More Trouble at Japan Reactors: 2 alarms sound at newly restarted Oi nuclear plant — Error blamed on ‘unstable atmosphere’

Published: June 24th, 2012 at 3:56 pm ET


Alarm activates itself at Japan’s Oi NPP
Jun 24, 2012 09:21 Moscow Time

An alarm activated itself at the Oi nuclear power plant in Japan’s Fukui Prefecture in the early hours of Sunday. 

The plant’s operator has announced that trouble with electric power cables in the third and fourth reactors might have caused the alarm.


Alarm erroneously issued at Oi nuclear plant
Kyodo News
June 24, 2012

The central control room for the Nos. 3 and 4 reactors at the Oi power plant in Fukui Prefecture registered two alarms indicating trouble with electric power cables between late Saturday and early Sunday, but no glitches were found, according to the plant’s operator, Kansai Electric Power Co. 

The utility said the alarm system error is believed to have been caused as a radio signal, which monitors the connection conditions of the cables, was temporarily interrupted due to an unstable atmosphere.


Published: June 24th, 2012 at 3:56 pm ET


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22 comments to More Trouble at Japan Reactors: 2 alarms sound at newly restarted Oi nuclear plant — Error blamed on ‘unstable atmosphere’

  • AGreenRoad AGreenRoad

    Japan Plans To Evacuate 40 Million Citizens; Russia Shocked; via A Green Road

    • hbjon hbjon

      A nuclear power station has radiation detectors positioned around the area to detect any leaks of tritium or other radioactive substances. They can adjust the threshold to alarm at different levels of disintegrating atoms per minute. When the alarm trips, the plant goes into scram, whereby the control rods are inserted into the cores. Nowthen, how can any reactors safely operate in an environment with such high levels of radioactivity? Last year many reactors here in North America were going into SCRAM and they couldn't figure out why. My guess is all the safety alarms have been recalibrated to accept higher and higher levels of radiation. Again, I'm just working on my jigsaw puzzle out loud.

      • very interesting observation Hbjon

        Makes a lot of sense…

        • richard richard

          that does make sense, and high lights the need for independant (the people) dosimeter checks.

          because Hbjon is onto something here.. the residual levels of rads have to forever be incrementing.. and may have crossed earlier alram thresholds.

          this site just keeps bringing more and more issues into the light. fantastic.

      • razzz razzz

        I'm still waiting to hear the reason why some US nuclear plants shut themselves down soon after Fukushima events. After checking, it was confirmed none of the plants had any leaks. Like false alarms. They had to say that much but never said the cause of the alarms going off.

        I always thought it was shades of Chernobyl all over again when other European countries had their fallout sensors going off before Russia notified or even admitted a meltdown.

        The biggest concern is how far away background radiation levels began rising at the time to set off sensors and auto-SCRAM a nuke plant…in Florida.

        Any time the wind blows, will be enough to disturb the atmosphere with fallout. Wonder what are acceptable Japanese background radiation levels now after Fukushima or where sensors are set to allow auto-SCRAM after restarting reactors.

        The whole island of Japan is leaking radiation as they keep moving fallout debris across the island, dumping it, burning it, burying it.

  • AGreenRoad AGreenRoad

    List Of Countries/Nations Closing Down ALL Nuclear Power Plants; via A Green Road

  • AGreenRoad AGreenRoad

    oi vey, they try to restart the devils handiwork, and it sets off alarms…

    That makes perfect sense.. They should listen to the alarms and shut if off permanently.

  • Sharp2197 Sharp2197

    What? They don't know what is happening in their reactor because of the weather? Unstable atmosphere causes alarms, the whole idea causes alarm for me.

  • arclight arclight

    unstable atmosphere?? so they rely on bluetooth or some such?? which can be effected by the atmosphere? ugh!

    i liked this post by janick from tokyo concerning todays protest at chiba.. hope he doesnt mind me quoting him under this article but it makes so much sense

    "..There was a young man, mike in hands, who used the shops'names or buildings'names to shout slogans, and it was irresistibly funny, like (near a hairdresser's) : "Let's save the hairdresser from radiations! Let's save him from Noda!" or: (near a sake and tobacco shop) : "Let's save tobacco ! let's save it from radioactivity ! Let's save itfrom Noda! Let's protect sake! Let's protect it from radiations!" The Suginami-ku group is just so full of energy and so creative (always), it's very exciting to be around them ! Good deed and good time altogether…"

    from the exskf blog

    A Letter To Lady Gaga / February 19 Suginami Anti Nuclear Power Protest

    this is a very powerful message… imo

    no nukes, no more lies!!

  • BreadAndButter BreadAndButter

    If the alarm was audible for nearby residents they must have been freaking out.

  • RememberThis RememberThis

    That is the biggest pile of BS I have ever seen……

    Think about it………. the monitoring equipment is wireless.

    The only thing I can think of that would mess up RF Propagation is RADIATION.

    Correct me if I am wrong.

    BTW Nice to see you all 🙂

    • richard richard

      hi RememberThis – i'm not trying to be a smart a*, but there are more things than just radiation that will affect RF.

      I'm not saying you are wrong in this case, I simply want to point out that in other conditions, other factors may affect RF.

      No supporting material, but I can provide it if need be.

    • HoTaters HoTaters

      Wikipedia has an interesting article on RFI (radio frequency interference). Lots of things can cause it — and more than I had supposed, msyelf.

  • Dr. Anne Lee Tomlinson Maziar anne

    With so much high radiation, would anyone expect anything other than unstable atmosphere? Why ignore the alarms and keep the nuclear plants running? Shut them down now and forever. There is tons of methane also being released into the atmosphere and Krypton-85. There will always be unstable atmosphere after so many meltdowns and after so much accumulation of radiation all over the earth. All nuclear power plants must be shut down immediately. All uranium mining must be stopped immediately. All use of uranium in munitions must be stopped immediately. How many warnings does it take? How many billions must die needlessly?

    • Dr. Anne Lee Tomlinson Maziar anne

      All the melting of the ice is going to put more weight on the active faults around the world and more earthquakes will cause more catastrophic nuclear accidents.

    • HoTaters HoTaters

      Am wondering what all of this is doing to the stability of the ionosphere.

  • lrpingel

    "a radio signal, which monitors the connection conditions of the cables, was temporarily interrupted due to an unstable atmosphere."

    BULL! Atmosphere influences only radio waves that bounce off ionosphere, that is short wave band. Instrumentation will NOT use SW band as antennas required are way too large to be practical. VHF or UHF will be used. Even then using radio communications makes no sense when a cable would be easier and far more reliable. It is obvious we are being lied to, what else have they lied about that we don't know????

  • Reactor Reactor

    It is clear that Kansai Electric Power Company needs to do a stress test on their alarm system. I suggest that in order to confirm proper functionality in an unstable atmosphere, the alarms be tested this Friday, June 29, outside the Prime Minister’s Official Residence.

  • lrpingel

    Even if they used radio waves (rf) transmitted on the cables to monitor them the atmosphere will have no effect. The only atmospheric effect that would affect monitoring is high radiation disrupting the electronics.

  • crystalwind crystalwind

    "…a radio signal, which monitors the connection conditions of the cables, was temporarily interrupted due to an unstable atmosphere."

    I'm assuming this is not true. And if "unstable atmosphere" can cause the alarms to go off for no reason, then couldn't the reverse also be true: "unstable atmosphere" could also cause the alarms to remain silent when there IS some reason?

    Damn the insanity.