Japan Earthquake | Page 2728

  • Hmm sodium, there are obviously salt deposits in that mess from the sea water. Boron burns green! wiki.answers.com
    by lillymunster 12/1/2011 5:23:22 PM

  • Tracks well, eh?
    by M.I.A. 12/1/2011 5:24:23 PM

  • The pressing question is, as Bo mentioned, if they need to burn off gasses- why?
    by M.I.A. 12/1/2011 5:25:16 PM

  • Yes that is the um "burning" question. :-) Would burning off hydrogen in some controlled way then remove some of it from the reactor? They have been upping and upping the nitrogen and then lowered watering. THey keep doing actions to combat hydrogen
    by lillymunster 12/1/2011 5:28:20 PM

  • My plug in crashed and can't see TBS cam is the fire still about the same?
    by lillymunster 12/1/2011 5:28:57 PM

  • Yes, it's still going. Just thinking out loud here, but if you're injecting nitrogen to PURGE out hydrogen, and your vent stacks and pipes are damaged, where does it go?
    by M.I.A. 12/1/2011 5:32:43 PM

  • Sure don't want it to find its own way, the way it did in the explosions
    by M.I.A. 12/1/2011 5:33:29 PM

  • @M.I.A. TEPCO recently added new nitrogen injection locations? Maybe they are using the old injection points as ejection?
    by lillymunster 12/1/2011 5:38:46 PM

  • www.tepco.co.jp new injection points.
    by lillymunster 12/1/2011 5:39:11 PM

  • They added nitrogen injection to both the rpv and pcv at 1-3 so again upping the ante in the hydrogen battle.
    by lillymunster 12/1/2011 5:41:37 PM

  • Published the speculation ideas on the fire. Please tweet, maybe people will share new info they find.
    by lillymunster 12/1/2011 5:45:25 PM

  • Okey dokey.
    by M.I.A. 12/1/2011 5:46:17 PM

  • Flame color matches hydrogen class, once you discounts camera adjusted night exposition compared with this Gundersen's video (3'10'').
    by estacion 12/1/2011 5:47:45 PM

  • by estacion 12/1/2011 5:48:12 PM

  • @estacion very interesting video!
    by lillymunster 12/1/2011 6:00:39 PM

  • Added Gundersen's video to the article. Notice how the flame on his soda bottle has that slightly oscillating but constant flame to it. Looks like the TBS video
    by lillymunster 12/1/2011 6:04:16 PM

  • Kyodo
    TEPCO study shows water level in spent fuel pool was dangerously low
    TOKYO, Dec. 2, Kyodo

    A study by Tokyo Electric Power Co., operator of the crippled Fukushima Daiichi nuclear power plant, has shown that water in the No. 4 unit's spent fuel pool temporarily dropped to a level close to exposing the stored nuclear fuel, sources close to the matter said Thursday.

    After the No. 4 unit lost its key cooling functions along with the plant's other reactors in the wake of the March 11 earthquake and tsunami, the water level in the No. 4 spent fuel pool fell at one point to only 1.5 meters above the top of the fuel assemblies, as heat from the fuel had caused the coolant to evaporate. The water level is usually around 7 meters above the assemblies.

    The water level remained low for over a month until at least April 20. Workers injected around 930 tons of water into the spent fuel pool between April 22 and 27, filling up the pool, but a graph compiled by Tokyo Electric shows that the fuel would have been exposed in early May if water had not been injected.

    While nuclear fuel inside a reactor is enclosed by multiple barriers so that radioactive substances do not leak outside, a spent fuel pool is only separated from the external environment by the wall of the reactor building.

    Exposure of nuclear fuel is dangerous because it could eventually melt and release radioactive substances into the environment. As the wall of the No. 4 reactor building was damaged in a hydrogen explosion, an extremely dangerous situation could have occurred.

    The utility known as TEPCO plans to include the outcome of its assessment in a midterm report on its in-house investigation into the world's worst nuclear accident in 25 years at the plant in Fukushima Prefecture. The report is set to be announced Friday.

    The study also showed that the water levels in the spent fuel pools of the Nos. 1 to 3 units also dropped, but not significantly.

    The heat from fuel in the No. 4 spent fuel pool was greater than in the other units because all of the fuel from the No. 4 reactor, halted for a regular inspection before the quake, was stored in the pool. The temperature of the water in the No. 4 spent fuel pool, usually kept at around 30 C, rose to about 90 C after the nuclear crisis erupted.
    by lillymunster 12/1/2011 6:05:06 PM

  • Study shows worse picture of Fuku www.nytimes.com
    by lillymunster 12/1/2011 6:05:50 PM

  • e
    nenews has a video of 'fire' light enenews.com
    by MaryW 12/1/2011 6:11:07 PM

  • The oscillation of the flame could be due to wind at the plant?
    by lillymunster 12/1/2011 6:13:40 PM

  • We may get more data later today it is wee hours of the morning in Japan right now.
    by lillymunster 12/1/2011 6:15:50 PM

  • Lucas Hixxon is tweeting he thinks hydrogen burn too
    by lillymunster 12/1/2011 6:42:44 PM

  • The "fire" is now going on 3 hours unchanged.
    by lillymunster 12/1/2011 6:51:30 PM

  • @lillymunster If this link does not work for me, when you get time, the link is on a comment posted Dec 1, on Enenews' article entitled 'NYT Experts-Danger of a wider radiation leak...' by 'whoopie' . The post starts out with 'I think the NRC is really sweating it!...Read it all here. It will blow your mind: link pbadupws.nrc.gov
    by MaryW 12/1/2011 6:59:09 PM

  • Link looks like its working...it a very slow load...be patient:)
    by MaryW 12/1/2011 7:00:11 PM

  • hydrogen "burns" without steam. the fire could be nearer to the tbs cam than the plants, that's why it cannot be seen on teppycam. tbs cam is veeeeery far away. it could be a fire in the forest.
    by Edano 12/1/2011 7:13:09 PM

  • @Edano a fire in the forest would have moved or spread over 3 hours. or burned itself out
    by lillymunster 12/1/2011 7:14:44 PM

  • @lillymunster i did not mean a wild fire, sorry. :)
    by Edano 12/1/2011 7:15:31 PM

  • just wanted to say it must not be in the same distance as the plants. tbs cam is some (30 or 50?) km away.
    by Edano 12/1/2011 7:17:06 PM

  • Live TBS cam looks very very bad www.youtube.com
    by deb 12/1/2011 7:40:15 PM

  • by deb via Tsunamioftears 12/1/2011 7:42:30 PM

  • @Edano it is to the right of both the reactor buildings and the vent towers when you look on TEPCO live cam. You can see the yellow reflection on the tower sometimes.
    by lillymunster 12/1/2011 7:50:01 PM

  • NEW NHK:
    TEPCO, the Fukushima Daiichi Nuclear Power Station, in order to prevent a new explosion of hydrogen, inert gas, nitrogen is inserted directly into the reactor, reducing the concentration of hydrogen started working.
    Unit 2 nuclear power plant in Fukushima Daiichi, began late October, in the work to remove the radioactive material containment extract the gas, if accumulated some explosive hydrogen concentrations up to 2.9 I found that it is in%. TEPCO For this reason, I have been injecting nitrogen into the containment vessel so far, the work place to reduce the concentration of hydrogen in nitrogen directly inside the reactor, and on day 1 and Unit 3 from Unit 1 I started with. The concentration of hydrogen accumulated in the reactor containment and is seen is that it has less than 4% explosion, TEPCO, by putting nitrogen into the reactor, the hydrogen concentration is extruded You are decreases. TEPCO made the country and in the process table for the convergence of the accident, which aims to achieve this year "Step 2", the essential conditions for low hydrogen concentrations, the country's Nuclear and Industrial Safety Agency has to be evaluated for management of TEPCO hydrogen.
    www3.nhk.or.jp
    by lillymunster 12/1/2011 7:52:18 PM

  • Will see if OB_Li is still around and can double check the machine trans.
    by lillymunster 12/1/2011 7:53:10 PM

  • Reactor idled at Kyushu Electric's Genkai nuclear plant for checks

    SAGA, Japan, Dec. 1, Kyodo

    Kyushu Electric Power Co. idled the No. 1 reactor at its nuclear power plant in Genkai, Saga Prefecture, on Thursday for regular checks, leaving nine of the nation's 54 commercial reactors in operation.

    Thursday's move also left only one reactor in operation on the southwestern Japan island of Kyushu. That reactor, the No. 4 unit at the Genkai plant, is also scheduled to go offline on Dec. 25 for similar checks.

    The utility has already begun first-stage work to assess the safety of the No. 1 reactor, a prerequisite for its restart after the checks are complete. But the safety of the reactor has been called into question because it began operation more than 35 years ago.

    The four other reactors owned by the utility -- the Nos. 2 and 3 reactors at the Genkai plant and the Nos. 1 and 2 reactors at the Sendai nuclear power plant in Satsumasendai, Kagoshima Prefecture -- are already offline for regular checks.

    The utility will ask customers to reduce their maximum power usage by more than 5 percent between Dec. 26 and Feb. 3.

    ==Kyodo english.kyodonews.jp
    by Edano 12/1/2011 7:57:28 PM

  • Test eyed near Fukushima plant in Jan. for tainted debris cleanup

    FUKUSHIMA, Japan, Dec. 1, Kyodo

    A government-sponsored test is likely to be held within a no-go zone around the crippled Fukushima Daiichi Nuclear Power Station in January to see if radioactive debris can be cleaned with water, sources close to the matter said Thursday.

    The envisaged test is part of efforts by the Japan Atomic Energy Agency, a government-funded research organization, to seek ways to decontaminate rubble that came into contact with radioactive materials due to the nuclear disaster.

    Construction company Toda Corp. will conduct the test at a small plant to be built within the 20-kilometer evacuation zone from the power station. Data obtained from the test will be used for future rubble decontamination.

    The Environment Ministry estimates about 500,000 tons of debris caused by the March earthquake and tsunami lie within the no-go zone and surrounding areas where some residents were told to evacuate.

    It has become an urgent task to develop technology aimed at reducing radiation levels and the amount of rubble there because work to build rubble disposal facilities has been slow.

    The plant will be developed by Toda, which boasts know-how in soil decontamination, in a joint project with another Japanese company.

    ''We'd like to gather more precise data by using pieces of wood and concrete debris left in the zone than just using those dirtied intentionally for testing purposes,'' a person involved in the envisaged test said.

    ==Kyodo english.kyodonews.jp
    by Edano 12/1/2011 7:58:43 PM

  • Check TBS the flickering has changed to a slow pulsing glow. I wonder if the wind died down?
    by lillymunster 12/1/2011 8:02:01 PM

  • Wind Map around Fukushima Daiichi Nuclear Power Plant: agora.ex.nii.ac.jp
    by Majj 12/1/2011 8:05:09 PM

  • Ob_Li's clarification of the NHK article: "They've been working on gas extraction from reactor #2, as the hydrogen level was 2.9% when highest, was highly explosive ."
    by lillymunster 12/1/2011 8:09:44 PM

  • Is there any other way to safely extract hydrogen other than to contain it or burn it?
    by lillymunster 12/1/2011 8:10:03 PM

  • @Majj It looks like the wind has died down a little
    in the area over the last 6-1 hours.
    by lillymunster 12/1/2011 8:12:00 PM

  • No news on TEPCO English site, 5 hours before the next plant status is released.
    by lillymunster 12/1/2011 8:16:29 PM

  • @lillymunster did you check out NRC emails for March 11- what a bunch of bozos
    by MaryW 12/1/2011 8:17:46 PM

  • @MaryW I have looked at many of them for March 11 when we pulled all the FOIA documents. They were almost as in the dark as we were, in some ways more than we were.
    by lillymunster 12/1/2011 8:19:13 PM

  • To relie on news media reports as their source-amazing!
    by MaryW 12/1/2011 8:32:16 PM

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