Tag "PCV"

Back to homepage
Core removing struggle

Tepco punched an access hole to PCV of reactor1

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

Core removing struggle

Tepco developing remote controlling robots, wall crawler, airship, RPV diver, etc..

On 9/24/2012, R&D department of Tepco released the latest report about remote technique to invest Fukushima plant. Tepco can’t investigate the crippled Fukushima plant with the existing technology. They are

Core removing struggle Plant hazard

PCV temperature is rapidly increasing in reactor1, “10℃ in 2 days”

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

Core removing struggle

Tepco’s emergency email, “Duct of gas monitoring system got a hole in reactor2″

Crippled Fukushima plant is having problems continuously. The similar kind of ducts may have the same problems at other locations too. On 9/9/2012, Tepco sent emergency emails to press. Around

Core removing struggle Plant hazard

Intermittent increase of Krypton-85 to suggest on-going nuclear fission in reactor1

Intermittent increase of Krypton-85 was observed in reactor1. Tepco suddenly reported they examined the density of krypton-85 and hydrogen gas. This was the first time for them to announce Krypton-85

Core removing struggle Plant hazard

[Reactor2] Tepco is having a difficulty to install a new RPV thermometer

Every time Tepco measured extreme change of PCV temperature, they concluded that the thermometer was out of order historically. They have few sound thermometers left at this moment, they are

Core removing struggle

[Reactor3] Visual data sent from dead survey robot

Following up this article..Survey robot died in reactor3 Tepco released detailed data collected by the dead survey robot in reactor3.             ↓ Southeast side manhole  

Contaminated water crisis Core removing struggle Plant hazard

Possible recriticality in reactor2

  Weekly Asahi reported they obtained the email leaked from Tepco. It was sent from a staff of engineering devision to his coworker and a nuclear expert. It warned the

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

Water level is only 40cm from the bottom in reactor1

  Related to this article..Water level was only 60cm from the bottom in reactor2 It was 60cm in reactor2, but it is worse in reactor1. Japan nuclear energy safety organization