Japan Earthquake

Japan Earthquake | Page 2884

@lilly links and quotes below. They say there was water only down at 5 meters, the vessel was very humid, and the corium was no where to be seen.
by bo 1/19/2012 12:32:19 PM

The pics tepco released are here: www.tepco.co.jp
by Peter 1/19/2012 12:36:13 PM

I looked at the pics in that PDF posted earlier, really hard to see anything
by lillymunster 1/19/2012 12:49:13 PM

Full sized pictures here www.tepco.co.jp

TEPCO pdf in English here www.tepco.co.jp

With English descriptions I can see if I can improve pictures
by lillymunster 1/19/2012 12:50:52 PM

Oh I know TEPCO has more pictures than that. All those are in the containment wall and some pipes.
by lillymunster 1/19/2012 12:53:40 PM

I think I can improve a few of the images from the scope.
by lillymunster 1/19/2012 1:07:10 PM

@lillymunster , did tepco release an English summary of their findings presented in the press conference?
by Peter 1/19/2012 1:20:04 PM

@Peter only an English version of the PDF so far no press statement or document like they have for other new information.
by lillymunster 1/19/2012 1:22:37 PM

greetings to all
by dean 1/19/2012 1:24:22 PM

Again, a hubristic safety culture. From the article: "Through a review of records, the board found that the probability of encountering damaged plutonium fuel plates is higher than expressed" in existing safety protocols for the reactor, which was decommissioned in 1992, the panel said.

"As a result, workers were at increased risk of exposure to uncontrolled radioactive material," the safety board said.

Battelle, the report found, had rated the chance of an accident like the one that occurred as "extremely unlikely," and there was no evidence "that any drill was performed that would have prepared the workforce to respond to an event like the" November 8 mishap.
www.reuters.com
by M.I.A. 1/19/2012 2:09:12 PM

Federal panel faults Idaho lab for radiation exposure mishap www.reuters.com refrence post below
by M.I.A. 1/19/2012 2:10:41 PM

'Substantial progress' at Fort Calhoun Nuclear Station www.omaha.com
by M.I.A. 1/19/2012 2:17:41 PM

dean are you still around?
by lillymunster 1/19/2012 2:24:03 PM

Enhanced photos from inside unit 2 containment are done www.simplyinfo.org full sized ones in the website. Due to the quality of the images there wasn't any ability to do zoom in shots on anything.
by lillymunster 1/19/2012 3:02:51 PM

Ibaraki firm develops portable dosimeter to help market 'Fukushima rice burgers' mdn.mainichi.jp
by lillymunster 1/19/2012 3:04:43 PM

I am back for a bit @ lilly
by dean 1/19/2012 3:10:23 PM

nice set of photo's from #2, the corrosion from all the chemicals injected into the system are certainly attacking the walls of the vessel. There are rates of corrosion which could be estimated to determine when a leak may occur just from that corrosion that was visible . very nicely done @ lilly
by dean 1/19/2012 3:14:00 PM

@dean thanks. I expected lots of rust. Was surprised how raised up it was. The containment liner is heavily rusted while the grate is not. I also noticed the radiation seems higher as they pointed the camera away from the containment and also up.
I thought the cameras they ordered were supposed to be radiation resistant. So I don't know is the radiation so bad even the radiation proof camera has issues or did they use a lesser camera?
by lillymunster 1/19/2012 3:16:32 PM

@dean, did you catch this news story from last night that TEPCO severed one of the incoming power lines before the quake and never bothered to fix it? They could have had power onsite after the quake. www.simplyinfo.org
by lillymunster 1/19/2012 3:20:05 PM

@lilly.. radiation hardened cameras these days can be purchased and I've used them in very high radiation level areas. Could be that the cameras they purchased were just not robust enough and "washed out". also, there are many things I would have tried to accomplish when they did that photo shot, 1-attach detectors for neutrons, beta-gamma on the cabling, 2-put a sniffer hose on the cabling so a grab sample could be pulled out to see what the air activity was and 3- put swabs which could pick up surface contamination..
by dean 1/19/2012 3:21:22 PM

@lilly.. that story is flabergasting, first off how could they severe a high power line, that must have caused some outages with short circuits. It certainly doesn't add up to me... shaking my head .. :(
by dean 1/19/2012 3:22:58 PM

AP report on the unit 2 scope www.huffingtonpost.com
by lillymunster 1/19/2012 3:25:55 PM

here are spec's on one camera I looked up...Features:
. COLOR CID (Charge Injection Device)
Radiation Hardened Imager
. Exceptional signal to noise and sensitivity.
. 3 x 10
6
Rads Total Dose (gamma)
. Excellent image at 1 x 10
5
rads/hr
. Replaceable Remote Head
. USB2.0 digital output
. Automatic White Balance
by dean 1/19/2012 3:26:12 PM

@dean There has been some confusion about what camera they used. A company in Sweden received an order from GE/Hitachi on behalf of TEPCO for one of their rad resistant camera scopes. Then EX-SKF reported that NHK's news report showed an Olympus model scope camera but didn't specify if it is radiation resistant. It was also unclear if NHK just grabbed a stock photo of a scope camera or if they knew more and this was literally the model being used.
by lillymunster 1/19/2012 3:29:03 PM

Press release about camera purchase www.pr.com

ISEC camera website www.isec.se
by lillymunster 1/19/2012 3:30:21 PM

100,000 REM is the range of that camera and I have used cameras that can tolerate 1 x 107 rem
by dean 1/19/2012 3:30:30 PM

@dean , so no little specks on the pics with the cameras you used?
by Peter 1/19/2012 3:31:20 PM

www.isec.se article at ISECwebsite
by dean 1/19/2012 3:32:40 PM

@Peter, no little specks is right, most of the time when the radiation level was too high as you approached with the camera it would just "white out"...
by dean 1/19/2012 3:33:22 PM

trying to find the specs on those cameras... one article said they spent 6 years on R&D.. hmmmmm
by dean 1/19/2012 3:36:02 PM

Olympus industrial scope cameras www.olympus-ims.com
by lillymunster 1/19/2012 3:36:51 PM

www.isec.se seems like isec rad cameras were more designed for use in areas within nuclear facilities but probably not at the intensity inside a core vessel
by dean 1/19/2012 3:38:40 PM

@dean right. ISEC's press release has more detail. Sounds like they are going to be area cameras.
by lillymunster 1/19/2012 3:39:35 PM

www.isec.se check this article out on page 4 and it shows those little specks on a standard commercial camera
by dean 1/19/2012 3:40:09 PM

The top of the line Olympus industrial scope. I couldn't find a separate class of radiation resistant cameras. This looks like the one in the NHK video www.olympus-ims.com
by lillymunster 1/19/2012 3:40:45 PM

According to the article posted on HuffPo, tepco could not find the water level in the primary containment. Hmm. www.huffingtonpost.com
by Peter 1/19/2012 3:44:48 PM

www.symphotic.com this is one which has been used
by dean 1/19/2012 3:45:48 PM

@peter, agree, their instruments probably show normal
by dean 1/19/2012 3:46:15 PM

Why could not they lower the gadget all the way down? Did the pictures white out as Dean says they might?
by Peter 1/19/2012 3:46:51 PM

www.barc.ernet.in another one used... 10 exp 6 RAD fields
by dean 1/19/2012 3:47:32 PM

Looks like there is a picture from the trial on reactor 5 through the endoscope on Tepco's site. www.tepco.co.jp Not a great picture but none of the interference.
by Hedge 1/19/2012 3:47:40 PM

@lilly.. would you be able to show on a photo of the reactor where they inserted the camera? would help to see with respect to other areas
by dean 1/19/2012 3:48:46 PM

@dean yes I have that. let me go grab
by lillymunster 1/19/2012 3:49:48 PM

@peter, it's interesting to see inside and the different materials of construction for where the rust attacks. I will bet that the fuku plants had issues that had to be tracked with underwater Ultrasonic INSPECTION for possibility of cracks occuring at nozzle penetrations. Now with the more aggressive attack by the rusting who knows when some sort of failure may occur
by dean 1/19/2012 3:52:24 PM