Tag "RPV"

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Core removing struggle Plant hazard

Tepco failed in installing thermometers into reactor2, “4 fiberscopes all stuck in the pipe”

In order to evaluate the feasibility of investigating inside of reactor2 and also to install new thermometer, Tepco attempted inserting fiberscopes to inspect the soundness of TIP guide pipe but

Core removing struggle Plant hazard

Reactor2 temperature jumped up by 120℃ within 12 hours

The temperature of reactor2 is almost reaching 265℃. The thermometer attached on the upper part of RPV2 recorded the rapid increase of temperature from 143.4℃ to 262.3℃, when was from

Core removing struggle Plant hazard

The “broken” thermometer is indicating temperature reaching almost 250℃ in reactor2

Two thermometers of reactor2 (RPV) have been indicating temperature increase since last December. Tepco labelled them as “broken”, but the indicated temperature started increasing again. Two thermometers are showing the

Core removing struggle Plant hazard

Tepco can’t disclose the circuit diagram of the thermometer in reactor2 for saving “intellectual property of Toshiba”

In reactor2, two thermometers have been showing the significant increase of temperature. Tepco defined they were “broken”, but the indicated temperatures are showing the relationship with the volume of coolant

Core removing struggle Plant hazard

Reactor2 temperature decreasing since the volume of injection water was increased

Two of the thermometers of reactor2 have been showing the increase of temperature since last December. On 1/7/2013, Tepco labelled the 2 thermometers as “broken”. However, they kept on indicating

Core removing struggle

Reactor2 pressure had a huge drop in October. 2012

According to Tepco’s plant parameter, reactor2 pressure had a huge drop last October. Because both of the pressures in PCV and RPV dropped at the same timing, the indicators are

Core removing struggle Plant hazard

Issued thermometers in reactor2 indicate 208℃ and 134℃

There are 2 thermometers indicating the rapid increase of temperature in reactor2. After Tepco labelled them as “Broken” they indicated the drop of temperature but they started indicating the increase

Core removing struggle Plant hazard

Tepco temporarily stopped updating the plant parameters of reactor2 including the temperature data

In reactor2, two thermometers are still indicating the increasing temperature in RPV even after Tepco declared they were broken. [Link1] In the afternoon of 1/16/2013 (JST), Tepco stopped updating the

Core removing struggle Plant hazard

2 thermometers of reactor2 started indicating increasing temperature again

On 1/7/2013, Tepco labelled the 2 thermometers as “broken”. [Link1] These thermometers were indicating the increasing temperature since last December. From 1/8/2013 to 1/9/2013, the next day when Tepco announced

Core removing struggle Plant hazard

Tepco, “The reason why a lot of thermometers are broken in reactor2 is its individuality”

2 thermometers were indicating the rapid increase of the temperature in reactor2, but Tepco labelled them as “broken”. (cf, Having ignored the increasing heat indicated, Tepco cancelled measuring radiation level