“Are people going to drop dead?” US officials surprised workers still at Fukushima after assessment No. 2 went ex-vessel and 400 milliSv/h dose measured

Published: March 6th, 2012 at 1:35 pm ET
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Japan’s Fukushima Daiichi ET Audio File
Nuclear Regulatory Commission
March 15, 2011

DAVID: And the notion that Unit 2 is X vessel is something that is the the assessment of Jim Trapp, who’s in the office talking to one NISA engineer, so that, that’s their best estimate of what the situation is. But we don’t have anything from either Tepco or NISA that, that verifies that information.

BRIAN McDERMOTT [Director of Division of Preparedness and Response]: When they say that the core is X vessel, what kind of rad readings are they getting near the site?

DAVID: I don’t have any updates over the last, roughly six or seven hours. But six or seven hours ago, the site boundary in the vicinity of Unit 2 and 3 was 3 to rem per hour, and around Unit 4, was 10 rem per hour.

MALE PARTICIPANT: And at one point, there was a 40 rem.

DAVID: Yeah. There was a media report of a 40-rem dose measured somewhere near the plant.

BRIAN McDERMOTT: Okay. Wow. And they still have people there?

DAN DORMAN: There are 50 people remaining on site. Everybody else has been evacuated. Now I don’t know if that 50 includes the 11 that were injured in the Unit 3 explosion or sent after that.

BRIAN McDERMOTT: Right.

DAN DORMAN: One of our, of our lingering questions is, is how many people are there monitoring this and trying to, to cool things, and for how long?

BRIAN McDERMOTT: Right, with those kind of dose rates.

[...]

MALE PARTICIPANT: No. He doesn’t have anything else.

MALE PARTICIPANT: No, we’re just trying to get a ballpark. Are we talking about, are people going to drop dead? Are they going to — it’s just — you know, how hot is it? [...]

See EXSKF’s post from yesterday: Dry Vent of Reactor 2 May Have Released Largest Amount of Radioactive Materials, Not Explosions:

The paper by a Tokyo University researcher that was finally published [...]

It shows the spacial dose of radiation at the front gate of Fukushima I Nuke Plant and the timeline of events at the plant in March. The largest spike seems to be around or after 12AM on March 15, and the label on the spike says “Dry vent at reactor no.2″. [...]

SOURCE: K. Shozugawa et al.

Published: March 6th, 2012 at 1:35 pm ET
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  4. Asahi: 220 milliSv/hr on TOP level of Unit No. 2 — ‘Puddles’ on floor of reactor ‘believed’ not to be from accident (PHOTO) March 4, 2012
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