Mudcat Café message #3195908 The Mudcat Café TM
Thread #136314   Message #3195908
Posted By: Charley Noble
26-Jul-11 - 01:04 PM
Thread Name: BS: Japan Nuclear plant disaster, 2011
Subject: RE: BS: Japan Nuclear plant disaster, 2011
Here's an update from July 19 (NIRS) which provides a sobering summary of what's been achieved in terms of stabilizing conditions at the Fukushima-1 nuclear complex:

Meanwhile, Tepco says it has achieved "stable cooling" of all of the reactors at the site. This might sound like good news until it is realized that Tepco does not mean the reactors are at cold shutdown. In fact, all 3 reactors with fuel in them remain above the boiling point of 100 degrees Centigrade, meaning that water continues to boil off and radiation continues to be released. Cold shutdown—bringing the temperatures below 100 degrees—is still not expected before January 2012. What Tepco really means is that it has more or less successfully set up a system for water to be recirculated through the reactors, so that constant water from outside is no longer needed. However, the recirculation system has been plagued with problems from the beginning and continues to not work at desired capacity.

That is not the case for the Unit 4 fuel pool, which continues to receive water from outside. Temperature in the pool is said to be below boiling, at 80 degrees Centigrade.

Have a nice day!
Charley Noble