Following up this article..[Reactor4] Photos and videos to take out the new fuel assemblies
Actual Fukushima worker Happy11311 commented they measured 2~3 mSv/h from the taken new fuel assemblies of SFP4, which is about 100 times higher than usual.
![[Reactor4] Taken fuel assemblies were 100 times more radioactive than normal](https://i0.wp.com/fukushima-diary.com/wp-content/uploads/2012/07/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88%EF%BC%882012-07-19-14.24.33%EF%BC%89-450x643.png?resize=450%2C643 "[Reactor4] Taken fuel assemblies were 100 times more radioactive than normal")
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(Happy11311)
It took 2 days to take out the fuel assemblies from 7/18 to 7/19. I heard the radiation level was 2~3 mSv/h on surface of fuel assemblies. It is not so different from what I expected. They decontaminated them only by rinsing and wiping, but it could be lower if they decontaminated them more carefully.
(Question)
200 ~ 300mREM/hr is quite high. The radiation level of normal new fuel assembly is only 1/100 of that ?
(Happy11311)
According to Tepco’s official announcement, it was 50μSv/h after decontamination. It was 2mSv/h just after taken out. The reason why the radiation level was so high is they were cutting shroud on DSP side before 311 [Link], highly radioactive chips can be attached. I don’t think they are activated.
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Iori Mochizuki