{"id":2022,"date":"2011-03-25T09:23:36","date_gmt":"2011-03-25T07:23:36","guid":{"rendered":"http:\/\/nuclearpoweryesplease.org\/blog\/?p=2022"},"modified":"2013-03-01T00:44:33","modified_gmt":"2013-02-28T22:44:33","slug":"day-fourteen-after-the-tsunami","status":"publish","type":"post","link":"https:\/\/nuclearpoweryesplease.org\/blog\/2011\/03\/25\/day-fourteen-after-the-tsunami\/","title":{"rendered":"Day fourteen after the tsunami"},"content":{"rendered":"

Uppdate 22:45(UTC) \/ 23:450(CET) \/ 07:45(JST)<\/strong><\/p>\n

There has been no further info yet on the status of the exposed workers or the status of the reactors. Only news about the reactors is that both number 1 and number 3 have now switched to fresh water injection into the core and number 2 was supposed to follow promptly. I end todays updates with a few video clips of the explosion in one of the refineries that was hit worst by the earthquake and tsunami. This disaster has struck so many lifes, so many industries and so many towns that it is hard to fathom.<\/p>\n

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Uppdate 16:30(UTC) \/ 17:30(CET) \/ 00:30(JST)<\/strong><\/p>\n

The 2 workes taken to hospital reportedly got a dose<\/a> to their feet and lower legs between 2-6 Sieverts from beta radiation. \u00a0They also got close to 200 mSv from gamma and an unknown internal dose.<\/p>\n

They have not shown any signs of acute radiation\u00a0sickness\u00a0so far. \u00a0But the dose to the legs are very worrying and in the worst case might mean amputation.<\/p>\n

Update 14:15 (UTC) \/ 13:15 (CET) \/ 22:15 (JST)<\/strong><\/p>\n

New updates from JAIF<\/a> and NISA(link 1<\/a>, link 2<\/a>, link3<\/a>). JAIF status is from 15:00 JST and NISA updates from 10:00 and 12:30 JST. As before the first number is from the JAIF update and the number within () is from the older NISA update.<\/p>\n

Reactor 1:<\/strong>
\nWater level in the core: 1.65 (1.65) meters below the top of fuel assemblies
\nCore pressure: 450 kPa (450 kPa)
\nContainment pressure: 295 (295) kPa
\nCore temperature(feedwater nozzle): 197.8 Celsius
\nCore temperature(bottom head) 153.6 Celsius
\nDose rate within containment: \u00a038.9 Sievert\/hour<\/p>\n

If one looks at the JAIF status updates one can see a very encouraging piece of information, they have switched from seawater to fresh water injection into the pressure vessel! That is one significant step in the direction of\u00a0stabilizing\u00a0the reactor since seawater injection could never be a permanent solution. They are still not using the internal pumps however. The temperature of the core seems to have been brought under control and the high containment pressure is on a slowly declining trend. We can only keep our hopes up that they will be able to avoid venting the containment.<\/p>\n

Reactor 2:<\/strong><\/p>\n

Water level in the core: 1.20 (1.2) meters below the top of fuel assemblies
\nCore pressure: \u00a0unknown
\nContainment pressure: 120 (120) kPa
\nCore temperature(feedwater nozzle): 107 Celsius
\nCore temperature(bottom head) 105 Celsius
\nDose rate within containment: \u00a045.6 Sievert\/hour<\/p>\n

Reactor 3.<\/strong>
\nWater level in the core: 2.3 m below the top of fuel assemblies.
\nCore pressure: 139 (139) kPa
\nContainment pressure: \u00a0107 kPa
\nCore temperature(feedwater nozzle): 42.8 Celsius (probably junk)
\nCore temperature(bottom head) 111,6 Celsius
\nDose rate within containment: \u00a051 Sievert\/hour<\/p>\n

Preparations are being made to switch from seawater to fresh water for reactor 2 and 3. If it goes as quickly as for number one it should be done within half a day. Work with electrical equipment on going.<\/p>\n

We have earlier warned for the possibility that molten material in the core can be lying on the bottom of the vessel and eating its way through, now that seems unlikely considering how low the bottom head temperatures of the vessel are. All of them are below 200 degrees.<\/p>\n

Dose rate at main gate around 200 micro sievert per hour.<\/p>\n

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Update 12:30 (UTC) \/ 11:30 (CET) \/ 20:30 (JST)<\/strong><\/p>\n

TEPCO is preparing to switch from salt water to fresh water for the core cooling. From NHK<\/a>:<\/p>\n


\nTEPCO says it intends to switch over from pumping sea water to pumping fresh water into the 3 reactors, as salt in the sea water could cause corrosion and buildup, hampering the smooth flow of water inside the structures.<\/em><\/p>\n

The company has been pumping seawater as an emergency measure.<\/em><\/p>\n

The power company also says preparations to switch to fresh water were completed at the No.1 reactor on Friday afternoon.<\/em>
\nOperations to pump fresh water into reactors No.2 and No 3 are expected to start later in the day.<\/em><\/p>\n

Update 10:00 (UTC) \/ 11:00 (CET) \/ 19:00 (JST)<\/strong><\/p>\n

Here are the status tables from the JAIF update described below and summary.<\/p>\n

Reactor 1:<\/strong>
\nWater level in the core: 1.7 meters below the top of fuel assemblies
\nCore pressure: 465 kPa
\nContainment pressure: 310 kPa
\nCore temperature(feedwater nozzle): no new info yet today
\nDose rate within containment: \u00a0no new info yet today<\/p>\n

Pressure has decreased by about 60-80 kPa in both vessel and containment since yesterday.<\/p>\n

Reactor 2:<\/strong>
\nWater level in the core: 1.10 meters below the top of fuel assemblies
\nCore pressure: unknown
\nContainment pressure: 120 kPa
\nCore temperature (feedwater nozzle): no new info yet today
\nDose rate within containment: no new info yet today<\/p>\n

Reactor 3.<\/strong>
\nWater level in the core: 2.3 m below the top of fuel assemblies.
\nCore pressure: 139 kPa
\nContainment pressure: \u00a0107 kPa
\nCore temperature (bottom head): no new info yet today
\nDose rate within containment:\u00a0no new info yet today<\/p>\n

Containment damage is again suspected on number 3, otherwise no major changes since yesterday. Let’s hope the containment is not damaged! Luckily the reactors in the possibly damaged containments are behaving more stable than the number one reactor (that has a undamaged containment).<\/p>\n

Picture of reactor number 3 building<\/p>\n

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Update 08:45 (UTC) \/ 09:45 (CET) \/ 17:45 (JST)<\/strong><\/p>\n

The 16:00 JAIF update for March 25<\/a> has been published. Two changes:<\/p>\n

…so far seventeen workers have been exposed to more than 100 mSv of radiation.<\/p>\n

100 mSv is the limit where an increase in cancer risk has been proven. At 100 mSv, the lifetime risk of getting cancer increases from about 25-32% to 29-36%.<\/p>\n

Keep in mind that this does not say whether or not any of these workers will actually get any cancer, much less die from it. It is safe to assume that just as after Hirosima\/Nagasaki, the medical authorities will keep those exposed under very close watch, meaning their chances of getting diagnosed early and thus surviving any cancer will be quite good.<\/p>\n

The other change is that the\u00a0radiation reading at the main gate has gone up again:<\/p>\n

The Main Gate: 259.0\u03bcSv\/h at 11:00, Mar. 25<\/p>\n

The pressure in the #1 containment vessel is moving up and down.\u00a0 #2 is stable. The #3 pressure is slowly decreasing. With the worries of a leak from #3, this may have more than one explanation, not all of them good.<\/p>\n

Update 07:20 (UTC) \/ 08:20 (CET) \/ 16:20 (JST)<\/strong><\/p>\n

The 10:00 (JST) JAIF update for March 25<\/a> has the following new entries:<\/p>\n

Monitoring results of seawater sampled at the coast near the Fukushima Dai-ichi NPS on Mar. 23rd showed that radioactive Iodine, Cesium, Ruthenium, and Tellurium exceeding the regulatory limit were detected. Also, monitoring results of seawater sampled at coasts within about 16km from the Fukushima Dai-ichi NPS in Mar. 23rd showed that radioactive Iodine and Ruthenium exceeding the regulatory limit were detected.<\/p>\n

Nuclear Safety Commission of Japan reported the result of preliminary calculation of exposure dose in the surrounding area of Fukushima Dai-ichi NPS.<\/p>\n

The\u00a0dose rate mesaured at the main gate has dropped slightly, from 209.4\u03bcSv\/h at 12:00, Mar. 24 to 193.8\u03bcSv\/h at 06:00, Mar. 25.<\/p>\n

The high exposure of three workers in the number three turbine hall suggests that #3 may have\u00a0a leak after all, says the government’s Nuclear and Industrial Safety Agency<\/a>.<\/p>\n

Water supplies continue to show taints of Iodine-131<\/a>, but the readings fluctuate and it’s still hard to make out a general trend. Tokyo is no longer under a recommendation not to drink the tap water, but concerned citizens continue to use bottled water to some extent.<\/p>\n

Following the latest findings, the Tokyo officials said it will no longer warn against consumption of tap water in the metropolitan area.<\/p>\n

”I believe readings will go up and down. But even if levels exceed standards temporarily, it will be no problem as long as they stay (most of the time) within the range throughout the year,” Tokyo Gov. Shintaro Ishihara said at a news conference. ”I hope people in Tokyo would act calmly.”<\/p>\n

Still, people in the capital area — located about 220 kilometers from the crippled Fukushima Daiichi nuclear plant — and elsewhere continued to buy up limited supplies of bottled water from shops and vending machines.<\/p>\n

The government has asked that people in the 20-30 km zone around the crippled Fukushima plant to evacuate volontarily<\/a> out of concern for supplies for daily necessities.<\/p>\n

The Japanese government has encouraged people living within 20 to 30 kilometers of the troubled nuclear plant in Fukushima Prefecture to leave voluntarily, with concerns over access to daily necessities rather than resident safety prompting the advice, top government spokesman Yukio Edano said Friday.<\/p>\n

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L\u00e4nkar:<\/p>\n

SvD mycket troligt en l\u00e4cka i 3an<\/a>
\nFlute<\/a>
\nKommunisternas blogg<\/a>
\nMartin Mobergs blogg<\/a>
\nR\u00f6da berget<\/a>
\nAktieskolan<\/a>
\n Cornucopia<\/a>
\nR\u00f6da malm\u00f6<\/a>
\nDivage<\/a><\/p>\n

DN K\u00e4rnan kan vara skadad<\/a> (den person som valde den h\u00e4r rubriken borde sluta anv\u00e4nda google translate….)
\nDN cesium i gr\u00f6nsaker i Tokyo<\/a>
\nAftonbladet hotet i japan \u00e4r osynligt<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Uppdate 22:45(UTC) \/ 23:450(CET) \/ 07:45(JST) There has been no further info yet on the status of the exposed workers or the status of the…<\/p>\n

Continue readingDay fourteen after the tsunami<\/span><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,57,433,254],"tags":[427,690,437,481,434,480,4,435],"_links":{"self":[{"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/posts\/2022"}],"collection":[{"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/comments?post=2022"}],"version-history":[{"count":41,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/posts\/2022\/revisions"}],"predecessor-version":[{"id":7217,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/posts\/2022\/revisions\/7217"}],"wp:attachment":[{"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/media?parent=2022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/categories?post=2022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/tags?post=2022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}