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Originally posted by VisionsOfMann
reply to post by Purplechive
Here's my guess, it's a bank of light stands and they are working on the CSFP building. The bright flash at the end was likely welding. If it were fire, there would be serious smoke.
It would make sense to start working on the CSFP, they are the only SFR's thay have access cleanly to besides the SFP's of Unit 5 & 6.
After all, Units 1,2 & 3 are stable now!! They have to be, Tepco would never give misleading info.
And the radiated beef, this is only the beginning of the beginning for a poisoned food chain.
Originally posted by Purplechive
Video - Fire? Explosions? Lights?
Originally posted by qmantoo
Now don't all wet your knickers with excitement...
To help with our on-going research into this disaster, I have pulled together a list of all the 420+ PDF files linked to from within the posts of this humungous thread. If anyone would like to download it for themselves, please right-click and save-as. Keep up the good work folks and post more whenever and wherever you find them. It helps us all to keep on top of TEPCO's shenanigans.
PDF file list here
I have included thread page, pdf title and file size, text used to link to the pdf is given and also a modified date if it can be found. Links to this thread and proper acknowledgement is given to those who originally found the document. See the text above the table for details.
Atoms for Peace
The IAEA is the world's center of cooperation in the nuclear field. It was set up in 1957 as the world's "Atoms for Peace" organization within the United Nations family. The Agency works with its Member States and multiple partners worldwide to promote safe, secure and peaceful nuclear technologies.
The IAEA works for the safe, secure and peaceful uses of nuclear science and technology. Its key roles contribute to international peace and security, and to the world's Millennium Goals for social, economic and environmental development.
Management of On-site Contaminated Water
According to the 25 April evaluation by NISA of the report submitted by the Tokyo Electric Power Company (TEPCO), there is a little less than 70 000 tonnes of stagnant water with high-level radioactivity in the basement of the turbine buildings of Units 1, 2 and 3.
...a little less than 70,000 tonnes of stagnant water with high-level radioactivity in the basement of the turbine buildings of Units 1, 2 and 3.
The stagnant water (around 120 m3) in the basement of the turbine building of Unit 6 was transferred to a temporary tank on 1 May.
The transfer of stagnant high-level radioactivity water from the basement of the turbine building of Unit 6 was resumed on 2 May.
Work to block the Unit 2 trench pit was started on 1 May.
On 27 April TEPCO provided an update of the estimated percentage of core damage for Units 1, 2 and 3 following an assessment (the values assessed previously which TEPCO had provided on 15 March are given in parentheses):
Unit 1: 55% core damage (70%) 15% DECREASE
Unit 2: 35% core damage (30%) 5% INCREASE
Unit 3: 30% core damage (25%) 5% INCREASE
(Color added for emphasis.)
This reflects a revised assessment [color=limegreen]rather than any recent changes in conditions in the reactor cores.
White "smoke" continues to be emitted from Unit 2 and Unit 3. There was no more white "smoke" seen emanating from Unit 4 as of 21:30 UTC on 25 April or from Unit 1 as of 21:30 UTC on 30 April.
In Unit 1 fresh water is being continuously injected into the reactor pressure vessel through the feedwater line at an indicated flow rate of 6 m3/h using a temporary electric pump with off-site power.
In Unit 2 and Unit 3 fresh water is being continuously injected into the reactor pressure vessel through the fire extinguisher line at an indicated rate of 7 m3/h using temporary electric pumps with off-site power.
On 29 April TEPCO checked the status inside the reactor building of Unit 1 using a remotely controlled robot and confirmed that there was [color=limegreen]no significant leakage of water from the primary containment vessel. Nitrogen gas is still being injected into the containment vessel in Unit 1 to reduce the possibility of hydrogen combustion inside the containment vessel. The indicated pressure in the reactor pressure vessel is still increasing.
The indicated pressure in the reactor pressure vessel is still increasing.
In Unit 1, the indicated temperature at the feedwater nozzle of the reactor pressure vessel is
142° C and at the bottom of reactor pressure vessel is 106° C.
In Unit 2 the indicated temperature at the feedwater nozzle of the reactor pressure vessel is 118 °C. The reactor pressure vessel and the dry well remain at atmospheric pressure. On 28 April an amount of 43 tonnes of fresh water was injected into the spent fuel pool using the spent fuel pool clean-up system.
On 28 April an amount of 43 tonnes of fresh water was injected into the spent fuel pool using the spent fuel pool clean-up system.
On 2 May an amount of 55 tonnes of fresh water was injected into the Unit 2 spent fuel pool using the fuel pool clean-up system.
In Unit 3 the indicated temperature at the feed water nozzle of the reactor pressure vessel is 99 °C and at the bottom of the reactor pressure vessel is 124 °C. The reactor pressure vessel and the dry well remain at atmospheric pressure.
There has been no change in the status in Unit 5 or in the common spent fuel storage facility.
Spraying of anti-scattering agent at the site is continuing. An area of about 1 000 m2 on the south side of the turbine building of Unit 4, and an area of about 4 400 m2 of the surface on the slope around the former main office building, near the on-site gymnasium and on the west side of the shallow draft quay, were sprayed on 1 May.
2. Radiation Monitoring
The daily monitoring of deposition of caesium and iodine radionuclides for the 47 prefectures continues. Deposition of Cs-137 and Cs-134 was detected in six prefectures on 2 May. The values reported ranged from 2.6 Bq/m2 to 19 Bq/m2.
Compared with recent data, deposition of these radionuclides has been detected in fewer prefectures and in lower amounts than for previous days.
Gamma dose rates are measured daily in all 47 prefectures.
[color=limegreen]A general decreasing trend has been observed in all locations since around 20 March.
Gamma dose rates reported on 2 May remain at 1.7 µSv/h for Fukushima prefecture and 0.11 µSv/h for Ibaraki prefecture.
The other 45 prefectures had gamma dose rates of below 0.1 µSv/h, falling within the range of local natural background radiation levels.
Gamma dose rates reported specifically for the eastern part of Fukushima prefecture, for distances of more than 30 km from the Fukushima Daiichi plant, ranged from 0.1 µSv/h to 19.7 µSv/h, as reported on 2 May.
Since 1 April there has been [color=limegreen]one remaining restriction on the consumption of drinking water relating to I-131 (with a limit of 100 Bq/L), which is applicable only for [color=limegreen]one village in the Fukushima prefecture and [color=limegreen]only for infants.
According to the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT), I-131 was detected in one prefecture on 29 April, with a reported value of 0.22 Bq/L; in two prefectures on 30 April, with reported levels of 0.04 Bq/L and 0.10 Bq/L respectively; and in one prefecture on 1 May, with a reported level of 0.38 Bq/L. Cs-137 was reported on 30 April in only one prefecture, with a measured level of 0.05 Bq/L.
All these levels are [color=limegreen]below the limits set by the Japanese authorities for the restriction of water consumption due to the presence of radionuclides. The other samples did not show levels of radionuclides above the detection limit for I-131, Cs-134 and Cs-137.
On 1 May restrictions were lifted on the distribution of raw unprocessed milk in Fukushima prefecture from the city of Minamisouma (limited to Kashima-ku and excluding Karasuzaki, Ouchi, Kawago and Shionosaki areas) and Kawamata town (excluding Yamakiya area).
Japan Finds Radiation in Milk, Drinking Water
[FUKUSHIMA, Japan (AP) - In the first sign that contamination from Japan's stricken nuclear complex had seeped into the food chain, officials said Saturday that radiation levels in spinach and milk from farms near the tsunami-crippled facility exceeded government safety limits.
Six workers trying to bring the Fukushima Dai-ichi plant back under control were exposed to more than 100 millisieverts of radiation - Japan's normal limit for those involved in emergency operations, according to Tokyo Electric Power Co., which operates the complex. The government raised that limit to 250 millisieverts on Tuesday as the crisis escalated.
Officials said the crisis at the plant appeared to be stabilizing, with near-constant dousing of dangerously overheated reactors and uranium fuel, but the situation was still far from resolved.
We more or less do not expect to see anything worse than what we are seeing now,
said Hidehiko Nishiyama of the Nuclear and Industrial Safety Agency.
Chief Cabinet Secretary Yukio Edano, meanwhile, insisted
the contaminated foods pose no immediate health risk.
3. Marine Monitoring
The marine monitoring programme is carried out both near the discharge areas of the Fukushima Daiichi plant by TEPCO and at off-shore stations by MEXT. (The locations of the sampling positions have been provided in previous briefings.)
Increased radioactivity in the marine environment occurred by aerial deposition and by discharges and outflow of contaminated water with a high radioactivity level.
In a news release issued on 25 April, NISA communicated its evaluation of a report submitted by TEPCO on 21 April in relation to contaminated water with a high radioactivity level that flowed out from Unit 2 of the Fukushima Daiichi plant.
The outflow rate is estimated to have been approximately 4.3 m3/h. The concentrations of the relevant radionuclides, estimated from measurements, were 5400 MBq/L of I-131, 1800 MBq/L of Cs-134 and 1800 MBq/L of Cs-137.
The outflow rate is estimated to have been approximately 4.3 m3/h.
The activity concentrations of I-131, Cs-134 and Cs-137 in sea water at the screen of Unit 2 were measured every day from 2 April to 30 April. The [color=limegreen]concentrations fell by several orders of magnitude from initial values of more than 100 MBq/L at the beginning of April to less than 10 kBq/L for Cs-134 and Cs-137 on 30 April, with a continuing decreasing trend.
However, levels of I-131 remained at around 100 kBq/L from 26 April to 30 April at this sampling position. The sandbags containing Zeolite® absorbers that were placed at several locations between Unit 2 and Unit 4 to reduce the concentrations of Cs-134 and Cs-137 seem to be effective.
The concentrations of the relevant radionuclides at the other TEPCO sampling positions show a [color=limegreen]general decreasing trend up to 30 April.
Monitoring performed by MEXT at off-shore sampling positions consists of:
Measurement of ambient dose rate in air above the sea;
Analysis of ambient dust above the sea;
Analysis of surface samples of seawater; and
Analysis of samples of seawater collected at 10 m above the sea bottom.
The analysis for almost all sampling positions has shown a general decreasing trend in concentrations of the relevant radionuclides over time.
Samples were taken at stations 1 - 10 every four days after 2 April. Activity concentrations at MEXT sampling points 30 km off-shore are significantly lower than those at TEPCO sampling points 15 km off-shore. None of the activity concentrations of I-131 and Cs-137 in surface samples taken from points 1, 3, 5, 7, 9 and S-3 on 27 April and from points 2, 6 and S-4 on 25 April were above the detection limits. Samples taken from points 4, 8 and 10 showed concentrations of Cs-137 between of 10.5 Bq/L and 40 Bq/L. Only the sample from point 10 had an I-131 activity concentration, at 21.5 Bq/L, that was above the detection limit.
Samples were taken at the recently added off-shore stations at the Ibaraki prefecture on 25 April. There were no activity concentrations of I-131 and Cs-137 in the surface layer of sea water that were above the detection limits.
Radiation Monitoring in Ports
On 22 April the Japanese Ministry of Land, Infrastructure, Transport and Tourism (MLIT) issued guidelines for radiation measurements in ports in Japan in order to provide foreign port authorities with accurate data. The guidelines cover gamma dose rate measurements for export shipping containers and shipping as well as radiation monitoring of the atmosphere and of sea water in ports.
Originally posted by VisionsOfMann
Well, looks like it was a bank of lights and welding after all!! How about that!!
From NHK World; www3.nhk.or.jp...