JoMo Posted March 12, 2011 Share Posted March 12, 2011 Kyodo: BREAKING NEWS: Serious damage unlikely to reactor container: safety agency Link to comment Share on other sites More sharing options...
Kevin Askew Posted March 12, 2011 Share Posted March 12, 2011 http://www.surf-forecast.com/maps/Japan/wind/12 Surface winds only here in this map and forecast for coming days... Link to comment Share on other sites More sharing options...
PottercountyWXobserver Posted March 12, 2011 Share Posted March 12, 2011 Kyodo: BREAKING NEWS: Serious damage unlikely to reactor container: safety agency thank goodness, finally some good news out of such dispair. Hopefully they can contain it Link to comment Share on other sites More sharing options...
B-Rent Posted March 12, 2011 Share Posted March 12, 2011 Kyodo: BREAKING NEWS: Serious damage unlikely to reactor container: safety agency Conspiracy theorists and disbelivers in 3...2...1... Link to comment Share on other sites More sharing options...
JoMo Posted March 12, 2011 Share Posted March 12, 2011 thank goodness, finally some good news out of such dispair. Hopefully they can contain it yeah, but I don't know if they have actually been there to inspect it or if they are just saying that to not panic people. I mean, the roof did not 'collapse' it was blown off. Reuters just reported this: Communications director at the World Nuclear Association, Ian Hore-Lacy, says he believes the blast at the power plant was due to hydrogen igniting, and that it may not necessarily have caused radiation leakage, and adds that if the hydrogen has ignited, then it is gone, and doesn't pose any further threat. Link to comment Share on other sites More sharing options...
Kevin Askew Posted March 12, 2011 Share Posted March 12, 2011 Lets hope and Pray this is the case. Makes me ill to stomache to watch this head the way it was.. Link to comment Share on other sites More sharing options...
B-Rent Posted March 12, 2011 Share Posted March 12, 2011 1045: BBC environment correspondent Roger Harrabin says local officials believe the release of radiation following the nuclear plant explosion is likely to be small. He adds that nuclear incidents aren't always as serious as they may sound or appear, and actually, in terms of loss of life and destruction, accidents at hydroelectric plants are far more dangerous. Link to comment Share on other sites More sharing options...
Bozart Posted March 12, 2011 Share Posted March 12, 2011 Kyodo: BREAKING NEWS: Serious damage unlikely to reactor container: safety agency But what about cooling capacity? Link to comment Share on other sites More sharing options...
Scott747 Posted March 12, 2011 Share Posted March 12, 2011 Japan's nuclear safety agency officials said Saturday they believe there has been no serious damage to the container of the troubled No. 1 reactor of the Fukushima No. 1 nuclear power plant. The officials made the comment after examining the latest radiation data monitored around the facility after an explosion in the afternoon, they said. Link to comment Share on other sites More sharing options...
Scott747 Posted March 12, 2011 Share Posted March 12, 2011 What we may not be able to see is a secondary shell... Have seen a schematic so I'm just reaching for positives. http://www.reuters.c...E72B1BP20110312 "Despite the damage to the outer structure, as long as that steel inner vessel remains intact, then the vast majority of the radiation will be contained. "If the pressure vessel, which is the thing that actually holds all the nuclear fuel ... if that was to explode -- that's basically what happened at Chernobyl -- you get an enormous release of radioactive material. "It doesn't look from the television pictures ... as though it's the vessel itself. Link to comment Share on other sites More sharing options...
B-Rent Posted March 12, 2011 Share Posted March 12, 2011 http://www.reuters.c...E72B1BP20110312 "Despite the damage to the outer structure, as long as that steel inner vessel remains intact, then the vast majority of the radiation will be contained. "If the pressure vessel, which is the thing that actually holds all the nuclear fuel ... if that was to explode -- that's basically what happened at Chernobyl -- you get an enormous release of radioactive material. "It doesn't look from the television pictures ... as though it's the vessel itself. Thats what we have been saying all night long. Thank you. Link to comment Share on other sites More sharing options...
Scott747 Posted March 12, 2011 Share Posted March 12, 2011 This doesn't necessarily mean the worst case scenario... Nuclear and Industrial Safety Agency now believe #meltdown has occurred at Fukushima Daiichi No. 1 plant #japan #quake Link to comment Share on other sites More sharing options...
capecod04 Posted March 12, 2011 Share Posted March 12, 2011 This doesn't necessarily mean the worst case scenario... Nuclear and Industrial Safety Agency now believe #meltdown has occurred at Fukushima Daiichi No. 1 plant #japan #quake Sure as hell doesn't help matters that's for sure Link to comment Share on other sites More sharing options...
kwt Posted March 12, 2011 Share Posted March 12, 2011 Looks like something between the best case and worst case has happened, thankfully it seems at this early stage things are going to be generally ok... Its yet again another wait and see job. Link to comment Share on other sites More sharing options...
Scott747 Posted March 12, 2011 Share Posted March 12, 2011 PM is addressing the nation at the bottom of the hour. Link to comment Share on other sites More sharing options...
CoastalWx Posted March 12, 2011 Share Posted March 12, 2011 Was it the build up of steam pressure that caused the explosion?? I didn't see the cause, but I assume that might be the case. Link to comment Share on other sites More sharing options...
OSUmetstud Posted March 12, 2011 Share Posted March 12, 2011 Was it the build up of steam pressure that caused the explosion?? I didn't see the cause, but I assume that might be the case. It makes more sense to me than hydrogen. Why would a hydrogen explosion occur in the outer building but not the inner vessel? Link to comment Share on other sites More sharing options...
shaggy Posted March 12, 2011 Share Posted March 12, 2011 It makes more sense to me than hydrogen. Why would a hydrogen explosion occur in the outer building but not the inner vessel? Makes sense also because of the lack of flames. Hydrogen would have had a fireball I assume. I remember watching the mythbusters and they overheated a hot water heater and the steam explosion from that was tremendous for such a small amount of steam. Link to comment Share on other sites More sharing options...
OSUmetstud Posted March 12, 2011 Share Posted March 12, 2011 Makes sense also because of the lack of flames. Hydrogen would have had a fireball I assume. I remember watching the mythbusters and they overheated a hot water heater and the steam explosion from that was tremendous for such a small amount of steam. I actually watched the video again and you can see just a bit of orange flame as the building blows. Link to comment Share on other sites More sharing options...
shaggy Posted March 12, 2011 Share Posted March 12, 2011 I actually watched the video again and you can see just a bit of orange flame as the building blows. I've been up since 9am yesterday morning and my eyes just can't see the orange. I see the shockwave but thats all I can see. Link to comment Share on other sites More sharing options...
Ginx snewx Posted March 12, 2011 Share Posted March 12, 2011 I actually watched the video again and you can see just a bit of orange flame as the building blows. When I worked at Pfizer we had a over pressurization of hydrogen cylinders which resulted in auto venting of the vessels, the fireballs in the sky were very large and impressive. A hydrogen explosion would have lit up the sky. Intriguing to me what actually blew up. Link to comment Share on other sites More sharing options...
thunderbolt Posted March 12, 2011 Share Posted March 12, 2011 Per fox news Japan officials to hand out iodine. Link to comment Share on other sites More sharing options...
Ed Lizard Posted March 12, 2011 Author Share Posted March 12, 2011 It makes more sense to me than hydrogen. Why would a hydrogen explosion occur in the outer building but not the inner vessel? TMI had a hydrogen bubble build up. It didn't explode because there was insufficient oxygen. But it caused great concern. An outer building with more oxygen could be an explanation. I ran a naval nuclear reactor for four years before college, no commercial reactor experience, and I don't really have a clue what is happening now, except it looks scary. I posted this link about 10 pages back... http://www.nrc.gov/reading-rm/doc-collections/fact-sheets/3mile-isle.html Link to comment Share on other sites More sharing options...
OSUmetstud Posted March 12, 2011 Share Posted March 12, 2011 TMI had a hydrogen bubble build up. It didn't explode because there was insufficient oxygen. But it caused great concern. An outer building with more oxygen could be an explanation. I ran a naval nuclear reactor for four years before college, no commercial reactor experience, and I don't really have a clue what is happening now, except it looks scary. I posted this link about 10 pages back... http://www.nrc.gov/r...3mile-isle.html A worked at Nine Mile Point as an assistant to the meteorologist for a few months in college and I've read a lot on the chernoyble disaster...but I don't really know either. Maybe Spartalifer (forgot his name now) can shed some light. Link to comment Share on other sites More sharing options...
OSUmetstud Posted March 12, 2011 Share Posted March 12, 2011 Link to comment Share on other sites More sharing options...
Ed Lizard Posted March 12, 2011 Author Share Posted March 12, 2011 I sure hope that 750 rads into the US map was MS Paint, IIRC 750 rad is above the LD50. Link to comment Share on other sites More sharing options...
OSUmetstud Posted March 12, 2011 Share Posted March 12, 2011 I sure hope that 750 rads into the US map was MS Paint, IIRC 750 rad is above the LD50. it's nonsense. Link to comment Share on other sites More sharing options...
OSUmetstud Posted March 12, 2011 Share Posted March 12, 2011 An explosion at an earthquake-damaged nuclear plant was not caused by damage to the nuclear reactor but by a pumping system that failed as crews tried to bring the reactor's temperature down, Chief Cabinet Secretary Yukio Edano said Saturday. The next step for workers at the Fukushima Daiichi plant will be to flood the reactor containment structure with sea water to bring the reactor's temperature down to safe levels, he said. The effort is expected to take two days. Radiation levels have fallen since the explosion and there is no immediate danger, Edano said. But authorities were nevertheless expanding the evacuation to include a radius of 20 kilometers (about 12.5 miles) around the plant. The evacuation previously reached out to 10 kilometers.http://www.cnn.com/2011/WORLD/asiapcf/03/12/japan.nuclear/index.html?hpt=T1&iref=BN1 Link to comment Share on other sites More sharing options...
RU848789 Posted March 12, 2011 Share Posted March 12, 2011 The video certainly looked like a hydrogen fireball. The fireball was short-lived, barely visible and appeared to be moving upwards at a high velocity, all of which are characteristics of hydrogen fires. With regard to the vertical velocity, hydrogen is the lightest gas at 2 g/mole, vs. air which is 79% nitrogen (N2), at 28 g/mole, and 21% oxygen (O2), at 32 g/mole; hence hydrogen is far less dense than air, so it rises very rapidly when released - even faster than helium, which is 4 g/mole of gas. Here is a link to characteristics of hydrogen fires/flames. http://www.hysafe.org/science/eAcademy/docs/1stesshs/presentations/hyfire1.pdf Link to comment Share on other sites More sharing options...
SuperNET Posted March 12, 2011 Share Posted March 12, 2011 Of 90 people from within the 10km exclusion zone around Fukushima nuclear power plant tested, three have given positive results for radiation exposure, says Japanese public broadcaster NHK. That's just over three per cent. Some 45,000 people who live within the 10km radius were told to evacuate their homes in the early hours of this morning, when pressure inside reactors was building rapidly. Link to comment Share on other sites More sharing options...
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