格納容器内に充満していた粉塵

18:32 Jul 20, 2015
Japanese to English translations [PRO]
Tech/Engineering - Nuclear Eng/Sci / 福島第一原発
Japanese term or phrase: 格納容器内に充満していた粉塵
福島第一原発1号機と3号機が爆発に至るまでの説明の中の一文です。

ベントが行われたが、格納容器内に充満していた水素、可燃性ガス、粉塵が排気ルートである原子炉建屋内3階のフィルター集中し、粉塵で目詰まりを起こす。

Thanks in advance.
Y. K.
Local time: 10:25


Summary of answers provided
4hydrogen, explosive gas and dust, which overflowed containment vessel
ジマ
3fine particles which were filled inside the containment vessel
Yuko Fujita
3(Radioactive) particles in the containment atmosphere
T.B.
Summary of reference entries provided
FYI
cinefil

Discussion entries: 2





  

Answers


2 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5
fine particles which were filled inside the containment vessel


Explanation:
http://ejje.weblio.jp/content/粉塵

(nuclear reactor) containment vessel or CV


    https://books.google.com/books?id=lZSjBQAAQBAJ&pg=PA456&lpg=PA456&dq=fine+particles+filled+in+the+containment+vessel&source=bl&ots=MlaAr94Sg
    Reference: http://www.world-nuclear-news.org/RS-Robot-enters-unit-1-con...
Yuko Fujita
United States
Native speaker of: Native in JapaneseJapanese
PRO pts in category: 2
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3 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5
(Radioactive) particles in the containment atmosphere


Explanation:
ここで言う粉塵とは次のリンクで説明されている airborne particulate matter のことです。一般的には particules と表現すれば十分だと思います。
https://en.wikipedia.org/wiki/Airborne_particulate_radioacti...

補足的情報ですが、原子炉のcontainment ventilation system にはこの粉塵が大気に放出するのを防ぐ high-efficiency particulate air (HEPA) filter が装備されていると言われています。

次のリンクに参考になる記述(以下に引用)があります。
http://allthingsnuclear.org/containment-venting-is-cooling-b...
“Some emergency situations, however, require venting directly from the drywell to reduce the pressure. This also happened at Fukushima. If the RHR system were operating and could spray water into the drywell, this water would help remove radioactive particles and gases from the containment atmosphere, preventing this material from being released to the environment during venting.”

T.B.
United States
Local time: 18:25
Native speaker of: Native in JapaneseJapanese
PRO pts in category: 8
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12 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
格納容器内に充満していた水素、可燃性ガス、粉塵
hydrogen, explosive gas and dust, which overflowed containment vessel


Explanation:
https://www.nsr.go.jp/archive/nisa/word/6/0130.html


    https://www.nsr.go.jp/archive/nisa/word/6/0130.html
ジマ
Japan
Native speaker of: Native in EnglishEnglish, Native in JapaneseJapanese
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Reference comments


4 hrs
Reference: FYI

Reference information:
http://www.nei.org/News-Media/News/News-Archives/Vents-and-F...

cinefil
Japan
Specializes in field
Native speaker of: Native in JapaneseJapanese
PRO pts in category: 16
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