Reactor No. 2 temp exceeded 400°C —Tepco: "device broken" — Fallout INCREASE measured [View all]
Monday, February 13, 2012
TEPCO Evening Press Conference 2/13/2012: Reactor 2 RPV Thermocouple Is Broken, Matsumoto Says
...Q: Who decided that the thermocouple was broken? Was the manufacturer consulted?
A: TEPCO decided. We have experience in maintenance of the thermocouple. (Matsumoto sounds very testy.)
Q: Is there a possibility of a thermocouple showing temperature lower than what really is and therefore it is broken?
A: If this thermocouple were correct, there would be other thermocouples that would show higher temperature. The other temperatures are trending down. So we think this particular thermocouple is broken.
Q: The temperature rise in early February - was it related to the instrument failure now?
A: We think so. But we didn't know at that time whether it was actually a rise in temperature or the instrument failure. The temperature did go down after increasing the water injection.
Q: How reliable is it to judge "recriticality" by xenon-135?
A: We think it is a reliable indicator.
Q: When was 342.2 degrees Celsius recorded?
A: We finished the testing at 2:54PM. So it must be between that time and 3PM. We'll have to check.
Q: How high did the temperature go? (looking at the graph that was provided)
A: It went overscale, so the graph shows temperatures like that [over 400 degrees Celsius].
http://ex-skf.blogspot.com/2012/02/tepco-evening-press-conference-2132012.html
MEANWHILE...
Fall-out intensively increased in Fukushima
Posted by Mochizuki on February 13th, 2012 · 4 Comments
While reactor2 was being heated, fall-out level in Fukushima intensively increased.
Until 9:00 AM of 2/11/2012,
Cesium 134 : 4.45 MBq/km2
Cesium 137 : 6.46 MBq/km2
However, 9:00 AM 2/11/2012 ~ 9:00 AM 2/12/2012,
Cesium 134 : 98.2 MBq/km2
Cesium 137 : 139 MBq/km2
http://fukushima-diary.com/2012/02/fall-out-intensively-increased-in-fukushima/
= new reply since forum marked as read