Japan Earthquake | Page 2066
@Pedro Jesus They never sad the amount that is there because is much more than "Comfortable" for then. I don't believe TEPCO can not measure that proper. Is the same old story. "What you don't now you can not tell no one" Like EPA in America. If they don't measure there are no law that cam make they say the radiation levels in Americaby Majj 8/2/2011 12:02:54 PM
@Majj I don't think that would be the case in this particular situation. That worker wouldn't put his life in danger if his meter read max levels at further distances. He wouldn't go any further. That's why he taped the portable device to the tip of that pole. If says in one of those articles posted below that from where the worker was standing the reading was around 40mSv/h. This information is very important since it tells us straight away that the sources of the radiation in that particular spot are beta emitters.by Pedro Jesus 8/2/2011 12:06:57 PM- @Pedro Jesus Yes is true Pedro , is a terrible reality . ikrockhopper Itsumi Kakefuda
The Fukushima worker tweeted last night: "We need to walk by the high radiation area (where >10Sv detected): so, I always run."
11 hours ago
POOR SOULby Majj 8/2/2011 12:09:02 PM - @Majj And they should run fast. 40mSv/h is still a considerably high radiation level even with their protective gear.by Pedro Jesus 8/2/2011 12:10:53 PM
@Pedro Jesus You are right :-((((
theintelhub.comby Majj via Theintelhub 8/2/2011 12:12:41 PM
On phone but note from Majj pic that if you look at my blow up the counter on a pole man didn't have his trousers cuffs tapedby elainekirk 8/2/2011 12:17:14 PM- @elainekirk I noticed that. I wonder what criteria they apply concerning the protective gear each worker uses under what conditions?by Pedro Jesus 8/2/2011 12:18:37 PM
- uses=wearsby Pedro Jesus 8/2/2011 12:20:12 PM
An employee checked the radiation levels in the nuclear power plant in Fukushima is what he were for more than 10 Sievert p4.focus.de
by Majj via P4.focus.de 8/2/2011 12:23:26 PM- Pedro they are still asking for a water with straw set up because they so hot and they have no cool outfits still same outfits they started with so if they needed tape then.......do you think they need more tape I will ask when home why they not tapeby elainekirk 8/2/2011 12:23:51 PM
Morning (afternoon - evening)by lillymunster 8/2/2011 1:02:28 PM- @Pedro Jesus couple of questions. They found these hot spots using the gamma camera. How would that work that they show up on a gamma detector but they are primarily beta? Any idea what it likely means if the radiation is mostly beta?by lillymunster 8/2/2011 1:06:04 PM
- @elainekirk I asked someone on twitter last night who has been hammering on the govt. and tepco for not providing masks with a drinking water system, what it would take to get the gear for them. He said TEPCO is fighting it and the political weight they throw around is preventing the govt. from mandating it. Sounded very much like the Manichi article where they were fighting against the boundary walls.
mdn.mainichi.jpby lillymunster 8/2/2011 1:09:11 PM - @lillymunster Was it a gamma camera? The thing is gamma radiation doesn't decrease much over distance so 10Sv/h on that spot would mean there would be 10Sv/h basically everywhere else in the plant and that is not corroborated by the radiation stations around the plant. It can't be gamma. The gamma camera must be able to pick up other radiation spectra apart from gamma ray like infra red, for example.
If the radiation is mostly beta it is probably being emitted by particulates of Strontium-90 or Caesium which have half lives of around 30 years. Iodine-131 would have dissipated by now, if we are to trust TEPCO's statement that that pipe hasn't been used since very early in the crisis. I leave further analysis for our experts.by Pedro Jesus 8/2/2011 1:18:44 PM - @Pedro Jesus TEPCO stated it was the gamma camera. They have not given details of the capability of the gamma camera that I know of. They used it to detect concentrations inside #3 about a month or so ago.by lillymunster 8/2/2011 1:24:04 PM
- @lillymunster Can you show the link where TEPCO states it was the gamma camera? It doesn't make much sense sending a worker to measure a gamma source so closely when he could have measured it from the camera itself. And the camera station is probably equipped with a radiation meter as well. Or is it a portable camera? Sorry for all the questions, trying to make some sense of this.by Pedro Jesus 8/2/2011 1:27:11 PM
- @lillymunster Found the link down below.by Pedro Jesus 8/2/2011 1:28:32 PM
- @Pedro Jesus I think the gamma camera is portable. I will see if I can find the press release that stated that. I think there is a pic of the camera also. Will see what I can find.by lillymunster 8/2/2011 1:30:20 PM
The gamma camera www.tepco.co.jp
by lillymunster via Tepco.co.jp 8/2/2011 1:33:16 PM- @lillymunster Well, anyway, I just remember something. Beta emitters also radiate a small percentage of gamma rays so they can still be detected by specific gamma cameras. Don't bother looking. I should have realized the obvious already, lol.by Pedro Jesus 8/2/2011 1:33:18 PM
The gamma camera www.tepco.co.jp
by lillymunster via Tepco.co.jp 8/2/2011 1:33:22 PM- Found the reference to the gamma camera
"Tepco sent three workers around the ventilation stack today after a gamma camera detected high radioactivity levels in the area yesterday, Matsumoto said. The workers were exposed to as much as 4 millisieverts during the work, he said." www.bloomberg.comby lillymunster 8/2/2011 1:39:05 PM - @lillymunster The camera is obviously sensitive enough to pick up poor gamma sources such as beta emitters (Strontium, Iodine, Caesium...).by Pedro Jesus 8/2/2011 1:42:05 PM
more details:
High radioactivity level at reactor building
The operator of the Fukushima Daiichi nuclear power plant says it has detected the highest confirmed indoor level of radioactivity at the facility since the March accident.
The Tokyo Electric Power Company, or TEPCO, said on Tuesday that the level in a room on the second floor of the Number One reactor building was 5,000 millisieverts per hour.
The utility restricted access to the room, saying it will consider measures to block the radioactivity and that it has no immediate plans for operations needed in the room to bring the troubled reactor under control.
TEPCO says the level was detected because pipes running through the room were used to vent air containing radioactive substances from the reactor on March 12th.
On Monday, a level of 10,000 millisieverts per hour was detected near pipes outside the building.
Tuesday, August 02, 2011 20:24 +0900 (JST)
www3.nhk.or.jpby Edano 8/2/2011 1:44:56 PM- @Edano could steam during the venting attempt have had vaporized fuel in it? Interesting that this route seems to be still highly radioactive. One of the videos of the explosions showed a puff of smoke or steam out of the stack right before the explosion. I can't remember if it was unit 3 or 1.by lillymunster 8/2/2011 1:47:42 PM
- i pointed that out before: they vented #1 after the explosion. i wonder if there was any sense doing that, the other reactors were vented before the explosion and i guess the steam wasn't as radiated as #1.by Edano 8/2/2011 1:48:00 PM
- #1 was not vented to prevent an explosion, it was vented to release radiation, obviously.by Edano 8/2/2011 1:49:49 PM
- @Edano And that venting was probably the source of the extremely high radiation levels on March. Some particulates tend to adhere to the inner surface of the piping system, hence this high radiation level on that particular spot.by Pedro Jesus 8/2/2011 1:49:59 PM
- @Pedro Jesus : normally there is a filter before the stack, i guess tepco did not equip that.by Edano 8/2/2011 1:51:59 PM
- @Edano Something must have gone wrong there, no doubt about it.by Pedro Jesus 8/2/2011 1:53:17 PM
- well, it could be that we have highly radioactive filter parts in the pipes. that would explain it a bit. if there was a filter...by Edano 8/2/2011 1:54:06 PM
- My understanding was that the normal vent system had a filter and the emergency vent stack did not as that is to be used only in a dire emergency to keep the RPV from exploding. Peter knows more about the vents and venting and could probably explain what the situation was.by lillymunster 8/2/2011 2:03:00 PM
Gm, the hardened vents are used to release pressure from the primary containment to prevent its failure. The reactors at Fukushima are equipped with two such vents: one attaches to the dry well, the other to the wet well. The operators managed to open the wet well hardened vent on Unit 1 during the morning hours of Sat., Mar 12. Thus, venting was carried out before the explosion. In Japan, in as much as in the US, the hardened vent pipes bypass the Standby Gas Treatment System (SBGT) www.beyondnuclear.org on the premise that radioactivity from the RPV released into the suppression pool through Safety/Relief valves remains in the suppression pool water and does need to be filtered (sort of like in an Arabian water pipe). Reactors in some countries feature hardened vents fitted with air filters and systems to eliminate hydrogen as a precaution. Not in Japan.
by Peter Melzer via Beyondnuclear.org 8/2/2011 2:45:44 PM- The high radiation levels at Fuku has made it to most of the US media today.
www.nytimes.com
www.reuters.comby lillymunster 8/2/2011 2:59:39 PM 
GSE Systems launches MAAP-HD for severe nuclear accident training, response
www.pennenergy.comby Panserbjorne9 8/2/2011 2:59:58 PM- @lillymunster i even found it in an Arkansas site!by Panserbjorne9 8/2/2011 3:00:15 PM
- by Panserbjorne9 8/2/2011 3:01:56 PM
- August 2
Fukushima: More 'tainted cows' shipped www.yomiuri.co.jpby Panserbjorne9 8/2/2011 3:03:33 PM - Livestock farmers in despair www.yomiuri.co.jpby Panserbjorne9 8/2/2011 3:04:09 PM
- Credit, debt and bond issues around power companies in Japan
www.reuters.com
Countdown to Hiroshima
www.thenation.com
Former PM roles in nuclear power
mdn.mainichi.jp
Imtech sees profits in German nuclear shutdown
www.reuters.comby lillymunster 8/2/2011 3:05:54 PM - August 3
Fukushima people seek science savvy on skepticism of government mdn.mainichi.jpby Panserbjorne9 8/2/2011 3:06:47 PM 
gamma camera photo of the hot spot by unit 1 vent tower
photoblog.msnbc.msn.com
msnbcmedia.msn.comby lillymunster via Msnbcmedia.msn 8/2/2011 3:06:58 PM- @lillymunster , tepco knew about a hot spot in the area. They covered it with green and brown radiation protective goo. It is a bit obvious. The bottom of the stack serves as a catch for the soot like in a home. All particulate that does not leave the stack falls back to the stack's bottom.by Peter Melzer 8/2/2011 3:09:11 PM
- This video has shots of the tower. The lower left hot spot, it appears that the stack pipe dips down below where the pipe connects up higher www.youtube.comby lillymunster 8/2/2011 3:09:18 PM
- @Peter Melzer The section of pipe that connects in dips down for maybe 20 feet before it connects so there is a low spot as it connects in. It could also cause things to collect.by lillymunster 8/2/2011 3:10:20 PM
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