied without much stress on the weakened system and the rebuild could then occur under controlled conditions thereby maximizing the chance of success and minimizing the consequences of total data loss. If you want automation, this can be automated but the entire process must be automated, load cessation, primary data duplication, and then controlled rebuild, you can't just take the marketing hot spare setting.

There was no reason for the primary systems to be connected to the network and the reactor was designed before ethernet was invented. A virus could not have caused the problems, stupid policies did. The crime against humanity was the approval of their stupid safety policy, the chief engineer and the president should've been fired.

Stuxnet Fukushima

2

This Site Might Help You.

RE:

Was Fukushima caused by the Stuxnet virus?

Kaspersky labs, the best anti virus software makers have an article about Stuxnet. I found this after reading about a possible connection between this and the Fukushima warning and monitoring systems not reporting properly....

The Lack of spending $600,000 or what ever relatively miniscule ammount to put the dang generators in their own higher building on the ridge, safely above any flooding is the crime against humanity that I see but it would be surprising if there were NOT layers of " modernization" added like digitally controlled Seimens valve controllers, which the Stuxnet was designed to get into & disable? There probably should be manual and steam powered backup systems to scram reactors to mechanically pull rods apart to stop the reactor from further heat production, more excess pressure storage capacity to make such steam explosions impossible? That can't be done ? .

Because North Korea HAS nuclear weapons, not a nuclear program. Iran was not planning for nuclear weapons, just nuclear programs. Now if Israel does anything to North Korea, then North Korea can wipe Israel of the map by pressing the red button. Edit: But just for your information, the Stuxnet did not cause any damage to Iran's nuclear program. I don't know where you got your information from...

yes said above, caused by an earthquake and a tsunami

No, it was caused by an earthquake and tsunami.