Reactors No. 5 and 6 were NOT in cold shutdown after quake, implies report by US nuclear industry — Cooling at Spent Fuel Pool No. 5 stopped until cables installed — Fresh fuel had been loaded into both reactors

Published: November 13th, 2011 at 3:28 pm ET
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Special Report on the Nuclear Accident at the Fukushima Daiichi Nuclear Power Station, INPO (Institute of Nuclear Power Operations), November 2011 [Emphasis Added]:

Excerpts

  • “Four of the five emergency diesel generators on units 5 and 6 were inoperable after the tsunami”
  • “One air-cooled emergency diesel generator on Unit 6 continued to function and supplied electrical power to Unit 6, and later to Unit 5, to maintain cooling to the reactor and spent fuel pool.”
  • “Unit 5 had been shut down and in an outage since January 3, 2011. Fuel had been loaded into the reactor and the reactor pressure vessel (RPV) reassembled.”
  • “Unit 6 had been shut down and in an outage since August 14, 2010. Fuel had been loaded into the reactor and the RPV reassembled.”
  • “The Unit 6 air-cooled EDG and portions of the electrical distribution system survived the tsunami and were used to reestablish cold shutdown on units 5 and 6.”
  • “After the tsunami impacted the site, operators were able to use the 6B emergency diesel generator (EDG) to provide power to cooling systems for the Unit 6 spent fuel pool. After installing temporary cables, the 6B EDG [generator] provided power to Unit 5 spent fuel pool cooling.”

Read the report here: http://www.nei.org/resourcesandstats/documentlibrary/safetyandsecurity/reports/special-report-on-the-nuclear-accident-at-the-fukushima-daiichi-nuclear-power-station

Reactors No. 5 & 6
Published: November 13th, 2011 at 3:28 pm ET
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39 comments

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39 comments to Reactors No. 5 and 6 were NOT in cold shutdown after quake, implies report by US nuclear industry — Cooling at Spent Fuel Pool No. 5 stopped until cables installed — Fresh fuel had been loaded into both reactors

  • Jebus Jebus

    If the control rods were still in place and the reactors not on line yet with the fresh fuel, then the only concern would be the SFP’s with the hot spent fuel.
    Am I correct on this?


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    • Jebus Jebus

      OR what percentage were they coming online at?


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      • ENENEWS Staff

        Power sources were used “to reestablish cold shutdown on units 5 and 6.”

        This implies that cold shutdown at 5 and 6 was not established before reconnecting the generator.

        “After the tsunami impacted the site, operators were able to use the 6B emergency diesel generator (EDG) to provide power to cooling systems for the Unit 6 spent fuel pool. After installing temporary cables, the 6B EDG [generator] provided power to Unit 5 spent fuel pool cooling.”

        This shows Unit 5 SFP was without cooling for a period of time.


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    • Pallas89juno Pallas89juno

      Dear Jebus: I would like to know the answers to those questions, as well. The blackout has been so effective on me, when it comes to FDI R5 and R6, that I can’t remember what their original advertised conditions were off the top of my head.


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      • theonlyjesse

        If memory serves, they were in cold-shutdown for maintenance and refueling?

        the industry says that about every freaking nuclear plant, though. so I could be misremembering.


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        • ENENEWS Staff

          “Unit 5 had been shut down and in an outage since January 3, 2011. Fuel had been loaded into the reactor and the reactor pressure vessel (RPV) reassembled.”
          “Unit 6 had been shut down and in an outage since August 14, 2010. Fuel had been loaded into the reactor and the RPV reassembled.”


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        • stock stock@hawaii.rr.com

          I think they were really just being used as a low cost way of storage of spent fuel in their fuel pools.


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  • hbjon hbjon

    I am pretty sure they got offsite power restored before any meltdown occurred. Backup generators were working for these two npp’s. If there were cracks in the sfp’s, etc. they needed to keep adding the coolant. There may be damaged fuel rods that are leaking stuff into the environment. God only knows. And God aint telling nobody.


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  • Sirius

    It’s strange, though, that none of the webcams at Fukishima Daichi ever showed images of reactors 5 and 6.


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  • Jebus Jebus

    So once they load the fuel, the reactors start “warming up”, even though the control rods would be fully in place?
    OR
    They were bringing them online, that takes about a week IIRC?


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    • gr81 gr81

      Unless the quake shook control rods and or power rods loose or down.


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      • Jebus Jebus

        8.9 quake, beyond design values… argg!

        From an NRC Email posted way way back…

        The earthquake that hit Japan last Friday resulted in the ground shift of 8 ft ; i.e., roughly the site PGA of
        2.67g. The site experienced a peak ground acceleration that was more than 2.5 times the upgraded PGA
        capacity of the Fukushima units.
        In March 2008 TEPCO upgraded its estimates of likely peak ground acceleration (PGA) for Fukushima to 0
        .61g, and other operators have adopted the same figure. In October 2008 TEPCO accepted 1.02g PGA as the
        new seismic design basis for Kashiwazaki Kariwa, following the July 2007 earthquake there. Reportedly, the
        Fukushima units were upgraded to 1.02 PGA in 2009.
        By comparison, the certified designs of new reactors in the US are based on PGA of 0.3g.

        Very possible given the fact that North Anna’s control rods and fuel rods were screwed up with a 5.9 quake.

        Sorry Mancer but, Oh God! We could be in more trouble…


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  • Digilert 100

    So once again TEPCO and the Japanese govt’ get caught lying. Surprise surprise.


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  • This is not new news.

    There were early reports of both cesium and iodine collecting in the fuel pools of reactors 5 and 6 in march. The iaea choose not to continue updating the status of these reactors, after temporary / emergency cooling systems were installed as well as outside power to the stations.

    The iaea has admitted both hydrogen being emitted as well as detecting products of nuclear fission.

    The only thing they have accomplished in respect to the reactors is maintaining a below boiling point temperature in the facility (allegedly). As well as drilling holes for venting in the roofs. To remove excess hydrogen from the reactor housings. (outer containments).


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    • Lacsap Lacsap

      They may have been drilling holes in the roof but they also vent contaminated air out of the plant with allot of air filters which you can see in this video (they big tubes attached to the blue machinery) http://www.japanquakereport.com/tepco-video-of-1st-people-inside-fukushima-reactor-since-disaster


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    • In my opinion the reactors are now 100% out of commission. Suffering damage to both their cooling systems, and ability to generate power. Otherwise the reactors no doubtfully would have been put back into commission months sooner.
      Another direct problem in prior months was tepcos choice to use saltwater in the fuel pools of the reactors 5 and 6; This was to keep cooling levels above the danger zone.

      However desperate times called for desperate measures. The choice made a 20 million dollar investment a paperweight quite literally overnight. The fact that they made this decision only supports that nuclear fuel was exposed above the surface of the coolant (which would also explain the high levels of hydrogen reported in early march).

      The fact that another huge accident has not occurred on site in this time; Is to me only an indication that in only a short amount of time ‘one will’.


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  • dosdos dosdos

    From what I remember, and I might be a little fuzzy on dates, 5 and 6 were reloaded with fuel in February after modifications to both reactor vessels were completed. The fuel rods were in place with the fuel at the time of the quake. They had run some tests to make sure that 5 and 6 were ready for restart, so technically, they were not in cold shutdown, as the temp hadn’t dropped on the tests to cold standards.

    However, they had not been given permission to be brought back online by Yuhei Sato, the governor of Fukushima. He had promised permission to restart, but hadn’t yet given it, as they weren’t quite ready for a restart. Unlike his predecessor Eisaku Sato, who was a staunch anti-nuclear activist, and had been impeached for a 2007 bribery scandal he claimed was trumped up by TEPCO, Yuhei Sato was very pro-nuclear until 3/11 and allowed the MOX modifications to Unit 3. After 3/11, he was furious and denied TEPCO the right to restart any unit in Fukushima, at both Daiichi and Daini. TEPCO was not happy that they would not be allowed to restart their functional units in Fukushima, since they desperately wanted 5 & 6 for power to aid in the crisis with 1-4.

    However, this does not rule out a criticality in the reactors and/or spent fuel pools during the period where power had not yet been brought into the plant from the grid. In fact, there were issues reported for 5 & 6, though they were not exactly highly detailed in the reports. There was no doubt more going on than was being offered to the public at the time.


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  • Anthony Anthony

    Advising the audience, many of whom were uprooted from their native lands by the radiation leak, the Dalai Lama said it was always better to take precaution.

    “More natural disasters might come in the future because of global warming, so it is better you move to higher grounds and rebuild your home and family with greater enthusiasm”.

    Crediting his late mother for bestowing in him the seed of compassion, the Dalai Lama said that warm heartedness and kindness were the ultimate source of optimism and inner strength.

    http://phayul.com/news/article.aspx?id=30337&article=The+Dalai+Lama+braves+radiation+threat%2c+Interacts+with+victims


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  • jackassrig

    Four out of the five emergency generators did not operate because they were water cooled. Cooling water has to be supplied to the lube oil and coolant of the engine. Usually these are shell and tube exchangers. The cooling water could not be supplied because the main circulators were down or smaller electric driven pumps. The one generator that was running was an air cooled machine and did not require cooling water. Their coolers are fin fan much like the radiator on your car. Who in their right mind would have water cooled emergency generators. If the plant cannot supply cooling water, the generators stop on high temperature. IMHO.


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  • jackassrig

    I think what was going through their pee brains was if the plant blacked out, they could start the air cooled machine supplying power to critical pumps and equipment. Then the 4 other EG would start and water would be supplied to the core. However they had a catastrophic event where they needed all of the generators at once and they could start 4 out of the 5.


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  • Lacsap Lacsap

    I’m reading this PDF on Tepco site and in the bottom it says: Unit 5, 6 Normal operation. Unit 1 to 4 7: Outage due to regular inspections.

    -Unit 1 has been under regular inspection, No 16, since August 16, 2011.
    -Unit 7 has been under regular inspection, No 10, since August 23, 2011.
    http://www.tepco.co.jp/en/press/corp-com/release/betu11_e/images/111113e12.pdf

    Unit 7? It is to be build in October 2016? So are there 7 units already (in trouble)? I don’t get it.

    Fukushima Daiichi (Unit.1) General Electric BWR 460 Mar.26.1971
    Fukushima Daiichi (Unit.2) General Electric BWR 784 Jul.18.1974
    Fukushima Daiichi (Unit.3) Toshiba BWR 784 Mar.27.1976
    Fukushima Daiichi (Unit.4) Hitachi BWR 784 Oct.12.1978
    Fukushima Daiichi (Unit.5) Toshiba BWR 784 Apr.18.1978
    Fukushima Daiichi (Unit.6) General Electric BWR 1100 Oct.24.1979
    Fukushima Daiichi (Unit.7) Proposed TBD ABWR 1380 October 2016
    Fukushima Daiichi (Unit.8) Proposed TBD ABWR 1380 October 2017


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  • Johnny Blade Johnny Blade

    Well shit fire & save the matches!!-I was clinging to the notion that Reactor’s 1-4 were obviously all FUKuD UP and “why wouldn’t they admit that 5 & 6 weren’t percolatin’ dry too?~But had they been intact & capable of providing juice to # 1 thru 4 right away-could they have theoretically stopped or minimized the events that followed? the vent holes & hoses are pretty damning in any event…


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    • Radio VicFromOregon

      I recall the structural damage being so great that even if there was electrical power, there was no where to hook anything up. The time it took to get through the debris and re-establish electrical receptacles on site took the days in which the meltdowns occurred. There were different teams – those setting up offsite power, those clearing debris, those repairing damaged equipment, those figuring out how to get water to the reactors and SFP’s, etc. Having juice from a closer source probably wouldn’t have done all that much as it turns out. The place was a wreck and wouldn’t run regardless.


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      • Johnny Blade Johnny Blade

        I remember that too, that’s why I am suspicious of that statement regarding them wanting to use the power from 5-6 for restoring cooling to the rest of the joint. I’d bet my food stamp allotment that those first responders are all dead,dying or if they were more prominent citizens or TEPCO management-they’re in some high-end cancer treatment center getting cutting-edge treatments that only take on patients with “special’ credentials. Also,I’m thinking that the ongoing detections of fresh crap in the EU is actually coming from Fuku as well! I had almost forgotten sickputer & some of the group setting out timelines they’d expected those big release events from the last week of Oct.-not just the one on the 22nd,and it fits in nicely with those monitors ringin’ & dingin’ away! When you can sit watching the Tepco Cam on any given night for long enough and sure enough,stuff starts glowing & sparking & smoking and it’s never really stopped!!-It was a ballsy move on their part to allow a busload of media people to roll in there & take the chance that their version of Yellowstone’s “Old Faithful” didn’t start frothing up while they were on their “field trip”! Another thing is that I have been pretty good at figuring out what people are about by their movements,posture & facial expressions and even better in person or recorded and live video and I could see some things in their eyes that were telling-including guilt for being part of the farcical act being put on,fear,shame & a handful of ‘em had the “1,000 yard stare” and probably very good at making sure nobody tried passing any notes while teacher wasn’t looking. Bldg.#4 looks precarious at best & I wouldn’t like to be around for any more decent size earthquakes over the ones they’ve been getting in the M4-5 range though!!


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  • VanneV anne

    The US still to this day doesn’t require back cooling to spent fuel pools. Have they learned nothing? No, is the answer. If there was just some way to educate a fool. In this case, an extinction generating fool.


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  • VanneV anne

    And why has the Obama administration approved the engineer who designed Fukushima to design 4 to be built nuclear reactors in the US? Why are failures allowed to keep on failing by our government? Why give a new contract to someone who has currently caused the death of perhaps a billion people or more? Why does the government hate us so much? Why does our government hate its own children so much? Why do they hate the earth so much?


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    • Radio VicFromOregon

      They gotta make buck?


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    • Johnny Blade Johnny Blade

      Thankfully the economy has halted those plans except for one and even that may not fly now with everything going on. I can tell you why Obama is turning on people including children. It’s because his “buddy” who owns Excelion here in IL where I’m surrounded by 11 of these disgusting relics spewing their filth into the air & leaking into the groung via corroded buried pipes has/is pumping huge amounts of money into his re-election campaign war chest and he gets a “heads up” when things get nasty,which is why his family took an unscheduled vacation to South America as did TEPCO’s CEO when the reactors started going belly-up & exploded.When the plumes were coming in & making their way across the N. hemisphere he was with his family south of the Equator which was strange considering they usually went to Hawaii for their little improptu R & R trips!!?? The Bills & legislations that Obama took credit for when he was being groomed for the top job were written by his mentors-the old geezers who had to nominate & back someone with less dirt that could be found than any of the other crooks being indicted,investigated or otherwise had nasty things to be found by the equally despicable would-be dictator competitors party.BTW,I try to be a good person,I believe in God-even though I don’t go to church much aside from funerals although my wife is very active in her church & hopefully makes up for my bad ways(lol)-but the two points being that my wife & I are very offended by what you were put thru earlier & I’m sorry you had to go thru that,and secondly-I have been known to have uncanny “premonitions”-Fuku being just one example,and I’ve had one about Obama now for a long time and lets just say that I think if a successful assasination attempt were carried out in front of millions-he would be back onstage the next day “unharmed”and I mean it exactly as it’s typed without going into it any further,or getting another “manly”response(1 of “Barry’s minion’s).God…


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  • Net

    James Tekton: Thanks for your postings on radiation. The comments are closed, and I am confused because I was hoping West Coast Girl would post her readings. I am on the West Coast but I do not have a geiger counter. :( (sorry this post is off topic)


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