Tag "endoscope"

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Core removing struggle

[Reactor3] 1st floor : 16℃, 2nd floor : 9℃ / The deeper you go, the warmer it gets at 4m from the primary vessel

                Following up this article.. [Leakage of reactor3 coolant water] Tepco “Can’t touch anything due to the high level of radiation” [URL]  

Core removing struggle

Tepco had an endoscope stuck in PCV of reactor2, “Cut and drop it into PCV”

On 3/19/2013, Fukushima Diary reported they measured 1Sv in PCV of reactor2. (cf, 1 Sv/h in PCV of reactor2, “reaches the fatal dose in 7 hours” [URL]) During this survey,

Core removing struggle

[Unanticipated] Tepco failed in investigating the torus room of reactor2 “Different from the map”

From 1/27 to 1/28/2013, Tepco opened a hole (Diameter 300) on the top of the torus room of reactor2. The purpose was to investigate inside of the torus room with

Core removing struggle

11.1Sv/h in penetration tip of reactor1, “The higher it goes in PCV, the higher the radiation level goes.”

  On 10/10/2012, Tepco investigated the inside of PCV in reactor1. The water level was 2.8m from the bottom of PCV1. The highest dose was 11.1 Sv/h, which is enough

Core removing struggle

Lead plate of 7.5cm thickness was lost in PCV of reactor1

On 9/26, Tepco punched an access hole to PCV1 to investigate the inside by an endoscope. (cf. Tepco punched an access hole to PCV of reactor1) From this investigation, they

Core removing struggle

[Reactor1] Dosemeter indicated 10.3Sv/h and spiked to 1,000,000 Sv/h to be out of order

Following up this article..You can’t work longer than 30 mins in reactor1 because of too much radiation The detailed data of the endoscope operation [LINK] was published. The dose meter

Core removing struggle

Endoscope operation at reactor1 “Suppression chamber is broken, flooded water is hotter than PCV”

Related to this article..Tepco is planning the first endoscope operation to reactor1 On 6/26/2012, Tepco conducted endoscope operation in torus room of reactor1. Endoscope was inserted from the through-hole (5cm

Core removing struggle

Tepco is planning the first endoscope operation to reactor1

Related to this article..Water level was only 60cm from the bottom in reactor2 Tepco is planning the first endoscope operation to reactor1 announced in the daily press conference on 5/28/2012.

Core removing struggle

73Sv/h in container vessel

During the endoscope operation of 3/26/2012, Tepco measured the radiation level of inside of container vessel. Tepco published the data the next day, 3/27/2012. It was measured at 8 points,

Core removing struggle Cover-ups Plant hazard

Fukushima worker assumes melted fuel has gone into suppression chamber

Following up this article..Water level was only 60cm from the bottom in reactor2 The water level turned out to be only 60cm. Where is the fuel ? Is it in