Tag "coolant"

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Contaminated water crisis Core removing struggle

[Video] Tepco identified a leaking part on reactor1 vessel / Pipes are rusted and starting deteriorated

  ↑ The leaking part on the pipe connected to reactor1 vessel     Following up this article.. [Video] Reactor1 confirmed leaking out the coolant water / 2.0 Sv/h [URL]

Column Contaminated water crisis Cover-ups Sea contamination

[Column] Tepco may be gaining time before press question % of the direct leakage of the coolant water to the sea

Everything started this Spring. Suddenly Tepco got panicking and tested around everywhere in the plant area. All the results showed high level of radiation. It showed the possibility of sea


Reactor6 temperature increasing after restarting coolant system, 27.6℃ → 28.0℃

Following up this article..Reactor 6 coolant system accidentally stopped / Tepco “can restart in 1 hour” → took 2 hours, reason not verified [URL] According to Tepco, the reactor6 temperature


Reactor 6 coolant system accidentally stopped / Tepco “can restart in 1 hour” → took 2 hours, reason not verified

According to Tepco, the coolant system stopped in reactor6 at 10:16 AM of 7/25/2013. Tepco was conducting the automatic starting test of emergency diesel generator, but it caused the suspension

Core removing struggle Cover-ups Plant hazard

Fukushima worker “Tepco needs to fill PCV with water to remove molten fuel but it’s leaking from somewhere unknown”

The former Fukushima worker Happy11311 commented on Twitter that Tepco is having the serious technical problem to remove the molten fuel from the reactors. He states it can’t be started

Spent Fuel Pools

Storm coming to JP for this weekend, the maximum instantaneous wind speed is 30m/s

At 14:27 of 4/5/2013, the coolant system of reactor3 SFP stopped for unverified reason. [URL] According to Japan Meteorological Agency, a strong storm is coming to Japan for 4/6 ~

Cover-ups Plant hazard Spent Fuel Pools

Murata ex JP ambassador, “Coolant system of reactor4 was broken 12/8~12/11, concrete base is terribly deteriorating.”

According to Mr. Murata, former Japanese ambassador in Switzerland, the coolant system of SFP of reactor4 was stopped from 12/8 to 12/11, and the concrete base is terribly damaged already.

Core removing struggle

Tepco reported they don’t know why nitrogen injection decreases the temperature of reactor1

According to the minutes of mid/long term Fukushima measures meeting held on 10/22/2012, Tepco is not sure about why nitrogen injection decreases the temperature of PCV in reactor1. Fukushima Diary


Tepco mishandled coolant water injection to reactor3 to increase by 20% suddenly, “touched a valve mistakenly”

According to Tepco, coolant water injection to reactor3 spiked up by 20% suddenly. WSJ reported it was because a nuclear worker touched a valve mistakenly when they took out the

Core removing struggle

[Column] Is Tepco injecting liquid nitrogen into reactor1 ?

<This is a column of my guess. Not an article with solid source.>   Since the end of September, Fukushima Diary has been reporting the repetitive increase of the temperature