Japan Earthquake | Page 2809

  • @lillymunster , in analogy to what I wrote about #RCIC weaknesses ( brainmindinst.blogspot.com ), #HPCI pumps are run with turbines driven by reactor steam. The valves controlling the steam, called governors, have a notorious breakdown record. They are fickle and need knowledgable, constant maintenance and adjustment. In the US, the manufacturer had to teach refresher courses on proper maintenance and calibration.
    Improper maintenance could be one source of the vibrations the operator noticed. The other source could be that the quake damaged the piping for the steam fed into the turbines causing fluctuations in steam pressure that the governor overcompensated, perhaps leading up to a resonance catastrophe. That prospect may have frightened the operator. Above is an example of such turbine by Dresser Rand (source www.dresser-rand.com ). i1214.photobucket.com

    by Peter via I1214.photobucket 12/23/2011 2:05:17 PM

  • Early Tepco records on Unit 3 from Mar. 11 ( www.tepco.co.jp ). i1214.photobucket.com

    by Peter via I1214.photobucket 12/23/2011 2:13:33 PM

  • @lillymunster @Peter My understanding for why the HPCI was turned off is not because of pressure problems, but because the temp in RVP can't be brought down too quickly because of embrittlement problems. IIRC, as plants age, they have to lower the threshold temp range. Sorry, I can't cite where I read/heard this. I think it was Gundersen, tho.
    by M.I.A. 12/23/2011 2:44:22 PM

  • From years of listening to my ex- I remembered he talked alot about the MSIV (main steam isolation valve) being a vip actuator of safety systems. From wikipedia: 2.Loss of offsite power (LOOP) 1.During normal operation, the reactor protection system (RPS) is powered by offsite power 1.Loss of offsite power would open all relays in the RPS causing all rapid shutdown signals to come in redundantly.
    2.would also cause MSIV to close since RPS is fail-safe; plant assumes a main steam break is coincident with loss of offsite power.

    en.wikipedia.org I haven't read that much of report, but I wonder if it is brought up?
    by M.I.A. 12/23/2011 2:48:17 PM

  • @M.I.A. , you confuse this with Unit 1. That was the justification to shut down the isolation condenser of Unit 1 right after the quake.
    by Peter 12/23/2011 2:49:13 PM

  • @Peter Ahhh, sorry :)
    by M.I.A. 12/23/2011 2:49:34 PM

  • The MSIVs were closed within seconds after the scrams. The disruption of the main steam loop through the power-generation turbine is the reason why the emergency core cooling system is needed to cool down the decay heat.
    by Peter 12/23/2011 2:52:14 PM

  • The interesting thing I stumbled across touches the Safety Relief Valves on the RPV. At Unit 1 these valves must be actuated manually by the operator. At the other units, they are to open automatically when the RPV pressure rises above a setpoint.
    by Peter 12/23/2011 2:55:49 PM

  • Christchurch earthquake: The moment it struck. Dec 23.2011 VIDEO www.bbc.co.uk
    by MaryW 12/23/2011 3:30:38 PM

  • On of the highest readings I've seen.

    by IanGoddard 12/23/2011 3:35:48 PM

  • "String of quakes rattles New Zealand city of Christchurch" (CNN Wire Staff) edition.cnn.com
    by Pedro Jesus 12/23/2011 3:45:40 PM

  • Reuters Insight: More solar firms set to burn up as prices sink www.reuters.com
    by Peter 12/23/2011 3:52:39 PM

  • Testing continues for a wide range of possible factors that may be responsible for the animals’ condition, including immune system-related diseases, fungi, man-made and bio-toxins, radiation exposure, contaminants, and stressors related to sea ice change.
    www.fakr.noaa.gov
    by MaryW 12/23/2011 4:03:26 PM

  • IN, USA: Sharply reduced numbers of small wildlife, especially birds, observed by hunters
    www.courierpress.com
    Numbers seem to be thinning for rabbits, birds
    Phil Potter

    By Phil Potter
    Posted December 17, 2011 at 11:34 p.m.
    __________________
    "L’amore ai tempi del caos"

    "It is not helpful to hinge the future of the nuclear industry and an important element of the energy supply to a claim that low levels of radiation cause 'negligible' damage or are even helpful." ----Richard Garwin - IBM Emeritus Fellow; Adjunct Prof. of Physics, Columbia University
    (My posts are not intended as advice or professional assessments of any kind.)
    www.flutrackers.com
    by MaryW 12/23/2011 4:09:05 PM

  • CA, USA: Unusual bird deaths near San Diego; carcass disappears before police arrive
    The article focuses on osprey deaths and some are believed to be due to humans killing them, but others are unexplained, including a carcass that disappeared while police were called. The same odd thing is reported in this thread with another species on the other side of the country.

    A severe recent uptick in the unexplained deaths of other bird species is mentioned below, too.

    obrag.org
    Quote:
    Point Loma Peninsula struck by string of Osprey deaths – some suspicious

    by Shane Finneran on December 19, 2011 · 3 comments

    in Environment, Ocean Beach, San Diego
    __________________
    "L’amore ai tempi del caos"

    "It is not helpful to hinge the future of the nuclear industry and an important element of the energy supply to a claim that low levels of radiation cause 'negligible' damage or are even helpful." ----Richard Garwin - IBM Emeritus Fellow; Adjunct Prof. of Physics, Columbia University
    (My posts are not intended as advice or professional assessments of any kind.)
    www.flutrackers.com
    by MaryW 12/23/2011 4:11:00 PM

  • Re: UT, USA: Hundreds of dead blackbirds in Davis County follow unprecedented swarming behavior - government agencies response/involvement is unclear
    Maybe the "thousands" number in the article below is incorrect.

    www.fox13now.com
    Quote:
    Officials unsure of cause of mass death of birds in Davis County
    Brittany Green-Miner, Web Content Producer Fox 13

    4:44 p.m. MST, December 22, 2011
    CLEARFIELD, Utah—

    Wildlife officials and Clearfield city officials are investigating the mysterious death of thousands of starlings in Davis County. State wildlife officials are warning residents to stay away from the dead birds...
    __________________
    "L’amore ai tempi del caos"

    "It is not helpful to hinge the future of the nuclear industry and an important element of the energy supply to a claim that low levels of radiation cause 'negligible' damage or are even helpful." ----Richard Garwin - IBM Emeritus Fellow; Adjunct Prof. of Physics, Columbia University
    (My posts are not intended as advice or professional assessments of any kind.)
    www.flutrackers.com
    by MaryW 12/23/2011 4:16:21 PM

  • I find it very unusual that the 'nuclear/radiation' comment is attached to these posts from the Flu Trackers.com site.
    by MaryW 12/23/2011 4:21:29 PM

  • Organic Problem of Nerve Caused by Radiation. Dec 23.2011. fukushima-diary.com
    by MaryW 12/23/2011 4:24:53 PM

  • NHK: Molten nuclear fuel “could be exposed from the water” at Reactor No. 1 (VIDEO) The most important thing to find out right now is the temperature of the molten fuel and the temperature of the water
    At Reactor No. 1 they believe most of the molten fuel has fallen from the pressure vessel to the bottom of the containment vessel where there is no thermometer
    The amount of water has not been measured accurately with a water gauge and has only been guessed
    Some of the molten fuel could be exposed from the water
    enenews.com
    by MaryW 12/23/2011 4:29:04 PM

  • Constant leakage of Iodine 131
    fukushima-diary.com
    by MaryW 12/23/2011 4:31:31 PM

  • by MaryW 12/23/2011 4:32:32 PM

  • In my opinion, sounds like things are not all that much better than after the nuclear explosions in March.
    by MaryW 12/23/2011 4:34:11 PM

  • "Nigeria oil spill is 'worst in a decade'" www.independent.co.uk
    by Pedro Jesus 12/23/2011 4:37:57 PM

  • ...Dealing with displaced residents is at the top of the government's to-do list. Speaking at a televised news conference Friday, Japanese Prime Minister Yoshihiko Noda said the government will review the evacuation orders ... online.wsj.com
    by MaryW 12/23/2011 4:42:14 PM

  • by MaryW 12/23/2011 4:44:57 PM

  • Indian Citizens Learn to be Cautious About Nuclear Operations After Fukushima. December 23. 2011.
    Villagers living within five km radius of the Kaiga Nuclear Power Project look determined to intensify their agitation demanding their rehabilitation. enformable.com
    by MaryW 12/23/2011 4:55:30 PM

  • Fukushima Nuke Plant Worker Stopped Coolant Injection Over Damage Fears. Dec 24. 2011

    A worker at the tsunami-hit Fukushima No. 1 nuclear station manually stopped a coolant injection system in the plant's No. 3 reactor following the disaster for fear that the reactor would be damaged and lead to a radiation leak, its operator said. mdn.mainichi.jp
    by MaryW 12/23/2011 5:03:11 PM

  • China Three Gorges Corporation buys EDP share

    China Three Gorges bid for 21,35% of Portuguese electric company EDP shares was favoured over German E.ON and Brazilian Eletrobras and Cemig's proposals. The decision has been announced today. Three Gorges will buy 21,35% stake for 2,690 m€. The proposal also includes the possibility for the Chinese company to buy the 4% still held by the Portuguese government, access to EDP's wind power farm shares up to a total 2,000 million euros, a credit line of 2,000 m€ from the Chinese bank CDB with the promise of an additional credit line of the same ammount and the construction of a wind turbine factory in Portugal until the Summer of 2013. The deal, to be concluded early next year, totals well over 8,000 million euros, a new national record.

    Source: economia.publico.pt
    by Pedro Jesus 12/23/2011 5:50:43 PM

  • Government muddle, Tepco missteps cited by Fukushima panel: paper
    The government panel, headed by Yotaro Hatamura, an engineering professor at Tokyo University specializing in the study of things going wrong, includes seismologists, former diplomats and judges.

    It is not the only body investigating responses to the March disaster.

    Dissatisfied with the panel's perceived lack of muscle -- it has not yet summoned Kan or other top officials for questioning -- lawmakers formed a separate panel this month with the authority to summon witnesses to parliamentary sessions.

    A third panel financed by private-sector funds is also looking into topics the government panel may have overlooked.
    www.sun-sentinel.com
    by M.I.A. 12/23/2011 7:45:17 PM

  • Christchurch Jolted by Early Morning 5.1 Shake. Dec 24.2011 Christchurch's horror start to the Christmas period has continued this morning, with a jolt measuring 5.1 recorded at 6.37am by GNS.

    It comes after an uneasy night for Christchurch residents, with GNS reporting a series of shakes measuring above 4.

    Three shakes measuring between 4.0 and 4.3 struck within a 30 minute period just before midnight.

    A further four jolts above 4 occurred through the night, the most recent just before 6am.

    In addition there were nine quakes measuring between 3 and 3.9 overnight. tvnz.co.nz
    by MaryW 12/23/2011 7:48:15 PM

  • Mainichi: Gov’t claim of cold shutdown conditions is “meaningless” — Like when Japan Army’s retreat in WWII called a ‘shift in position’ enenews.com
    by MaryW 12/23/2011 7:58:05 PM

  • New video of tsunami from police helicopter. Released on Dec 7. video.mainichi.co.jp
    by M.I.A. 12/23/2011 7:59:59 PM

  • Totally OFF topic but important info for Moms and babies. Re: Enfamil Infant Formula- FDA, CDC step in after baby's death raises questions about formula
    More retailers pull formula after Missouri infant death



    Updated: Dec 23, 2011 11:29 AM CST

    COLUMBIA, MO(AP) - Several more national retailers have joined Wal-Mart Stores Inc. in pulling a batch of powdered infant formula from their shelves after a Missouri newborn who consumed it apparently died of a rare bacterial infection.

    Officials at Supervalu Inc., Walgreen Co., Kroger Co. and Safeway said Friday they have removed cans of Enfamil Newborn with the lot number ZP1K7G from various stores across the country. They say it's a precaution until health officials complete tests on the formula.

    More...
    www.kait8.com
    __________________

    by MaryW 12/23/2011 8:22:59 PM

  • Enfamil Infant Formula below not working. Use this one: www.flutrackers.com
    by MaryW 12/23/2011 8:24:47 PM

  • Rumor for the Day, blogger posted: "Thanks to plume drift from Fukushima leak, there are now more than 1,200 red-nosed reindeer in the North Pole."
    by MaryW 12/23/2011 8:33:13 PM

  • Have a Very Merry Christmas Everyone!

    by MaryW 12/23/2011 8:46:51 PM

  • @MaryW LOL on the reindeer! And a very Merry Christmas to you and yours, Mary :)
    by M.I.A. 12/23/2011 10:40:31 PM

  • @MaryW Sure lots of problems with baby formula lately...
    by lillymunster 12/23/2011 10:54:11 PM

  • well, saturday right now. merry christmas from berlin ! :)
    by Edano 12/23/2011 11:00:09 PM

  • @Edano Merry Christmas didn't realize how late it was. Just got back from shopping hell. :-)
    by lillymunster 12/23/2011 11:00:52 PM

  • @lillymunster same here, only some hours before :) i did nearly everything online this year. everything but food... now wrapping parcels.
    by Edano 12/23/2011 11:03:00 PM

  • @Edano I did most of mine online also. Had to get food and a few things. It was total madness by afternoon.
    by lillymunster 12/23/2011 11:15:23 PM

  • JT: #Japan govt trying to avoid payouts to #nuclear victims further from catastrophe
    -this is horrible

    tinyurl.com
    by lillymunster 12/23/2011 11:36:04 PM

  • Proof that some people in the US will riot over anything. seattle.cbslocal.com
    by lillymunster 12/23/2011 11:38:57 PM

  • Godaddy has backed off of SOPA support. If SOPA passes I will probably move all hosting and domain names to Switzerland. :-) news.cnet.com
    by lillymunster 12/24/2011 12:07:04 AM

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