{"id":7450,"date":"2017-02-03T13:22:58","date_gmt":"2017-02-03T12:22:58","guid":{"rendered":"http:\/\/www.theoillamp.co.uk\/?p=7450"},"modified":"2017-02-03T13:22:58","modified_gmt":"2017-02-03T12:22:58","slug":"one-thing-learnt-week-fukushima-radiation-levels-hit-new-high","status":"publish","type":"post","link":"https:\/\/www.theoillamp.co.uk\/?p=7450","title":{"rendered":"One thing we have learnt this week – Fukushima radiation levels hit new high"},"content":{"rendered":"

\"\"<\/a>Fukushima radiation levels have hit a new high this week and boy is it a new high.\u00a0 The problem with radiation level measurements are there are so many different units.\u00a0 Some measure the physical dose of radiation an others the effective biological dose.\u00a0 To make it more confusing units have changed over the years to SI (systeme internationale) units.\u00a0 As someone who has done radiation training even I find it confusing.<\/p>\n

The usual accepted dose unit is the sievert<\/span>.\u00a0 This is a measure of the effective biological dose.\u00a0 Usually its expressed in millisieverts (mSv) since the sievert is regarded as too large.\u00a0 1 mSv is an energy dose delivered to 1 gramme of living tissue.\u00a0 The annual average dose is 2.4mSv from natural sources but over 6 from one computed tomography (CT) scan.\u00a0 In the US workers are allowed a dose of 50mSv a year, conveniently measured using badges with film inside (I’ve worn one of these).\u00a0 At\u00a0Fukushima the limit was raised to 250mSv for workers.\u00a0 To put this in perspective 1sievert (1000mSv) is enough to cause sickness 5 and 10sieverts are enough to kill you although over different time periods (months and weeks respectively). \u00a0 <\/span><\/p>\n

The measured dose at the plant this week was 530<\/strong>sieverts<\/strong>.\u00a0 I’ll leave it to readers imagination about the speed that these radiation levels will kill you but suffice to say it does a robot in within 2 hours.\u00a0 This week there was also some “good news” from the plant in that melted fuel had been located.\u00a0 This is good news since they know where it is.\u00a0 The problem is with such high levels of radiation cleanup is going to be much much harder.\u00a0 Costs of cleanup are running at \u00a3150 billion pounds but looks like a considerable underestimate.<\/span><\/p>\n

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

Fukushima radiation levels have hit a new high this week and boy is it a new high.\u00a0 The problem with radiation level measurements are there are so many different units.\u00a0 Some measure the physical dose of radiation an others the … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[25,17],"tags":[49],"class_list":["post-7450","post","type-post","status-publish","format-standard","hentry","category-nuclear","category-one-thing-we-have-learnt-this-week","tag-nuclear-power"],"yoast_head":"\nOne thing we have learnt this week - Fukushima radiation levels hit new high - The oil lamp - shining God's light on peak oil<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.theoillamp.co.uk\/?p=7450\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.theoillamp.co.uk\/?p=7450\",\"url\":\"https:\/\/www.theoillamp.co.uk\/?p=7450\",\"name\":\"One thing we have learnt this week - 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