Japan Times: Fukushima workers were concerned pressure was escaping from cracks caused by 3/11 quake — Tepco refuses to investigate inside Reactor 1 for quake damage

Published: July 27th, 2012 at 11:54 am ET
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Title: Fukushima probes leave questions
Source: The Japan Times Online
Author: By KAZUAKI NAGATA
Date: Friday, July 27, 2012

Why did engineers turn off an isolation condenser [IC] at reactor 1?

The IC is an emergency cooling system.

Shortly after the quake hit the plant, engineers used the IC to cool the reactor core and turned it on and off for three times.

The government panel’s report said the engineers turned off the IC because they were trying to control the speed of the temperature drop inside the reactor no faster than 55 degrees per hour, which is stated in the manual for the IC.

But the Diet panel said the engineers told the panel that they wanted to see how the pressure level would change because they were concerned if the pressure was escaping from some cracks caused by the quake.

“It seems Tepco does not admit that the workers turned off the IC to check the leakage because it will bring up the unfavorable matter of the possibility of quake damage,” said the Diet panel, adding that it is also conceivable that the pipeline for the IC might have been damaged by the quake.

The Diet panel asked Tepco if it could send investigators inside the reactor 1 building to view the quake damage as much as possible.

But Tepco declined because the utility did not want its employees to be exposed with more radiation more than was necessary.

Published: July 27th, 2012 at 11:54 am ET
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6 comments

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6 comments to Japan Times: Fukushima workers were concerned pressure was escaping from cracks caused by 3/11 quake — Tepco refuses to investigate inside Reactor 1 for quake damage

  • razzz razzz

    TEPCO has the whole nuclear industry riding on its back. TEPCO has to show the world that Fukushima was a one time event that happened mainly due to power outages and high water. If it is shown that nuke plants couldn't withstand the designed quake stress limits then all nuclear facilities come into question.

    In the meantime, overlooked is how many reactor meltdowns can mother earth endure.


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  • MaidenHeaven MaidenHeaven

    Why ASK if they can investigate? There should be NO option. The government can have experts from around the world in a heartbeat that would go into that reactor. They already have those senior Japanese engineers that have offered. And the military to escort them there if necessary. I'd be rolling in there in tanks if needed.


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  • richard richard

    you're right MaidenHeaven, there should be NO option.

    but one problem is, nothing will probably survive going into reactor 1 to investigate. neither carbon or silicon devices will cope with the levels. two 'bots are down already.

    an aside question. considering it's 16 months since all this began, and the levels of exposure onsite workers must have received would be high, then is it fair to have no news on casualty or health effects by now?


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  • MoonlightEmpire MoonlightEmpire

    Re-posting a link that someone (thankyou) put on here with some amazing pictures.

    http://cryptome.org/2012-info/daiichi-12-02-05/daiichi-12-02-05.htm

    Note the dates of the pictures, because they change from one to the next. I've spent a few hours examining these photos and there are some interesting things.

    Relating to unit 1 bldg: If you zoom in on one of the pics with your browser, you can clearly see that the TENT over the unit 1 building has a large, ragged whole in it (near the bottom). I've never heard mention of this before. By the looks of the hole, I think rubble broke loose from the building AFTER the tent was put up. The rubble fell down between the building of the tent, hit the floor, and smashed it's way through the tent wall into the space between units 1 and 2. This means that at least some large chunnks of unit 1 have been unstable enough to fall. Doesn't this also mean that the tent is not serving it's function of limiting radiation releases? I heard arnie say a while back that at least one purpose of the tent was to give a vertical stack for the air to vent from, thus reducing worker exposure on the site. I'd say Tepco's pants fell down at unit 1 and they quickly covered their private parts…pulling up their stockings but tearing a run…

    In the end, we all know what Fukushima is, so let's all act appropriately and right some of these wrongs.

    Remember, electricity is not a necessity; it is a luxury item and nothing more…


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    • MoonlightEmpire MoonlightEmpire

      We can make a difference, and we can do it quickly. Up until recently, the electricity in my home was coming from Nuclear Power plants. I've now switched my energy provider to a non-nuclear company which I will utilize until I'm providing my own electricity.

      In the past three weeks I've also helped 7 other people I know do the same thing. I'm not stopping, it feels too good to make a difference like that.

      I believe that if the Nuclear industry no longer has a profitable amount of the public utilizing their "product", they will simply stop "manufacturing" that product (at least to some degree depending on how many people decide to no longer support the industry). I think that this type of action is beneficial because it should ensure that these plants are shut down in a safe and controlled manner. Remember, we want them shut down as soon as possible, but it must be done SAFELY. Dangerous things these are.

      Wishing you all well. Keep it up. Gain the satisfaction of your action.


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