NRC says Reactor No. 2 “burned continuously for several days” after meltdown — Hydrogen “ignited” (VIDEO)

Published: December 19th, 2011 at 6:21 am ET
By ENENews
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Published by: NRC
Published date: Nov 29, 2011
Description: An NRC reactor expert explains nuclear power and the March events at the Fukushima site in Japan [Emphasis Added]

Frederick (Rick) Hasselberg is a reactor engineer and incident response coordinator in NRC’s Office of Nuclear Security and Incident Response (NSIR). (SOURCE)

[...] With core melt down and containment failure, Fukushima Units 1, 2 and 3 were unable to prevent the uncontrolled release of radioactive material and hydrogen gas from the primary containments to the secondary containments.

In the secondary containments, hydrogen concentrations reached flammable and then (in the cases of Units 1 and 3) explosive concentrations. In Unit 2, hydrogen ignited before it could reach an explosive mixture but it burned continuously for several days.

The events at Fukushima Daiichi were tragic. On the International Nuclear Event Scale, the Fukushima accident rates as a seven – a major accident – based on the amount of radioactive material released to the environment. [...]

Tracking The Latest At The Fukushima Nuclear Plant, NPR, March 16, 2011:

Reactor No.2: A hydrogen explosion on March 15 damaged the reactor building and the pressure suppression chamber, causing the pressure inside the containment vessel to fluctuate. White smoke has been a regular occurrence from Reactor 2

Japan official: small amount of white smoke still at reactors, Reuters, March 22, 2011:

There was still a small amount of white smoke at the stricken Daiichi nuclear plant’s No. 2 reactor [...] the deputy-director general of Japan’s Nuclear and Industrial Safety Agency, said on Tuesday.

…DEVELOPING…

Published: December 19th, 2011 at 6:21 am ET
By ENENews
Email Article Email Article
31 comments





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