{"id":2694,"date":"2011-05-08T15:42:10","date_gmt":"2011-05-08T13:42:10","guid":{"rendered":"http:\/\/nuclearpoweryesplease.org\/blog\/?p=2694"},"modified":"2013-03-01T00:43:47","modified_gmt":"2013-02-28T22:43:47","slug":"day-58-dose-rates-climbing-in-the-number-2-wetwell","status":"publish","type":"post","link":"https:\/\/nuclearpoweryesplease.org\/blog\/2011\/05\/08\/day-58-dose-rates-climbing-in-the-number-2-wetwell\/","title":{"rendered":"Day 58: Dose rates climbing in the number 2 wetwell"},"content":{"rendered":"

Another week has passed and more steps have been taken to get the situation under control. Lets start with the usual reactor status table \u00a0made out of NISA data<\/a>:<\/p>\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

\n<\/strong><\/td>\n		Reactor 1<\/strong><\/td>\nReactor 2<\/strong><\/td>\nReactor 3<\/strong><\/td>\n<\/tr>\n
Water level (meter)*<\/td>\n-1.7<\/td>\n-2.1<\/td>\n-2.15<\/td>\n<\/tr>\n
Flow rate(m3\/min)<\/td>\n8<\/td>\n7<\/td>\n9<\/td>\n<\/tr>\n
Core pressure (kPa)<\/td>\n1390<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
Containment pressure (kPa)<\/td>\n120<\/td>\n60<\/td>\n102<\/td>\n<\/tr>\n
Wetwell pressure (kPa)<\/td>\n110<\/td>\n–<\/td>\n183.2<\/td>\n<\/tr>\n
Feedwater nozzle temp (Celsius)<\/td>\n119.8<\/td>\n115.6<\/td>\n202.1<\/td>\n<\/tr>\n
Bottom head temp (Celsius)<\/td>\n96.9<\/td>\n–<\/td>\n151.9<\/td>\n<\/tr>\n
Wetwell temperature (Celsius)<\/td>\n51.4<\/td>\n66.8<\/td>\n40.0<\/td>\n<\/tr>\n
Containment dose rate (Sv\/hour)<\/td>\n–<\/td>\n22.7<\/td>\n12.2<\/td>\n<\/tr>\n
Wetwell dose rate (Sv\/hour)<\/td>\n1.1<\/td>\n148<\/td>\n0.480<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
*Distance from top of assembly<\/em><\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
– broken gauges or missing data<\/em><\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Everything looks pretty stable except the wetwell dose rater in the number 2 reactor. It has increased to well over 100 Sv\/hour from 37.1 in the last update I made (i wrongly wrote 0.371). \u00a0I haven’t been able to follow the news so closely the last week so I have not seen if this has been mentioned in any TEPCO press release. Below is a graph of the increase. If anyone know of any action done on the number 2 reactor, starting the 3 or 4th of may please write a comment to this blog post.<\/p>\n

\ufeff\"\"<\/a><\/p>\n

 <\/p>\n

A air filtration system has been connected to the reactor building of reactor number 1. The purpose of it is to get airflow through the building and clean out the air activity by filtrating the air. It is hoped that it will be enough to allow workers to enter the building and work safely without getting to much dose.<\/p>\n

Kyodo reports<\/a> that TEPCO plans to send in workers on monday in order to measure dose rates within the building. Seems strange that they would send in people when they have already used robots once for that purpose.<\/p>\n

A longer video clip of the number 4 spent fuel pool can be seen over at Atomic Power Review<\/a>. It doesn’t appear to be very damaged.<\/p>\n

The big news of the week is that the prime minister of Japan has asked Chubu electric<\/a> to shut down its Hamaoka nuclear power plant. Hamaoka has 3 operational nuclear power plants, all of them quite new. Started at 1987, 1993 and 2004. The newest one is a ABWR and would presumably have state of the art eartquake protection. The reason for the prime ministers request is a estimate that the site \u00a0has a high probability to be hit by a 8.0 earthquake within 30 years. If the reactors indeed can not handle such a quake then the closure request is rational. But it does smell a bit like political posturing at this point. There is no legal precedence for such a situation and it is not clear if Chubu electric has to obey the request.<\/p>\n

 <\/p>\n

\"\"<\/a>\"\"<\/a><\/p>\n

\"\"<\/a>\"\"<\/a><\/p>\n

\"\"<\/a>\"\"<\/a><\/p>\n

 <\/p>\n

Links(English)<\/strong>
\nWNN\u00a0Filters for Fukushima Daiichi 1<\/a><\/p>\n

Blogs(English)<\/strong>
\nAtomic Power Review\u00a0Japan updates: Fukushima Daiichi, Hamaoka<\/a>
\nNEI\u00a0NEI Weekly Update on Fukushima Daiichi \u2013 5\/6\/1<\/a><\/p>\n

Blogs(Swedish) <\/strong>
\nEffekt\u00a0Monbiot brottas med sig sj\u00e4lv<\/a>
\nGenusnytt\u00a0En KARL ska v\u00e4l t\u00e5la lite str\u00e5lning…<\/a>
\nForskarbloggen\u00a0Hur m\u00e5nga d\u00f6da efter Tjernobyl?<\/a>
\ninas insikter\u00a0Tjernobyl idag \/ Fukushima imorgon?<\/a>
\nBegrundat och Plitat\u00a0Cesium och Jod verkar ge spikes i Fukushima n\u00e4r man gl\u00e4ntar p\u00e5 d\u00f6rren …<\/a><\/p>\n

\/Johan<\/p>\n","protected":false},"excerpt":{"rendered":"

Another week has passed and more steps have been taken to get the situation under control. Lets start with the usual reactor status table \u00a0made…<\/p>\n

Continue readingDay 58: Dose rates climbing in the number 2 wetwell<\/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":[57,433,1],"tags":[490,109,542,690,5,246,541],"_links":{"self":[{"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/posts\/2694"}],"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=2694"}],"version-history":[{"count":8,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/posts\/2694\/revisions"}],"predecessor-version":[{"id":7177,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/posts\/2694\/revisions\/7177"}],"wp:attachment":[{"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/media?parent=2694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/categories?post=2694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nuclearpoweryesplease.org\/blog\/wp-json\/wp\/v2\/tags?post=2694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}