{"id":2307,"date":"2011-04-06T21:42:24","date_gmt":"2011-04-06T19:42:24","guid":{"rendered":"http:\/\/nuclearpoweryesplease.org\/blog\/?p=2307"},"modified":"2013-03-01T00:44:02","modified_gmt":"2013-02-28T22:44:02","slug":"26-days-after-the-tsunami","status":"publish","type":"post","link":"https:\/\/nuclearpoweryesplease.org\/blog\/2011\/04\/06\/26-days-after-the-tsunami\/","title":{"rendered":"26 days after the tsunami"},"content":{"rendered":"

21:30(CET)\/19:30(UTC)\/04:30(JST)<\/strong><\/p>\n

Another rather\u00a0uneventful\u00a0day. The sodium silicate injection into the pit seems to have\u00a0succeed\u00a0in stopping the flow of water<\/a>, like I mentioned yesterday this is not a permanent solution and eventually the water will find another path into the ocean until the source of the water is plugged. But it is a good development and every day the water is kept from going into the ocean it is another day with decaying I-131 levels.<\/p>\n

TEPCO is pumping nitrogen<\/a> into the containment of the number 1 reactor and is planning to do the same with number 2 and 3. They are afraid of new hydrogen explosions, this time the source of the hydrogen would be\u00a0radiolysis of water. Simply put, radiation breaks the chains connecting the hydrogen and oxygen in water and creates free hydrogen. One could also suspect further steam and zirconium reactions might have taken place during the temperature peaks in the number one reactor if the flow of water was temporarily not sufficient. Regardless of the source of hydrogen, if the containment is filled with nitrogen it prevents a combustible mixture of oxygen and hydrogen to occur.<\/p>\n

The temperature of the feed water nozzle<\/a> in the number one reactor is creeping downwards. Now it is at 221.6\u00a0degrees\u00a0Celsius, yesterday it was 233.5 and the day before 242.6. The pressure is showing the\u00a0opposite\u00a0trend and is slowly rising, hitting 733 kPa today, 720 kPa yesterday and 704 kPa the day before. Like I also mentioned yesterday this isn’t much of an issue because it is just one tenth of normal operating pressure. Only problem I could imagine is that if the pressure climbs to high the temporary pumps they are using might not be able to match it, but flow rate is steady so far. Containment pressure is steady at 150 kPa.<\/p>\n

IAEA reports<\/a> that instrumentation now has power in reactor number 3. I hope it means they will soon be able to give more detailed information about the status of the reactor. Perhaps my pessimism about the drenched switchboard was wrong, we will see!<\/p>\n

There has been reports that detected levels of Tellurium-129 hints of re-criticality, due to the short half live of Te-129 (69.6 minutes). But that ignores that a excited state of Te-129 is also created as a fission product, the excited state has a half life of 33.6 days and of course decays into the ground state. So finding Te-129 now is not very strange at all.<\/p>\n

Nothing new about the status of fallout in the prefectures around Fukushima.<\/p>\n

 <\/p>\n

***************<\/p>\n

Links(English)
\nReuters Japan stop nuclear plant leak <\/a><\/p>\n

Blogs(English)
\nAtomic Power Review\u00a0Wednesday early afternoon update<\/a>
\nIdaho Samizdat\u00a0NRC threat assessment of Fukushima risks<\/a>
\nNEI Nuclear Notes\u00a0Wednesday Update<\/a><\/p>\n

Links(Swedish)
\nDN\u00a0Flytande glas har lyckats t\u00e4ta l\u00e4ckan <\/a><\/p>\n

Blogs(Swedish)<\/strong>
\nH\u00f6g radioaktivitet i fisk<\/a>
\nTellurium 129 tyder p\u00e5 reaktion i Fukushima<\/a>
\nOm milj\u00f6katastrofer som r\u00e4ddare av ekosystem<\/a>
\n“Oberoende” k\u00e4rnkraftsexperter avl\u00f6nas av atomindustrin<\/a>
\nVad h\u00e4nder i Fukushima?<\/a>
\nFukushima news and explanations<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

21:30(CET)\/19:30(UTC)\/04:30(JST) Another rather\u00a0uneventful\u00a0day. The sodium silicate injection into the pit seems to have\u00a0succeed\u00a0in stopping the flow of water, like I mentioned yesterday this is not…<\/p>\n

Continue reading26 days after the tsunami<\/span><\/a><\/div>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/posts\/2307"}],"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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/comments?post=2307"}],"version-history":[{"count":4,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/posts\/2307\/revisions"}],"predecessor-version":[{"id":2309,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/posts\/2307\/revisions\/2309"}],"wp:attachment":[{"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/media?parent=2307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/categories?post=2307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/tags?post=2307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}