There’s something called a PNO out, a preliminary notice of occurrence, and the NRC has said that the normal shutdown cooling and the fuel pool cooling were both lost at Oyster Creek and also that there was a loss of offsite power.
So what that means is the nuclear fuel pool started to heat up and Oyster Creek started to bring in some diesel fire pumps, apparently they got the situation rectified before turning the pumps. They were in a position where they were bringing in diesel fire pumps in order to keep the nuclear fuel pool cool because of all the problems they were having as a result of Sandy.
Marco Kaltofen, PE explains how citizens scientists can properly, collect, document, package and ship radiation samples. In this video, he also demonstrates how he analyzes radioactive samples in his lab.
U.S. expert appalled by Tepco’s attitude over ‘sleeping dragon’ risk
KYOTO — The risk of a fire starting in reactor 4′s spent-fuel pool at the Fukushima No. 1 plant continues to alarm scientists and government officials around the world, prompting a leading U.S. nuclear expert to urge Japan to tap global expertise to avert a catastrophe.
Caldicott: If you put concrete on it, you know it’s going to keep going down into the water table.
Gundersen: Right.
Caldicott: And you know it’s going to keep contaminating the Pacific Ocean for the rest of time.
Gundersen: Right. So the solution — there is no good solution — but the solution would be to bore holes underneath and constantly pull water out from under the buildings.
[...]
At 23:00 in
Caldicott: You are sacrificing the Pacific by leaving this stuff there for the rest of time, which will leak and drain consistently into the Pacific.
Gundersen: You’re right. It needs to be constantly pumped out
Pu came from the damaged fuel rods, obviously. The question is whether it was the damaged rods inside U1/2/3 reactors or whether it was the U3 spent fuel pool. Given U1/2/3 had a containment around the cores (even if damaged), this data leads me to continue to believe that the U3 SFP detonation is the most likely location for the release.
When asked if the plutonium could have been transported by smoke from the burning fuel rods inside the reactors, Gundersen replies:
Burning is oxidation, so U or Pu combines with oxygen to create U oxide… just like Carbon combines with oxygen to make CO2…. small micron size particles….. I think the Pu at Fuku is raw, unoxidized, blown out, not burned
Fairewinds Associates was sent a leaked Southern California Edison email informing San Onofre employees it is against company policy to leak documents to Fairewinds.
Title: Shhh… don’t tell!
Source: Fairewinds Energy Education
Author: Patrick’s Blog
Fairewinds Associates was sent a leaked Southern California Edison email informing San Onofre employees it is against company policy to leak documents to Fairewinds.
Subject: Fw: CLARIFICATION REGARDING RECENT NEWS COVERAGE OF OUR PLANT STATUSSubject: CLARIFICATION REGARDING RECENT NEWS COVERAGE OF OUR PLANT STATUS
This week, Dr. Caldicott has a new conversation with nuclear engineer Arnold Gundersen about the ongoing nuclear disaster at the Fukushima plant and its effects on Japan and the rest of the world. [...]
At ~15:00 in
Arnold Gundersen, Nuclear Engineer: Unit 3 had 30 bundles of MOX fuel… All the reactors have plutonium in them… Uranium-238 becomes plutonium-239 when it absorbs a neutron… There was close to a ton of plutonium in each of the reactors… scattered throughout the fuel… A ton of plutonium in each reactor… you and I know how dangerous plutonium can be… makes the cleanup that much more difficult.