Uploaded May 2019 | Updated September 2026, 1 week ago
Tepco's 3D modeling of the primary containment vessel (the enclosure within which the reactor core is located) of Unit 3 shows that its contents were blown to pieces. This is inconsistent with the received assumption that the explosion was a hydrogen explosion in the atmosphere of the secondary containment. It is, however, consistent with a ex- or in-vessel steam explosion.
Source: photo.tepco.co.jp/en/date/2018-e/201804-e/180426-02e.html
Report tepco.co.jp/en/nu/fukushima-np/handouts/2018/images/handouts_180426_03-e.pdf
Photographic evidence of extensive damage in Unit 3's PCV:
tepco.co.jp/en/nu/fukushima-np/handouts/2017/images/handouts_171130_03-e.pdf
and tepco.co.jp/en/nu/fukushima-np/handouts/2017/images/handouts_170721_01-e.pdf
Tepco's 3D modeling of the primary containment vessel (the enclosure within which the reactor core is located) of Unit 3 shows that its contents were blown to pieces. This is inconsistent with the received assumption that the explosion was a hydrogen explosion in the atmosphere of the secondary containment. It is, however, consistent with a ex- or in-vessel steam explosion.
Source: photo.tepco.co.jp/en/date/2018-e/201804-e/180426-02e.html
Report tepco.co.jp/en/nu/fukushima-np/handouts/2018/images/handouts_180426_03-e.pdf
Photographic evidence of extensive damage in Unit 3's PCV:
tepco.co.jp/en/nu/fukushima-np/handouts/2017/images/handouts_171130_03-e.pdf
and tepco.co.jp/en/nu/fukushima-np/handouts/2017/images/handouts_170721_01-e.pdf
