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Airborne Radiation Threat

Fragrant Harbour A forum for the large number of pilots (expats and locals) based with the various airlines in Hong Kong. Air Traffic Controllers are also warmly welcomed into the forum.

Airborne Radiation Threat

Old 17th Mar 2011, 13:47
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So if I eat more than 8 bananas I should not do a Tokyo flight?
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Old 17th Mar 2011, 14:41
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Sorry, this just cracks me the fark up.
You sit here in HKG breathing in sulphur dioxide, nitrogen dioxide, heavy metals, ozone, and particulate matter that is anywhere from 4 to 60 times the WHO limit more than 50% of the year and you are worried about radiation that coud make a mosquito mildly ill after 4 years of exposure to it.
Really ???? cuckoo cuckoo
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Old 17th Mar 2011, 20:18
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Frieght dog

0.809 micro sieverts/hour were recorded in central Tokyo
I agree, that's fine. If it's true.

The problem is that everyone and every organisation has a vested interest, from the IAEA (promotion of nuclear power), to the BBC (continued funding from the Govt), to airlines (appeasement of shareholder requirments).

Even I have a vested interest: to keep safe by reducing risks.

Last edited by jed_thrust; 17th Mar 2011 at 21:45.
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Old 17th Mar 2011, 20:48
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Good news

http://www.powergenworldwide.com/ind...379823380.html

Phew, I'll sleep better now after reading that. NOT.
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Old 17th Mar 2011, 21:46
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From this morning's The Australian:

THE government has warned Australians not to travel to Tokyo or to anywhere on Honshu Island, north of the Japanese capital, because of uncertainty over the nuclear power stations battered by the earthquake and tsunami.

After a meeting of the National Security Committee of Cabinet in Canberra last night, the Department of Foreign Affairs and Trade raised its travel warning for northern Honshu to its highest level: "Do not travel."

"Australians should not travel to Tokyo and northern Honshu unless their presence in Japan is essential," said the advice issued at about 11pm. "Australians in these areas should leave unless their presence in Japan is essential."

The overall level of the advice for Japan has increased to: "Exercise a high degree of caution."
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Old 18th Mar 2011, 02:28
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Argus Tuffit's link to the story about Daya Bay Nuclear Power Station being safer than the Fukishima Facility brought a wry smile to my face.

For those of us who were in Hong Kong during the construction stage of Daya Bay will remember SCMP reports of serious construction errors and finally the revelation that the facility was built almost on top of a seismically active fault line...safer indeed...my fat butt!

Some eerily familiar and somewhat chilling information in this link:

Information Bridge: DOE Scientific and Technical Information - Sponsored by OSTI

(Apologies for thread creep)
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Old 18th Mar 2011, 05:53
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I don't care what all of you macho buffoons say but there is no safe exposure to radiation, period. We are not talking about comparable levels to that experienced whilst flying, that is ludicrous, if that was the case why is half of Tokyo getting "out of Dodge".
I think we've been spoon fed to much bull**** by the BBC and CX for that matter, there are far too many vested interests here, since when did corporations care about anyones health? Pity those poor buggers pissing into the wind trying in vain to extinguish 40 years worth of spent nuclear rods, lambs to the slaughter, all in the hope of painting a picture of everything being under control.

Reactor #4 Breached, In Full Meltdown, Releasing Lethal Radiation | Alexander Higgins Blog
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Old 18th Mar 2011, 06:21
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Three Mile Island nuclear expert: I'm taking potassium iodine tablets against radiation.
Update: a nuclear industry veteran explains why Japan's disaster could take a year to unfold, and contaminate for decades.

David CaseMarch 15, 2011 14:04
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Firefighters join search and rescue efforrts on the northeast coast of Japan on March 14, 2011. (Patrick Fuller/Japanese Red Cross/Getty Images)
UPDATE: A cascading nuclear disaster at the the Dai-ichi nuclear power plant in Fukushima still eludes control. By Wednesday morning in Japan, explosions had occurred in three reactors, and a fire had broken out in a fourth. At least one reactor containment has apparently been damaged, releasing a significant dose of radiation. In the Nos. 5 and 6 plants — previously thought to be of no concern — authorities detected a rise in temperature levels, leading them to report that they were keeping an eye on these reactors as well, according to the Wall Street Journal.

For several days, authorities have attempted to reassure the public. Now, they are pleading for help.

To get independent answers about the risks faced by people, GlobalPost turned to Arnold Gundersen, a 39-year veteran of the nuclear industry. Now chief engineer at Fairwinds Associates, he has worked as a nuclear plant operator and he served as an expert witness in the investigation into the Three Mile Island accident.

GlobalPost: Officials have said the possibility of a large-scale radiation release is small. Do you agree?

Arnold Gundersen: I think that the probability of a large scale release is about 50-50, and I don’t call that small.

GlobalPost: Why do you think that?

Gundersen: For several reasons. One, you’ve got three reactors involved. Two, you’re already picking up radiation on aircraft carriers a hundred miles away at sea, on helicopters 60 miles to the north, and in town. So clearly, as these plants become more and more difficult to control, it becomes quite likely that a containment now will have a gross failure. And a gross failure will release enormous amounts of radiation quickly.

GlobalPost: The New York Times is reporting that radioactive releases could go on for weeks or months. How concerned should we be about that? At what point does a reactor like this becomes less menacing?

Gundersen: The chain reaction has stopped. That happened in two seconds. But the radioactive isotopes are still decaying away. They’ll decay for at least a year. So you have to release the pressure from that containment pretty much every day. With releasing the pressure will come releasing radioactive isotopes as well.


So yes, the Times is right that every plant — there are now three or four of them — will be opening up valves every day to make sure the pressure is down. And there will be releases from these plants for at least a year.

GlobalPost: How much of a health threat is that?

Gundersen: Within 90 days, the iodine health risks will disappear, because that will decay away. But the nasty isotopes — the cesium and strontium will remain for 30 years. And they’re volatile.

After Three Mile Island, strontium was detected 150 miles away from the reactor. That ends up in cow’s milk and doesn’t go away for 300 years. The releases from these plants will last for a year, and will contain elements that will remain in the environment for 300 years, even in the best case.

If we have a meltdown, it will be even worse than that.

GlobalPost: The ultimate risk in any nuclear accident is that the heat can grow so intense that the steel containment vessel is ruptured, releasing a large amount of radiation. You say there’s a 50-50 chance of this happening. What kind of health effects can we expect?

Gundersen: First, it’s important to know that this steel containment is about an inch thick. It’s not some massive battleship of steel. The reactor is already open, because the pressure relief valves have to stay open.

On top of that, these containments have already breached. We saw iodine and cesium in the environment before the first unit exploded. When you see that, that’s clearly an indication that the containment has breached.

Now, is it leaking 1 percent a day? Probably. Is it leaking 100 percent a day? No. I think for the neighboring towns out to 2 miles, they won’t have anybody back in them for five years. Out to 15 miles, I doubt you’re going to see anyone back for six months. And that’s in the best case, without a meltdown.

If we have a meltdown, I don’t think anyone will be back within 20 miles for 10 or 15 years.

GlobalPost: What would happen if they did return?

Gundersen: There would be higher incidence of cancer. The groundwater would be contaminated. With a meltdown, you’re worried about surface contamination of everything within miles of the plant, and groundwater contamination as well.

GlobalPost: How far would the ground water contamination spread?

Gundersen: Chernobyl had a meltdown, and that groundwater wedge is gradually working its way toward Kiev, which is a very large city [about 80 miles away]. That groundwater contamination lingers for 300 years. It’s not something that’s easy to mitigate.

GlobalPost: That’s a serious issue in a country like Japan with a large population and a small land area.

Gundersen: That’s right.

GlobalPost: You mentioned that the containment vessels have already been damaged. It appears that officials are reporting the opposite. How do you know you’re right?

Gundersen: We’re seeing iodine and cesium in the environment. That’s an indication that the containments are leaking. Exactly how much they’re leaking it’s hard to say.

I can’t understand how officials can say that the releases are low, when they don’t have any instruments that are working. Their batteries have failed, and when the batteries fail, all of the instruments stop working. So it’s hard to determine what the radiation levels are, and what the pressure levels are.

The Japanese and the nuclear industry are heavily, heavily financially invested in this. My experience is that, after Three Mile Island and after Chernobyl, everybody said there wasn’t a problem, until there was a problem. So I really don’t put much faith in official pronouncements the first week of an accident.

GlobalPost: So the people who have access to information have a self interest in making that information look as benign as possible?

Gundersen: Yes. On top of that, the officials don’t want to provoke a panic. So there’s a financial long term interest to try to minimize the impact. The flip side of that is that in the process you lose transparency. There is no transparency right now. We’re dealing with second hand information.

I understand from one source that the second unit cannot be vented, because the vent is jammed. I don’t know if that’s true or not. I have one source, and I like to have two. But this accident hasn’t played out yet. It could clearly get worse before it gets better.

GlobalPost: When you say the venting system is jammed, does that mean that pressure will keep building up until something catastrophic happens?

Gundersen: Yes.

GlobalPost: That sounds bad. There have been explosions at two of the buildings where the reactors are housed. You used to operate nuclear reactors. Would the control rooms be affected by these explosions? And how do they continue controlling the reactors under these circumstances?




Gundersen: Yes. The control rooms have become almost uninhabitable. The operators would have to be in Scott air packs, because the ventilation failed. Otherwise they would be breathing contaminated air. The control room is very close to these reactors. Probably 200 feet away. I doubt there’s much being done in the control rooms. They’re contaminated, and the air is unfit to breathe. It’s very difficult to get anything done if you’re wearing an air pack and a bubble suit.

GlobalPost: So how do they release the pressure? Are they sending people to the reactor to manually do these things?

Gundersen: They’ll send someone out to manually open a valve. And then that person will go back out to manually close a valve. In a high radiation field, there are only so many trips you can make before you’ve exceeded what they call emergency limits. So these people are picking up very large doses in very short periods of time. For their personal health, you can’t send them out again.

So they’re running through the available number of operators to do these high risk maneuvers.

GlobalPost: Is it highly skilled work?

Gundersen: Yes.

GlobalPost: Do these doses endanger their health, or are they below thresholds that would cause a problem?

Gundersen: The probability of these workers getting cancer is dramatically increasing, because the doses they receive in a day are higher than what they get in a year. For every 250 rem received, there will be a cancer. That’s pretty well defined. So if one person picks up 2.5 rem, for every hundred people, one of them will get a cancer. That’s just a statistical crapshoot.

GlobalPost: How safe is Tokyo at this point?

Gundersen: The radiation is being diluted by the wind and spread out. Tokyo is a long way away. Germany is a long way from Chernobyl, and the ground in Germany is so contaminated that they are still prohibiting the hunting of wild boars, 25 years later.

But we don’t have a lot of accurate measures. There’s a U.S. aircraft carrier 100 miles away, and the workers on that aircraft carrier received in one hour the dose they would normally get in one month.

GlobalPost: Is there any risk that the radiation would reach American shores?

Gundersen: Oh it will. Chernobyl reached the U.S. The question is how much radiation? There’s not a lot of data to make that determination right now.

GlobalPost: Should people be concerned about food contamination?

Gundersen: Certainly in Japan they should.

I’ve gone out and bought potassium iodine pills, and I plan to take potassium iodine starting in about 10 days, just because I’m concerned about food contamination. That’s a personal choice right now. My experience says that it would be prudent to get potassium iodine pills and take them, to avoid any of the iodine that might come over. But there’s not a lot of data to support whether or not potassium iodine really helps.

GlobalPost: Is that something that you can buy in a health food store?

Gundersen: Yes, you can get these pills in health food stores and online, although I hear that they’re selling out.

Business & Tech Science
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Old 18th Mar 2011, 06:32
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Angry Arfur farks sake

They're "getting out of dodge" because ill-informed scare-mongering speculators are filling the airwaves & sucking up bandwidth with trite nonsense, based on little more than (a complete lack of) armchair expertise and an unhealthy obsession with the latest "update" from some imbecilic blogger.

Statements such as "No such thing as a healthy dose of radiation..." are a prime example of just the sort ignorance that is leading to panicked and ultimately pointless salt & potassium iodine tablet sales.

So you're happy to sit in a veritable sea of RF everyday of your life?!?
Surely you don't use wi-fi or go where there is any?? Of course, you may know the difference between ionising & non-ionising radiation, but then...
Never turn on the weather radar I hope...??
After all, you're intimately familiar with the propagation of sidelobes from planar and phased array T/Rs right?!?!
Perhaps you understand the fundamentals of alpha/beta/gamma/x-ray radiation and their respective differences?
Well, at least you refuse to do polar flights?
TELL me you don't eat bananas??

Fark me, being "macho" has nothing to do with it. It's about opening a book once in a while and learning something. People need to put down their "People" magazines and open a ^&*king science book. The world will thank you for it. It prevents us from becoming panicked SARs-esque screaming, sky-is-falling chicken littles.

The ONLY reason people are lemming(-ing?!) their way to Narita is because of the basic human emotion of FEAR overriding their rational decision making. There is the potential for deaths from this incident, but at the moment they're more than likely to come from hysterical stampeding caused by fear mongering morons.

We're just lucky the Japanese are calm and know how to queue.
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Old 18th Mar 2011, 06:40
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I see that you've been brushing up on your ATPL theory there superfrozo, I took that exam, I believe it was Radioaids under the JAR system.

Not that Chenobile was ever downplayed was it? I understand we face radiation from multiple aviation sources, but how does that compare to cesium and other radioactive nasties? Not in the same ball park I would hazard a guess.


Anyway on the same theme:

Tokyo Passengers Set Off O'Hare Radiation Detectors | zero hedge

Last edited by EXEZY; 18th Mar 2011 at 07:29.
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Old 18th Mar 2011, 11:27
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ATIS for Niigata yesterday indicated caution concerning radioactive cloud.

Half a dozen Chinese airliners there along with an extremely large Russian heavylift helicopter.

I'm with Tossco, Master Hunt and FR. Our humanity is not defined by our pay check and the fact that management are a bunch of avaricious nimrods.

7 in and out of NRT and 2 HND today. Good work.
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Old 19th Mar 2011, 05:04
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7 in and out of NRT and 2 HND today. Good work.
**** man - sounds like they want rid of you!
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Old 19th Mar 2011, 10:21
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Interesting Article

A Glowing Report on Radiation - HUMAN EVENTS
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Old 19th Mar 2011, 11:29
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BusyB

I found that article interesting reading until I saw who wrote it. She is a regular on that bastion of informed media, Fox News.
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Old 19th Mar 2011, 12:57
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Thanks for that 404, I wouldn't recognise anyone on FOX as I never watch it. I am a little dubious about the article but thought it was of interest.
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Old 19th Mar 2011, 13:28
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Just found that New York Times originally published this in 2001.
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Old 19th Mar 2011, 17:31
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I am not sure about everything that was mentioned in this article, however I do know that Chernobyl - contrary to public perception - did not cause any public health problems in Poland or Germany, the first being only 300 km away from ground zero.
No increase in leukemia or thyroid cancer or any other form of cancer anywhere along the track of the radioactive cloud.
The only cancer cases that developed - and each of these would have been preventable with Iodide treatment and screening of agricultural products- were in some areas of the former Soviet Union, where a) children did not get treated with potassium iodide and b) were given milk from cows that grazed on contaminated soil for a long time.

This can all be read in WHO publications.
As superfrozo said... put away the newspapers, magazines et cetera and grab a science publication.
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Old 20th Mar 2011, 10:18
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''I don't care what all of you macho buffoons say but there is no safe exposure to radiation, period.''

Actually, scientists are now suggesting that a little bit of radiation is good for you. It kills off the viable mutated cells which can develope into cancers. Statistics show a lower cancer rate amongst employees who work with low level radiaiton evices such as airport x-ray machines. A good analogy is the areas of the UK which have elevated levels of naturally occuring radon gas. The rates of all types of cancer are lower in these areas. But the rates of lung cancer - which has exposure to radon as a prime factor - are up.

Radon is created when uranium decays. The areas of the UK where radon is present in high concentrations tend to have granite as a bed rock where naturally formed uranium deposits are common.

What's Hong Kong built on? It's granite! And what's more - granite is used as an aggregate in concrete in most buildings here. Studies were done in the 1990s as to the levels of radon in Hong Kong buidings and I suggest that if you're easily worried about radiation - you don't google 'Radon gas in Hong Kong'.
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Old 20th Mar 2011, 10:46
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Actually, scientists are now suggesting that a little bit of radiation is good for you. It kills off the viable mutated cells which can develope into cancers. Statistics show a lower cancer rate amongst employees who work with low level radiaiton evices such as airport x-ray machines.
Yes, 'tis a fact.

Actually...years ago there were foot xray machines in many shoe stores in the USA...you could step up, push the ON button, and look at your feet in your (about to be purchased) shoes, to see if the fit was proper.
The big green glow, it was called, at the time.
NO one, to my knowledge, had their feet drop off due to the radiation.
I stuffed my cat into one of these machines, and looked at at him for many minutes (perhaps hours)...and the cat lived to age 23.
Didn't end there, either.
When the cat finally died, we had him stuffed and properly mounted, and placed on the top of the house bar.
'Harvey' provided a proper 'mood light', glowing nicely blue/green, for our guests.
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Old 20th Mar 2011, 17:00
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Glow In The Dark Pussy.....isn't that a bar in Wanchai?

Seriously though 411A, I've noted your other posts on the R&N Forum. They seem to infer the danger is being somewhat played down (John Wayne etc).

So, straight up, would you refuse to fly into Tokyo?
Cheers.
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