http://fukushima-diary.com/2012/09/coolant-water-is-leaking-to-the-next-turbine-building-of-reactor1/
Coolant water is leaking to the next turbine building of reactor1
Posted by Mochizuki on September 27th, 2012 · 2 Comments
In the roadmap that Tepco released on 9/24/2012, Tepco reported coolant water injected into PCV and RPV is leaking from the North-East side of the reactor building through the access hole.
The leaked contaminated water is presumed to flow into the next turbine building.
The leaked contaminated water is presumed to flow into the next turbine building.
Tepco presumes injected coolant water is leaking from the crippled PCV and RPV to flow out of the reactor building. In order to identify the leaking point, they attempted to measure the water levels of four corners of the basement floor in reactor building, where torus room is located on 9/20/2012.
Because of the high level of radiation, they only measured it at the two corners of the floor, North-East corner and North-West corner of the floor. From the investigation, they found the water level is 50cm deeper in North-West corner to suggest the water is leaking out of the reactor building from North-East corner.
From the water retaining in North-East corner, they measured 4.1E+10 Bq/m3 of Cs-134 and 7.4E+10 Bq/m3 of Cs-137.
Because of the high level of radiation, they only measured it at the two corners of the floor, North-East corner and North-West corner of the floor. From the investigation, they found the water level is 50cm deeper in North-West corner to suggest the water is leaking out of the reactor building from North-East corner.
From the water retaining in North-East corner, they measured 4.1E+10 Bq/m3 of Cs-134 and 7.4E+10 Bq/m3 of Cs-137.
and.....
http://fukushima-diary.com/2012/09/tepco-punched-an-access-hole-to-pcv-of-reactor1/
Tepco punched an access hole to PCV of reactor1
Posted by Mochizuki on September 27th, 2012 · No Comments
On 9/26/2012, Fukushima diary reported the rapidly increasing temperature in PCV1. (cf. PCV temperature is rapidly increasing in reactor1, “10℃ in 2 days”)
On 9/27/2012, Tepco reported they punched an access hole to PCV of reactor1.
It is not clear if it affected the increasing temperature, but it’s not starting to decrease yet.
and.......
http://ex-skf.blogspot.com/2012/09/video-of-inside-smokesteam-filled.html
THURSDAY, SEPTEMBER 27, 2012
Video of Inside the Smoke/Steam-Filled Reactor 1 Containment Vessel at #Fukushima I Nuke Plant
TEPCO released the 40-minute video on September 27, 2012, with no explanation of when the video was taken, or how much radiation exposure the workers manipulating the drill and the camera got. (The workers had been practicing on the mockup.)
The video starts after a 130-mm diameter hole was drilledAt first, nothing seems to be happening, until 50 seconds into the video when the aperture of the ball valve opens. What you see at the end of the hole is the inside of the Reactor 1 Containment Vessel. The camera gets inserted at about 2 minutes into the video.
The inside seems to be filled with whitish smoke or steam, though it doesn't look dripping wet like in Reactor 2's Containment Vessel. At about 4 minutes, some sort of structure is discernible. At 5 minutes, a rust-colored wall starts to appear on the left side of the screen.
At about 18 minutes, the camera focuses better, and you start to see what looks like metal and concrete(? it may be mangled metal) debris.
What destroyed the inside like this? Earthquake? Explosion?
According to TEPCO's monthly progress report as of September 24, 2012 (page 24 of the PDF), workers from Hitachi-GE Nuclear Energy are doing the work. (Workers from Toshiba are doing the investigation of the Reactors 2 and 3 Containment Vessels.)
In June this year, TEPCO did the survey of the Reactor 1 torus room, where they found the radiation level just above the water surface to be over 10 sieverts/hour.
In June this year, TEPCO did the survey of the Reactor 1 torus room, where they found the radiation level just above the water surface to be over 10 sieverts/hour.
http://fukushima-diary.com/2012/09/pcv-temperature-is-rapidly-increasing-in-reactor1-10%E2%84%83-in-2-days/
PCV temperature is rapidly increasing in reactor1, “10℃ in 2 days”
Posted by Mochizuki on September 26th, 2012 · No Comments
Thermometers in reactor1 PCV are indicating the rapidly increasing temperature.
It was 55.9℃ at 5AM of 9/24, and it’s 65.8℃ at 5AM of 9/26/2012.
From 9/24/2012 to 9/26, the temperature picked up by 10℃.
The Fukushima worker, Happy11311 tweeted like this below,
<Translate>
Now they are doing the construction to install an alternative thermometer to reactor2, and also investigating inside of PCV of reactor1. Speaking of which, they say they opened a through hole on PCV1. Finally they are going to see inside of PCV1.
and.....
and.....
The SimplyInfo research team provides a short analysis of the newly released underwater footage from inside the Unit 3 spent fuel pool at Fukushima Daiichi:
In the videos of the pool a couple of things of interest show up. One bent piece of steel may be a fuel assembly storage box. It is not fully confirmed since it is only partially visible in the video but it bears the same general shape and size to the other assembly boxes around it.[...]Other portions of the videos show either red paint that is wearing off or some sort of red rust or algae buildup. The steel pool wall is also covered is [sic] some sort of corrosion or buildup.
The photo on the right has a basic levels adjustment intended to give a more accurate representation of the wall’s appearance.
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