TEPCO — Detailed Analysis Results in the Port of Fukushima Daiichi NPS, around Discharge Channel and Bank Protection, Nov. 27, 2014:
- 990,000 Bq/liter (Results published Nov. 27, 2014 — Sample taken Oct. 2, 2014)
- TEPCO’s ‘permissible limits’ for water discharge of Strontium-90 is 10 Bq/liter
– Ocean hits record high for radioactive Strontium at all 6 locations near Fukushima reactors — Levels up to 20 times higher than reported last week — Officials: Contamination from highly radioactive ‘debris’ is seeping into ground and flowing out to sea (ENENews, Sep 15, 2014):
TEPCO Prompt Report of Result of Analysis, Sept. 10, 2014:
Port of Fukushima Daiichi, around Discharge Channel and Bank Protection — Seawater
This newly published data shows record levels of Strontium-90 have been detected at all 6 seawater monitoring locations in front of the destroyed reactors. At 3 of 6 locations levels are around triple the previous record set last year.
– All β nuclide density in reactor2 groundwater 1,000 times much as before Feb / 10 times much in plant port too (Fukushima Diary, June 8, 2014):
All β nuclide (including Strontium-90) density in groundwater jumped up by 1,000 times since this February, according to Tepco.
It is from Tepco’s report about groundwater contamination released on 6/6/2014. The location is in the seaside of reactor2.
– Fukushima worker “5,000,000,000 Bq/m3 of Strontium-90 water got on the boots” / Tepco “I’m sorry.” (Fukushima Diary, Feb 8, 2014):
Following up this article..Tepco been mis-analyzing Strontium-90 in contaminated water and seawater for 2.5 years since 311 [URL]
Fukushima workers were building the underground wall only a few meters away from the location that they measured 5,000,000,000 Bq/m3 of Strontium-90 from the groundwater of. However, Tepco didn’t inform the workers of the contamination level for over half a year.
The extremely contaminated water got on the boots of workers while they were injecting the chemical material underground. They had to pile macadams up to 1m high with the lead plate on the top to avoid the contamination, according to Tepco.
– Kyodo: ‘Massive’ amount of Fukushima data wrong? “Figures can’t be trusted” — NHK: Strontium-90 by ocean at 160,000 times limit — Tepco: Actual levels “exceeded the upper limit of measurement… We are very sorry” (ENENews, Feb 7, 2014):
Kyodo, Feb. 7, 2014: TEPCO to review “massive” radiation data due to improper measurement – [TEPCO] said Friday that it will review a “massive” amount of radiation data it has collected at the crippled Fukushima Daiichi nuclear power plant because readings may be lower than actual figures due to improper measurement. “We are very sorry, but we found cases in which beta radiation readings turned out to be wrong when the radioactivity concentration of a sample was high,” TEPCO spokesman Masayuki Ono told a press conference. […]
Kyodo/Jiji, Feb. 7, 2014: [TEPCO] said it will re-analyze past water samples because some of the figures can’t be trusted.
Jiji Press, Feb. 6, 2014: TEPCO Corrects Last Summer’s Water Pollution Data to Record High […] Samples collected from an observation well close to the sea in early July contained a record 5 million becquerels of strontium-90 per liter of groundwater, the company said. When TEPCO announced the original data that month, the firm said the total amount of radioactive materials emitting beta particles, including strontium-90, was 900,000 becquerels […] the total amount of beta particle-emitting materials […] are likely to be around 10 million becquerels, far higher than the previous record high of 3.1 million becquerels for the well.
Kyodo News, Feb. 6, 2014: Record-high strontium-90 in past Fukushima plant groundwater sample — [TEPCO] said Thursday that a groundwater sample taken from a well at the site in July last year contained a record-high 5 million becquerels per liter of radioactive strontium-90.[…] TEPCO official said that “all beta radiation could have been 10 million becquerels in total.”
– Officials: Tons of Fukushima radioactive waste in area beyond Tokyo, 150 miles from reactors — Higher strontium levels there than spot 1 mile from Daiichi plant — “Southern wind directions and rainfall explain relatively high activity levels” (ENENews, Feb 1, 2014):
Asahi Shimbun, Feb. 1, 2014: Sludge designated radioactive waste for 1st time in Kanagawa — The Environment Ministry has classified 2.9 tons of sludge from Prefecture as radioactive waste derived from the Fukushima nuclear disaster, the first such designation for the prefecture on the southern border of Tokyo. The designation, made in December, means the ministry is responsible for disposing of the radioactive sludge. […] Yokohama city government officials said the designation covers sludge from rain collection and storage facilities at 17 municipal elementary, junior high and other schools. […] The designation also included sludge collected from roadside ditches and elsewhere […] Waste containing more than 8,000 becquerels of radioactive cesium, spewed from the crippled Fukushima No. 1 nuclear power plant, per kilogram is eligible for the designation. […]
Concentration of Strontium-90 at Selected Hot Spots in Japan, PLOS ONE (Scientific Journal), March 2013:
– Fukushima kids’ teeth to be checked for strontium-90 (Japan Times, Jan 19, 2014)