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quake

so why have a dry cask storage facility if they use 4 and 6?

@UKVal I saw a bit. heard it first too. scary. :(

oops... those temps are degree K then degree F

'There are fuel ponds near the top of all six reactor buildings at the plant, adjacent to the top of each reactor so that the fuel can be unloaded under water, when the top is off the reactor pressure vessel and it is flooded. The ponds hold some fresh fuel and some used fuel, pending its transfer to the central used/spent fuel storage on site. (There is some dry storage there to extend the site's capacity.) ' ambigious -- is that near each SFP or selected?

@elainekirk -ty - I was aware of the storage issue due to delays in opening the anticipated new site -- but I'm still puzzled why they had a facility elsewhere on site but retrned fuel, presumably after further cooling in the common SF, to casks in the reactor buildings P

elaine willl you pin that message I sent with the link? I still can't do it

@dean: Thanks, just what I was looking for.

Yes I am being thick this morning, need more coffee..they had dry casks in the reactor buildings?

The ultimate safety system inside and outside of every BWR are the numerous levels of physical shielding that both protect the reactor from the outside world and protect the outside world from the reactor.

There are five levels of shielding:
1.The fuel rods inside the reactor pressure vessel are coated in thick Zircaloy shielding;
2.The reactor pressure vessel itself is manufactured out of 6-inch-thick (150 mm) steel, with extremely high temperature, vibration, and corrosion resistant surgical stainless steel grade grade 316L plate on both the inside and outside;
3.The primary containment structure is made of steel 1 inch thick;
4.The secondary containment structure is made of steel-reinforced, pre-stressed concrete 1.2–2.4 meters (4–8 ft) thick.
5.The reactor building (the shield wall/missile shield) is also made of steel-reinforced, pre-stressed concrete 0.3 m to 1 m (1–3 feet) thick
en.wikipedia.org

I need a good app. Trying to go from EST, EDT JST and now an added IST, looking back at data, I am just getting exasperated!!! Help, I need an app!!

@elainekirk no IE 1800.7.9.14.8 or something:)

LOL

Tuesday, May 17, 2011

Aso volcano alert level raised to 2
Kyodo

KUMAMOTO — The Meteorological Agency on Monday raised the volcanic alert level for Mount Aso from 1 to 2, prompting local authorities in Kumamoto Prefecture to ban entry to areas within 1 km of the crater of Mount Naka, one of five peaks in the active volcano's central cone group.
search.japantimes.co.jp

so at that time there were 408 assemblies stored in 9 dry casks, each containing either 37 or 52 assemblies. The plan was to increase this by a further 11 casks. But this still doesn't explain why they didn't extend the dry cask storage facility on site but instead put the casks in #4 & 6.

@UKVal I believe they were trying to move the dry casks off site. To free up space in the "combined?" storage pool for more warm fuel. It takes a few years to get to dry cask stage.

wwp.greenwichmeantime.com

@RBeaner -true but their plans were delayed due to planning delays preparing the new facility. The qu is why use the reactors & not store elsewhere omn site?

@Nancy have we discovered the answer to the mystery about 4 that's been puzzling us all along?

@RBeaner -that's not the issue. We've been devating if there was something dodgey going on in 4. This might be it. Might.