Originally posted by Skipper
I don't think that's true about the plugs.
The backup generators failed because they were only engineered to withstand a tsunami 6.5m high. The tsunami that hit was 7m.
Jesus...
It was the plugs from the mobile generators that they brought in to replace the damaged plant generators that weren't compatible...
Read the article that I posted...
VDub
• When the earthquakes struck, Japan’s nuclear power stations did as they were designed to do and shut down with the insertion of control rods. This halted the nuclear chain reaction that generates the power. In response the plants rapidly dropped in power to around 5% of normal.
• Other (non-uranium) constituents of the fuel remained “hot” i.e. reacting, which is normal.
• Back up power systems (diesel generators) were applied to continue to provide cooling to the reactor core. This worked as expected.
• Approximately 1 hour later, two power plants housing seven nuclear reactors were struck by a 7 metre tsunami. These plants were Fukushima Daiichi and Fukushima Daini. This disabled the diesel generators that were in use, and all other back-up generators that were available. It is this second disaster that triggered the problems at these power plants, as the plants began to experience a loss of cooling on the fuel.
• Back-up cooling from batteries was applied, and provided cooling for approximately a further 8 hours
• Other measures have then needed to be implemented as this power source ran out. This has included pumping sea-water into the reactor core. This is not a preferred action as it causes some damage.
• Some portions of the fuel rods remained exposed from the coolant for long enough to heat up and melt. This is the meaning of “partial meltdown”
• Some build up of radioactivity has occurred within the reactor buildings. This has been periodically vented in a controlled way to maintain pressure within the reactor at a safe level. The radiation being vented is of a type that is short lived, decaying rapidly to harmless substances
• The venting gas has contained hydrogen. Unfortunately, perhaps due to not venting quickly enough, the hydrogen concentrations have become elevated and resulted in explosions occurring outside of the reactor building when the venting occurred
• Presently the reactor cores are being successfully cooled and progressively moved to a state of cold shutdown, meaning fully under control.
• Critically, throughout the disaster the integrity of the very strong Containment Structures, which separate the nuclear reactor from the outside world, has been maintained. The reactor building itself then contains the core of nuclear fuel, and these reactor buildings have also remained intact. This means there has never been a risk of a “Chernobyl-type” incident, with serious releases of radioactivity to the surrounding environment that would pose a threat to human health. The Chernobyl power stations had no such structure, which greatly increased the consequences of that accident.
• The incident has received a severity rating of INES 6. It is clearly very serious. The Three Mile Island Accident was a 5. Chernobyl, however, was a 7 (the highest), and is a very different league.
Originally posted by VDub
• When the earthquakes struck, Japan’s nuclear power stations did as they were designed to do and shut down with the insertion of control rods. This halted the nuclear chain reaction that generates the power. In response the plants rapidly dropped in power to around 5% of normal.
• Other (non-uranium) constituents of the fuel remained “hot” i.e. reacting, which is normal.
• Back up power systems (diesel generators) were applied to continue to provide cooling to the reactor core. This worked as expected.
• Approximately 1 hour later, two power plants housing seven nuclear reactors were struck by a 7 metre tsunami. These plants were Fukushima Daiichi and Fukushima Daini. This disabled the diesel generators that were in use, and all other back-up generators that were available. It is this second disaster that triggered the problems at these power plants, as the plants began to experience a loss of cooling on the fuel.
• Back-up cooling from batteries was applied, and provided cooling for approximately a further 8 hours
• Other measures have then needed to be implemented as this power source ran out. This has included pumping sea-water into the reactor core. This is not a preferred action as it causes some damage.
• Some portions of the fuel rods remained exposed from the coolant for long enough to heat up and melt. This is the meaning of “partial meltdown”
• Some build up of radioactivity has occurred within the reactor buildings. This has been periodically vented in a controlled way to maintain pressure within the reactor at a safe level. The radiation being vented is of a type that is short lived, decaying rapidly to harmless substances
• The venting gas has contained hydrogen. Unfortunately, perhaps due to not venting quickly enough, the hydrogen concentrations have become elevated and resulted in explosions occurring outside of the reactor building when the venting occurred
• Presently the reactor cores are being successfully cooled and progressively moved to a state of cold shutdown, meaning fully under control.
• Critically, throughout the disaster the integrity of the very strong Containment Structures, which separate the nuclear reactor from the outside world, has been maintained. The reactor building itself then contains the core of nuclear fuel, and these reactor buildings have also remained intact. This means there has never been a risk of a “Chernobyl-type” incident, with serious releases of radioactivity to the surrounding environment that would pose a threat to human health. The Chernobyl power stations had no such structure, which greatly increased the consequences of that accident.
• The incident has received a severity rating of INES 6. It is clearly very serious. The Three Mile Island Accident was a 5. Chernobyl, however, was a 7 (the highest), and is a very different league.
what is the source to all the information from this website?
VDub
We really need to stop worrying so much about this plant and be much more concerned for the people who have lost loved ones and property..
This pictures that Jon posted are much much worse than the situation at that power plant...
Skipper
quote:
Originally posted by VDub
Jesus...
It was the plugs from the mobile generators that they brought in to replace the damaged plant generators that weren't compatible...
Read the article that I posted...
There are a billion posts in this thread. I did not read them all.
The person that explained that to me works in the uranium industry ffs. I'm not just making it up.
geroin
quote:
Originally posted by VDub
We really need to stop worrying so much about this plant and be much more concerned for the people who have lost loved ones and property..
This pictures that Jon posted are much much worse than the situation at that power plant...
some of the information posted on this site as "facts" is falsified. Where is the source to all the information on it? there are numerous reports of massive radiation levels increase within hundreds of miles from the plant. Radiation does not just evaporate within a couple of days.
VDub
quote:
Originally posted by geroin
what is the source to all the information from this website?
He lists them Gera...
I don't have time to search...
geroin
quote:
Originally posted by VDub
He lists them Gera...
I don't have time to search...
I could not find anything.
quote:
"The bottom line of the events at Fukushima and the nuclear power sector more broadly would appear to be as follows:
• Zero deaths from radiation
• Zero release of radiation levels of a danger to human health, except for brief periods for those working within the plant compound (not Public exposure). These workers would be well protected and monitored to avoid excessive accumulated doses
• Minimal injuries (about a dozen) as a result of the hydrogen explosions
• No significant or lasting environmental impact whatsoever
• A major evacuation, which has no doubt been distressing for all involved"
this is false information as it is impossible to tell at this time the severity of the radiation and the levels of it in the atmosphere and environment in general + the long term effects to human health for people in the region close to the plant and surrounding areas.
VDub
quote:
Originally posted by geroin
some of the information posted on this site as "facts" is falsified. Where is the source to all the information on it? there are numerous reports of massive radiation levels increase within hundreds of miles from the plant. Radiation does not just evaporate within a couple of days.
No it doesn't evaporate. But it does break down...
Some types faster than others...
And how do you know that facts are falsified???
Because the media says that Japan is on the verge of nuclear apocalypse??
FunkyCrew
isn't he making educated conclusions, based on his background and work? I found his report interesting - definitely more calm and level-headed then most of the info out there
geroin
quote:
Originally posted by VDub
No it doesn't evaporate. But it does break down...
Some types faster than others...
And how do you know that facts are falsified???
Because the media says that Japan is on the verge of nuclear apocalypse??
quote:
Originally posted by geroin
this is false information as it is impossible to tell at this time the severity of the radiation and the levels of it in the atmosphere and environment in general + the long term effects to human health for people in the region close to the plant and surrounding areas.
E2EK1EL
The article is hard to find, when it's a hyper linked with one word with plain text.
I normally make a big title, link an image and copy & paste the info and source the URL if needed.
