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Contaminated water still troubles Fukushima plant

18 Comments
By MARI YAMAGUCHI

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18 Comments
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Incompetence and corruption still troubles Fukushima plant.

6 ( +7 / -1 )

Incompetence and corruption still troubles Japan. It's very regrettable

5 ( +6 / -1 )

...But yeah we got the Olympics so all is OK!

6 ( +6 / -0 )

Cripes, I hope this doesn't impede the reopening of the other nuclear plants, we need electric power!

But then we've gone through the past three years without nuclear power...

2 ( +2 / -0 )

Er... 'experimental' ice wall? After three years they are just starting to experiment with ideas? That's reassuring! I hope the ice wall doesn't melt when summer comes around.

And they will have developed the technology to remove the fuel by 2020? 2020 - the year when a whole bunch of visitors is destined to arrive for something special. What was it now?...

It doesn't sound confidence-inspiring at all, "Well, yer know, we'll kind of do a bit of this and we might..er..do a bit of that and..."

1 ( +2 / -1 )

Mix the water with jelly sugar and put it in large containers under the ground?! if there is a hole in the container the jelly does not come out! it is more safe!

see: Youtube "How to make jelly" -- http://youtu.be/eLijkt4rc2w

(But don't eat it!!)

0 ( +1 / -1 )

Having seen what the engineers and firefighters did to negate the negative effects of this N Disaster. I cry, so many people worked so hard to keep me and my family safe. They are heroes, knowingly working in an unstable environments. To be in support of N-Power is wrong. Economic worries are nothing when you think of the loss of life the continued stress and loss of families. What is the most important thing in your life? The economy? Or your family? If you have to think about it , then get help you are sick.

1 ( +3 / -2 )

But then we've gone through the past three years without nuclear power...

And all the money spent on importing extra coal, oil and natural gas has just had such a positive effect on the economy. Not to mention the extra sickness cause by burning more fossil fuels.

the year when a whole bunch of visitors is destined to arrive for something special. What was it now?...

And how many of those vistors will be visiting Fukushima power station?

-3 ( +2 / -5 )

Troubles. TROUBLES?

Three year olds now loay inside and rarely see the sun :( Troubled?

-1 ( +1 / -2 )

"The situation is under control." -- Abe Shinzo

0 ( +1 / -1 )

5mSv ? So can you also get a compensation for a unnecessary performed CT or Fluroscopy (up to 20 or 100mSv) ?

1 ( +1 / -0 )

Use reverse osmosis to cleanup water.

0 ( +0 / -0 )

Is the Ukraine trying to retrieve their melted core at Chernobyl???? No.... Well Imagine that...

2 ( +2 / -0 )

According to David Hess, a nuclear analyst at the World Nuclear Association, a 2013 scientific study estimated that 160,000 early mortalities had been prevented by the use of nuclear power in Japan ( as opposed to burning fossil fuels ), and he says, "Put simply, nuclear power has saved many Japanese lives."

Incredible! Well, then, let's start 'em up! Another major earthquake or tsunami will never happen, either that or the nuke plants will be able to withstand them! Yea!

0 ( +0 / -0 )

Incredible! Well, then, let's start 'em up! Another major earthquake or tsunami will never happen, either that or the nuke plants will be able to withstand them! Yea!

Well 4 of the 7 operating reactors at the 2 Fukushima nuclear sites survived the earthquake and tsunami just fine. And all the operating reactors not in Fukushima survived the earthquake and tsunami just fine.

What was the major difference between the two Fukushima nuclear sites? Daini's reactors where a newer design. Kind of indicates that newer plants were designed better. So nuclear plants meeting newer safety and design criteria should be fine to start up.

-3 ( +1 / -4 )

The Fukushima No1 plant was hit by a 13 m tsunami while the height at the No2 plant was lower at 9 m. The Fukushima No1 plant lost all its off site power supplies and mains water while at the No2 plant still had one high-voltage offsite power supply which wasn't enough. The No2 plant also lost its mains water supply.

Three reactors were operating at the No2 plant on the day of 3/11. The tsunami knocked out the plants seawater pumps used to cool the reactors. Because of the limited power supply, the workers were still able to monitor the reactor temps and water levels. The workers which numbered 2,000 at the time of the disaster were able to run a high-voltage power cable for 9 km, a remarkable achievement in less time than normal. Generators were air lifted from TEPCO's Niigata plant.

The No2 plant manager, stated that the reactors came within 60 minutes of meltdowns. TEPCO has spent ¥billions repairing the extensive damage at the No2 plant even though its unlikely it will ever operate again.

Its unlikely, that 30 out of the current fleet of 48 reactors can meet the new safety standards set by the NRA. 13 are too old to retrofit and therefore more likely will be decommissioned. The four reactors from the Fukushima No2 plant won't operate again, that leaves 14 possible reactors. The inspection work of the reactors by the NRA is behind on schedule.

The power utilities have spent more than ¥14 trillion on updating the safety of their atomic power plants. On the anniversary of 3/11, the speaker of the lower house called for an end to nuclear energy.

3 ( +3 / -0 )

So if loss of outside power was the problem then it has nothing to do with the design or safety of the reactors themselves but with the design and safety of the backup power systems. that doesn't require any modifications to the reactors just to the power supply systems.

-2 ( +1 / -3 )

So if loss of outside power was the problem then it has nothing to do with the design or safety of the reactors themselves but with the design and safety of the backup power systems. that doesn't require any modifications to the reactors just to the power supply systems.

Lost of the high-voltage off-site power lines and the mains water supply weren't the only problems. There are cracks in the containment vessels and suppression chambers which are now leaking cooling water.

When the Tokyo firemen arrived at the nuclear site with their water pump engines, TEPCO requested they were connected to the reactors to add water to cool the cores, which they did. But what they didn't know at the time because of a design fault on a control valve, instead of the water entering the containment vessel, it was instead diverted into the isolation condensers which meant there level of the water in the containment vessel was lower than the plant operators had thought. I would call that a very serious design flaw in the reactor. Just for reference, all plant and equipment inside the reactor building is essential and part of the reactor system.

Because of the very high levels of radiation inside reactor buildings 1-3 its impossible for a full investigation of what actually happened in there and what was damaged from the earthquake, the tsunami, the explosions?

2 ( +2 / -0 )

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