Tag "suppression chamber"

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Tepco to start nitrogen gas injection into reactor2 for the first time, “Not knowing the hydrogen gas concentration”

Tepco is going to inject nitrogen gas into reactor2 suppression chamber as a test. They need to keep the hydrogen gas concentration lower than 2% or it may cause hydrogen

Core removing struggle

Tepco to restart nitrogen gas injection into reactor1

According to Tepco, they are going to restart the nitrogen gas injection into the suppression chamber of reactor1 on 5/8/2013. 6~7m3/h will be injected in order to “push out the

Contaminated water crisis

Tepco plans to transfer contaminated water to suppression pool of reactor5 and 6 in emergency

As to the major leakage of highly contaminated water, Tepco is planning to transfer 23,600 tones of water to the tanks. However, those tanks don’t exist yet. Because they have

Core removing struggle Plant hazard

Tepco “No major damage was found in torus room of reactor2″

From 4/11 to 4/12/2013, Tepco conducted the torus room investigation of reactor2. They reported no major damage was found in torus room. However, the water temperature was still higher than

Core removing struggle

Tepco to restart nitrogen injection to reactor1, “The volume of gas is 40% more than last time”

According to Tepco, they are going to restart nitrogen injection into the suppression chamber of reactor1. 6~7m3/h will be injected in order to “push out the retained hydrogen gas” and

Core removing struggle

The purpose of nitrogen injection to reactor1 is “to confirm the impact of the radiolysis of water inside the PCV”

On 2/25/2013, Fukushima Diary reported Tepco was going to restart the nitrogen gas injection into PCV of reactor1. [URL 1] On 2/26/2013, Tepco reported the purpose is to confirm the

Core removing struggle

Tepco to restart nitrogen gas injection into reactor1 again

From 2/26/2013, Tepco is going to restart injecting nitrogen gas into S/C of reactor1. (5m3/h) S/C is a part of PCV. If the hydrogen gas density goes over 2%, there

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Fukushima worker “Human worker can’t get into torus room of reactor1, needs underwater vehicle”

On 2/20/2013, Tepco investigated inside of the torus room of reactor1 and they measured 920 mSv/h near the S/C. [URL 1] Actual Fukushima worker Happy11311 tweeted the rest of the

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Photos, videos and other details about reactor1 torus room investigation

On 2/20/2013, Tepco investigated inside of the torus room of reactor1. (cf, 920 mSv/h from the basement floor of reactor1, “Is fractured fuel debris in S/C ?” [URL]) They released

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920 mSv/h from the basement floor of reactor1, “Is fractured fuel debris in S/C ?”

On 2/20/2013, Tepco investigated inside of torus room of reactor1. [URL 1] Torus room is where the facility called S/C (suppression chamber) is located. S/C is a part of the