eekuasepinniW Posted March 13, 2011 Share Posted March 13, 2011 http://framework.latimes.com/2011/03/11/earthquake-and-tsunami-hits-japan/ Link to comment Share on other sites More sharing options...
isohume Posted March 13, 2011 Share Posted March 13, 2011 This thread turned out to be alarming. Link to comment Share on other sites More sharing options...
Scott747 Posted March 13, 2011 Share Posted March 13, 2011 Thank god. FYI, NHK says that there was indeed a partial meltdown in reactor #1. I don't think a partial meltdown has really been in dispute. They pretty much acknowledged it earlier this morning with the detection of Cesium outside the plant. Link to comment Share on other sites More sharing options...
famartin Posted March 13, 2011 Share Posted March 13, 2011 I don't think a partial meltdown has really been in dispute. They pretty much acknowledged it earlier this morning with the detection of Cesium outside the plant. While true, this is the first I've heard that it was confirmed by the media. Link to comment Share on other sites More sharing options...
ArtRosen Posted March 13, 2011 Share Posted March 13, 2011 Thank god. FYI, NHK says that there was indeed a partial meltdown in reactor #1. Did you hear that or read that? Link to comment Share on other sites More sharing options...
janetjanet998 Posted March 13, 2011 Share Posted March 13, 2011 While true, this is the first I've heard that it was confirmed by the media. here is how the info is flowing real time(live shots, internet info, PR's from the plant owners, etc) faster then the news media (and their experts) but then the news media is faster then the bureaucratic government. But when the goverment finally confirms something the news media reports it as breaking "new" news we all knew in this thread yesterday the the cesium present meant a meltdown happened Link to comment Share on other sites More sharing options...
Ginx snewx Posted March 13, 2011 Share Posted March 13, 2011 Wow this is turning into the modern Moby Dick, whales revenge. The problems in different reactors multiplying. Pumping seawater on to fuel rods...... Yikes Link to comment Share on other sites More sharing options...
famartin Posted March 13, 2011 Share Posted March 13, 2011 Did you hear that or read that? Heard it on the NHK English feed. http://jibtv.com/program/fullscreen.aspx?page=0 Link to comment Share on other sites More sharing options...
Scott747 Posted March 13, 2011 Share Posted March 13, 2011 While true, this is the first I've heard that it was confirmed by the media. Well there is supposedly a report that NISA said the explosion at the #1 reactor could have only been caused by a meltdown of the core. Nikkei news source ran with it and STRATFOR picked it up. Haven't seen it independently verified and cant find anything directly from NISA. Link to comment Share on other sites More sharing options...
famartin Posted March 13, 2011 Share Posted March 13, 2011 here is how the info is flowing real time(live shots, internet info, PR's from the plant owners, etc) faster then the news media (and their experts) but then the news media is faster then the bureaucratic government. But when the goverment finally confirms something the news media reports it as breaking "new" news we all knew in this thread yesterday the the cerium present meant a meltdown happened Who's this "we" you refer to? Link to comment Share on other sites More sharing options...
Ian Posted March 13, 2011 Share Posted March 13, 2011 Who's this "we" you refer to? definitely not the people who were in full downplay mode yesterday... Link to comment Share on other sites More sharing options...
famartin Posted March 13, 2011 Share Posted March 13, 2011 Well there is supposedly a report that NISA said the explosion at the #1 reactor could have only been caused by a meltdown of the core. Nikkei news source ran with it and STRATFOR picked it up. Haven't seen it independently verified and cant find anything directly from NISA. I think I read in the one of the AP articles that you'd get the hydrogen needed for an explosion if the fuel temp reached 2200 degrees, but a meltdown doesn't start until it reaches 4000 degrees. Link to comment Share on other sites More sharing options...
isohume Posted March 13, 2011 Share Posted March 13, 2011 definitely not the people who were in full downplay mode yesterday... Ugggh...them. Yes, definitely. Link to comment Share on other sites More sharing options...
famartin Posted March 13, 2011 Share Posted March 13, 2011 I think I read in the one of the AP articles that you'd get the hydrogen needed for an explosion if the fuel temp reached 2200 degrees, but a meltdown doesn't start until it reaches 4000 degrees. Here's the quote: "Officials declined to say what the temperature was inside the troubled reactor, Unit 1. At 2,200 degrees Fahrenheit (1,200 degrees Celsius), the zirconium casings of the fuel rods can react with the cooling water and create hydrogen. At 4,000 F (2,200 C), the uranium fuel pellets inside the rods start to melt, the beginning of a meltdown." Link to comment Share on other sites More sharing options...
janetjanet998 Posted March 13, 2011 Share Posted March 13, 2011 Who's this "we" you refer to? I and someone else posted that info(cesium present) sometime late last evening I think..... cesium is a by product of nuclear fission(was pointed out at the time) Link to comment Share on other sites More sharing options...
Ginx snewx Posted March 13, 2011 Share Posted March 13, 2011 It appears that as the level of coolant in the reactor vessel lowered, a portion of the top of the uranium fuel rods was exposed. This may have caused zirconium cladding of the fuel rods to react with water to create hydrogen. This hydrogen was vented, then somehow ignited, causing the explosion. Link to comment Share on other sites More sharing options...
famartin Posted March 13, 2011 Share Posted March 13, 2011 I and someone else posted that info(cesium present) sometime late last evening I think..... cesium is a by product of nuclear fission(was pointed out at the time) Yes, but how does that indicate a meltdown occurred? Link to comment Share on other sites More sharing options...
HoarfrostHubb Posted March 13, 2011 Share Posted March 13, 2011 Wow this is turning into the modern Moby Dick, whales revenge. The problems in different reactors multiplying. Pumping seawater on to fuel rods...... Yikes Couple of questions arise... Does the seawater go back out to the ocean contaminated? How long could they do this for? One of the folks on (I think) Fox News said this pretty much renders the reactor inoperable for the future. Link to comment Share on other sites More sharing options...
Dunkman Posted March 13, 2011 Share Posted March 13, 2011 Yes, but how does that indicate a meltdown occurred? Based on my understanding, the only way for the cesium to have been released was for that casing to melt and thus expose the fuel rod. Link to comment Share on other sites More sharing options...
Coach McGuirk Posted March 13, 2011 Share Posted March 13, 2011 It appears that as the level of coolant in the reactor vessel lowered, a portion of the top of the uranium fuel rods was exposed. This may have caused zirconium cladding of the fuel rods to react with water to create hydrogen. This hydrogen was vented, then somehow ignited, causing the explosion. That doesn't sound very good. Link to comment Share on other sites More sharing options...
Scott747 Posted March 13, 2011 Share Posted March 13, 2011 It appears that as the level of coolant in the reactor vessel lowered, a portion of the top of the uranium fuel rods was exposed. This may have caused zirconium cladding of the fuel rods to react with water to create hydrogen. This hydrogen was vented, then somehow ignited, causing the explosion. The rods were most likely exposed with differing accounts of length and duration. TEPCO even admitted as much, something like 1.5 meters of the 4.5 length of the rods. What you described is what I've read as being one of the likely causes of the explosion. Link to comment Share on other sites More sharing options...
famartin Posted March 13, 2011 Share Posted March 13, 2011 Based on my understanding, the only way for the cesium to have been released was for that casing to melt and thus expose the fuel rod. Ah. OK, that makes sense. Link to comment Share on other sites More sharing options...
Scott747 Posted March 13, 2011 Share Posted March 13, 2011 Now is the time to tune into your favorite Japanese channel... TEPCO says they have started releasing air from the reactor container vessel at Fukushima No. 3 unit Link to comment Share on other sites More sharing options...
Scott747 Posted March 13, 2011 Share Posted March 13, 2011 First closeup of the building housing the reactor. Again keep in mind that the reactor itself is in a secondary enclosure that can't really be seen.... A good diagram giving an idea of what the picture shows. As mentioned you can't quite see the secondary containment system around the reactor/core and why a few folks initially thought the entire reactor had blown up - Link to comment Share on other sites More sharing options...
Coach McGuirk Posted March 13, 2011 Share Posted March 13, 2011 Are those wooden planks currently being constructed or was that the foundation to the second wall? Link to comment Share on other sites More sharing options...
BxEngine Posted March 13, 2011 Share Posted March 13, 2011 Do other power plants have desalination plants within them? Other nuclear power facilities use salt contaminated water, so I'm assuming this is why its considered a hail mary? Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted March 13, 2011 Share Posted March 13, 2011 Are those wooden planks currently being constructed or was that the foundation to the second wall? I think it was the foundation. Link to comment Share on other sites More sharing options...
JoMo Posted March 13, 2011 Share Posted March 13, 2011 Are those wooden planks currently being constructed or was that the foundation to the second wall? it basically 'blew it's top' off. Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted March 13, 2011 Share Posted March 13, 2011 0106: The director general of the UN nuclear watchdog (IAEA), Yukiya Amano, says he hopes the actions taken by the Japanese authorities at the power plant will be successful: "The IAEA was informed by the Japanese authorities that the explosion occurred outside the primary containment vessel at unit one and the integrity of that vessel is confirmed. The IAEA has been informed that sea water with boron is being injected into the vessel as a counter-measure to prevent possible damage to the core. I hope that the sea water will be injected successfully and that the safety of unit one will be established as soon as possible." That doesn't sound good. BBC http://www.bbc.co.uk/news/world-middle-east-12307698 Link to comment Share on other sites More sharing options...
janetjanet998 Posted March 13, 2011 Share Posted March 13, 2011 Yes, but how does that indicate a meltdown occurred? If i remember right because it was detected in the air in gas form I think....under normal confitions it stays in the rods if the rods melted cesium would be in the air Link to comment Share on other sites More sharing options...
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