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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Fukushima #3 Using Plutonium Fuel?
According to this article, the recently exploded reator number 3 at Fukushima was using "mox" as a fuel. QUOTE: "Last year, unit 3 began using some reprocessed fuel known as "mox," a mixture of plutonium oxide and uranium oxide, produced from recycled material from nuclear weapons as part of a program known as "from megatons to megawatts." UNQUOTE http://www.dispatch.com/live/content...g.html?sid=101 This raises the stakes substantially if the core has been breached. Plutonium is poisonous as all hell in addition to its high radioavtivity and incredibly long half life. Dave |
#3
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Fukushima #3 Using Plutonium Fuel?
On Mon, 14 Mar 2011 11:59:22 -0700, Jim Stewart
wrote: wrote: According to this article, the recently exploded reator number 3 at Fukushima was using "mox" as a fuel. QUOTE: "Last year, unit 3 began using some reprocessed fuel known as "mox," a mixture of plutonium oxide and uranium oxide, produced from recycled material from nuclear weapons as part of a program known as "from megatons to megawatts." UNQUOTE http://www.dispatch.com/live/content...g.html?sid=101 This raises the stakes substantially if the core has been breached. Plutonium is poisonous as all hell in addition to its high radioavtivity and incredibly long half life. *all* nuclear power reactors end up converting some amount of their fuel to plutonium. The percentage depends on how long the fuel has been in the reactor. Apparently, from what I am hearing, three of the reactors at Fukushima were shut down for refueling.....so that would be good news if that is a factual condition. I heard this is from an "expert" guest on a internet radio show....so I still need to do some checking. Regards the plutonium: even as the process converts some amount of its fuel to plutonium, using plutonium on the front end as initial fuel vastly increases the total amount of plutonium available to create a poisonous mess if the containment vessel has been breached. The explosion at Fukushima #3 looks, to me, like it blew the cement containment cap over the reactor vessel into the sky. From the videos available it looks to be falling back to Earth to the left in the videos. This cap is removable by a large trolley crane during the refueling process. It is massive and would require a HUGE explosive force to cast as far into the sky as it appears to fly. That would indicate a reactor vessel breach and a resultant steam explosion as the seawater they have pumped into the containment vessel around the reactor superheated. I do not believe the Japanese government's story of a hydrogen explosion. They would have been able to vent much of the hydrogen before such a massive explosion occurred.....assuming they have at least some fundamental control over any systems whatsoever at the facility. Dave |
#4
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Fukushima #3 Using Plutonium Fuel?
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#5
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Fukushima #3 Using Plutonium Fuel?
That would indicate a reactor vessel breach and a resultant steam
explosion as the seawater they have pumped into the containment vessel around the reactor superheated. I do not believe the Japanese government's story of a hydrogen explosion. They would have been able to vent much of the hydrogen before such a massive explosion occurred.....assuming they have at least some fundamental control over any systems whatsoever at the facility. Dave Interesting assessment, Dave. Ending with an implied question of do they have control of anything? Actually, I was wondering what the motivation for misleading the world would be at this point. I mean, if you're hurt that badly, screaming for help seems to be the best option, not denying the injury ala the Black Knight... ("It's merely a fleshwound" guy from Monty Python's... Oh never mind. If you didn't know it, that won't help either.) -- Regards, Joe Agro, Jr. (800) 871-5022 01.908.542.0244 Automatic / Pneumatic Drills: http://www.AutoDrill.com Multiple Spindle Drills: http://www.Multi-Drill.com Production Tapping: http://Production-Tapping-Equipment.com/ Flagship Site: http://www.Drill-N-Tap.com VIDEOS: http://www.youtube.com/user/AutoDrill TWITTER: http://twitter.com/AutoDrill FACEBOOK: http://www.facebook.com/AutoDrill V8013-R |
#6
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Fukushima #3 Using Plutonium Fuel?
On Mon, 14 Mar 2011 15:15:14 -0500, CaveLamb
wrote: wrote: That would indicate a reactor vessel breach and a resultant steam explosion as the seawater they have pumped into the containment vessel around the reactor superheated. I do not believe the Japanese government's story of a hydrogen explosion. They would have been able to vent much of the hydrogen before such a massive explosion occurred.....assuming they have at least some fundamental control over any systems whatsoever at the facility. Dave Interesting assessment, Dave. Ending with an implied question of do they have control of anything? You can see the layout, including the cement containment cap in question he http://i1107.photobucket.com/albums/...orDesign_3.jpg I suppose it's possible that the cap blew off without an actual breach (meltdown) of the reactor vessel. It's possible the seawater inside the containment vessel became superheated steam without a reactor vessel breach, but I would think that would happen at a semi slow rate and pressure could have been gradually vented by the control systems. The fact that it violently blew indicates a reactor vessel breach to me....but I could be wrong of course. Dave |
#7
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Fukushima #3 Using Plutonium Fuel?
On Mon, 14 Mar 2011 16:39:54 -0400, "Joe AutoDrill"
wrote: That would indicate a reactor vessel breach and a resultant steam explosion as the seawater they have pumped into the containment vessel around the reactor superheated. I do not believe the Japanese government's story of a hydrogen explosion. They would have been able to vent much of the hydrogen before such a massive explosion occurred.....assuming they have at least some fundamental control over any systems whatsoever at the facility. Dave Interesting assessment, Dave. Ending with an implied question of do they have control of anything? Actually, I was wondering what the motivation for misleading the world would be at this point. I mean, if you're hurt that badly, screaming for help seems to be the best option, not denying the injury ala the Black Knight... ("It's merely a fleshwound" guy from Monty Python's... Oh never mind. If you didn't know it, that won't help either.) That is an interesting question. I worked for a Japanese auto parts supplier for a couple of years. If you can devise the workings of the Asiatic mind, please illuminate me. After close working with these people, I still find it to be a mystery. They seem to make a policy decision, and then right or wrong, stick tenaciously to it to the bitter end. Banzai style. Unless you've seen it up close, as a Western individual, you will not even be aware that this mode of thinking even exists. It involves a concept called "face". Loss of face is a huge thing in Japanese society. If you loss sufficient face, you must kill yourself. Obviously, the nuke plant operators must maintain face. It is a matter of life and death to them. Right or wrong, they will attempt to maintain "face". Does this make sense from a Western perspective? No.....but....they're Japanese. You cannot possibly fathom that from a Western perspective. Dave |
#8
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Fukushima #3 Using Plutonium Fuel?
On 2011-03-14, lid wrote:
On Mon, 14 Mar 2011 11:59:22 -0700, Jim Stewart wrote: wrote: According to this article, the recently exploded reator number 3 at Fukushima was using "mox" as a fuel. QUOTE: "Last year, unit 3 began using some reprocessed fuel known as "mox," a mixture of plutonium oxide and uranium oxide, produced from recycled material from nuclear weapons as part of a program known as "from megatons to megawatts." UNQUOTE http://www.dispatch.com/live/content...g.html?sid=101 This raises the stakes substantially if the core has been breached. Plutonium is poisonous as all hell in addition to its high radioavtivity and incredibly long half life. *all* nuclear power reactors end up converting some amount of their fuel to plutonium. The percentage depends on how long the fuel has been in the reactor. Apparently, from what I am hearing, three of the reactors at Fukushima were shut down for refueling.....so that would be good news if that is a factual condition. I heard this is from an "expert" guest on a internet radio show....so I still need to do some checking. Regards the plutonium: even as the process converts some amount of its fuel to plutonium, using plutonium on the front end as initial fuel vastly increases the total amount of plutonium available to create a poisonous mess if the containment vessel has been breached. The explosion at Fukushima #3 looks, to me, like it blew the cement containment cap over the reactor vessel into the sky. From the videos available it looks to be falling back to Earth to the left in the videos. This cap is removable by a large trolley crane during the refueling process. It is massive and would require a HUGE explosive force to cast as far into the sky as it appears to fly. That would indicate a reactor vessel breach and a resultant steam explosion as the seawater they have pumped into the containment vessel around the reactor superheated. I do not believe the Japanese government's story of a hydrogen explosion. They would have been able to vent much of the hydrogen before such a massive explosion occurred.....assuming they have at least some fundamental control over any systems whatsoever at the facility. Dave Even if the vessel did not breach -- they may not even know -- the piping surely did. i |
#9
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Fukushima #3 Using Plutonium Fuel?
On 2011-03-14, Joe AutoDrill wrote:
That would indicate a reactor vessel breach and a resultant steam explosion as the seawater they have pumped into the containment vessel around the reactor superheated. I do not believe the Japanese government's story of a hydrogen explosion. They would have been able to vent much of the hydrogen before such a massive explosion occurred.....assuming they have at least some fundamental control over any systems whatsoever at the facility. Dave Interesting assessment, Dave. Ending with an implied question of do they have control of anything? Actually, I was wondering what the motivation for misleading the world would be at this point. I mean, if you're hurt that badly, screaming for help seems to be the best option, not denying the injury ala the Black Knight... ("It's merely a fleshwound" guy from Monty Python's... Oh never mind. If you didn't know it, that won't help either.) "Panic prevention", plus everything that J. Carroll said i |
#10
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Fukushima #3 Using Plutonium Fuel?
On Mon, 14 Mar 2011 16:47:16 -0500, Ignoramus1540
wrote: On 2011-03-14, lid wrote: That would indicate a reactor vessel breach and a resultant steam explosion as the seawater they have pumped into the containment vessel around the reactor superheated. I do not believe the Japanese government's story of a hydrogen explosion. They would have been able to vent much of the hydrogen before such a massive explosion occurred.....assuming they have at least some fundamental control over any systems whatsoever at the facility. Dave Even if the vessel did not breach -- they may not even know -- the piping surely did. i I would certainly concur. That explosion was MASSIVE. What is killing me about this whole thing is this: Who designed this facility to have the emergency diesel back-up generators staged at an elevation level where operating them would suck in water, and cause them to immediately fail, in a KNOWN tsunami environment? These generators should have been located on a man made earthen/cement works 80 feet or so above ground level. The quake occurred, caused the control rods to drop, emergency power kicked on via the diesels, giant tidal wave showed up, diesel generators immediately sucked water, and core cooling pumps switched to battery power. Batteries die after 8 or so hours of operation. Diesels still full of water. I am also unsure as to why the grid didn't seem to switch power to Fukushima to run their pumps. The only possibility I can come up with is that transmission lines were torn down by the tsunami. This possibility was a double reason to locate the diesels at a higher elevation then ground level. A cascade of errors as is usual in these types of situations. Dave |
#11
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Fukushima #3 Using Plutonium Fuel?
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#12
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Fukushima #3 Using Plutonium Fuel?
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#13
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Fukushima #3 Using Plutonium Fuel?
On Tue, 15 Mar 2011 00:59:18 -0700, Rich Grise
wrote: wrote: Plutonium is poisonous as all hell So don't eat any. in addition to its high radioavtivity and incredibly long half life. This is a contradiction. If it's got "high radioactivity," then it can't have an "incredibly long half life." It wears out, you see. Hope This Helps! Rich Actually, you don't need to eat it. If you breath in merely a few plutonium dust particles, you will die. This is nasty stuff. Radioavtivity and half life depend on the isotope. Those present in reactors are not the good kind for human health. Dave |
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