The following link is to a realtime radiation monitor in Tokyo, updated every minute.
altTokyo.com | Tokyo Radiation
Try reading fact instead of being a conduit for hysteria.
The Japanese are dealing with this in an honourable fashion while you whine in the background. Try a little self reflection.

Certainly not...in fact we might have a charter there, shortly, if the deposit arrives in time.
Now, if one of the defective reactors blows its top, big time, and spews copious amounts of radiation in all directions, might be a different story.
However, in this case, the airspace is likely to be closed, anyway.

Exactly!
 

That is so true.

Fair enough.
Would you do two in a row at present?

Would not be a problem.

or 3 ... makes no difference. You'll collect much more ionizing radiation on the way there than on the ground in NRT or HND.

There is NO problem with going to Tokyo just now.
You know the radiation values (if you know where to look - someone posted a link I believe)
And for the worst case scenario:
You know how far it is from Fukushima.
You know here the wind comes from.
The rest is maths.

And - I can only say it again - 200+ km from ground zero you will NOT turn into the Incredible Hulk, nor into Spiderman (if a Japanese spider bites you) ...

That depends on whose figures you use.

On one set of numbers, a five or six hour turnaround is going to be equal to two month's of local flying.

So no, you won't collect more on the way there, but it's not a show stopper.

5 hours in NRT = 0.33 mSv (current worst case), therefore 18 trips is the same as your entire year's worth of flying.

Please get the Value Right
 

I see everyone writing mSv - but do they mean micro or milli Sv, because there is a big difference. It most cases it is micro Sv that are being quoted in the technical sites not milliSv. The letter "M" applies to milli, the Greek letter "mu" is micro but most people's computers are not capable of writing that.

So please ensure you have your units correct otherwise you are getting invalid answers.

Precisely, GIGO.
Personally, I would no have problem whatsoever to slip in NRT, repeatedly, during ops.

.33 mSv? That sounds quite high to me, where did you find this reading?

.33 mSv in 5 hours (milliSievert) equals 0.066 mSv/hr = 66 uSv/h (microSievert) which is about 10 to 12h of flight time at FL380 or so if we assume somewhat between 5.5 and 6.6 uSv/h ..

correct me if I have a maths failure here...

(P.S. I just did another google search and the highest reported radiation level I found for Tokyo was the 0.809 uSv/h on the 15th, which I quoted before)

radiation dose chart
 

to put it all into perspective ...

this chart is not exactly "sciencey", but makes for a nice "big picture"

http://xkcd.com/radiation/

I might be wrong but comparing the radiation levels of tokyo with hong kong it seems hong kong is on average higher? Just a rough comparison with gov web site for hk., most cities in japan are lower?

Apart from the ones in the immediate vicinity of the power plant of course. The amount of granite used in construction in HK has something to do with it.

and this is why everybody, who relies on the media as an exclusive source of information, gets scared ****less ... fearmongering to the extreme, watch and draw your own conclusions:

Video - Breaking News Videos from CNN.com

Hmmmmm...I wonder if this is important..?

...ummm, Freightdog....at what point do you stop describing this as 'fearmongering' and start calling it what it is: The Worlds Most Serious Nuclear Event (since Chernobyl)..? This mornings headline in the UK Telegraph:

Japan nuclear crisis: huge increase in radiation level at crippled nuclear plant


The leap in radiation within the Fukushima Daiichi power plant was located in the turbine building of Number 2 reactor, where a reading of more than 1,000 millisieverts per hour was recorded, the highest since the plant was damaged in the March 11 earthquake and tsunami.

"This figure is 10 million times higher than water usually kept in a reactor," a spokesman said, though the company later retracted the calculation but not the radiation reading. "We are examining the cause of this, but no work is being done there because of the high level of radiation.

"High levels of caesium and other substances are being detected, which usually should not be found in reactor water. There is a high possibility that fuel rods are being damaged."



I'll let you have a think as to the seriousness of 1000 Mill/sev per hour.....

Hey Freightdog, here's some more 'fearmongering' for you:

a quote from a rep working for the Tokyo power company...

Regrettably, we don't have a concrete schedule at the moment to enable us to say in how many months or years (the crisis will be over)," TEPCO vice-president Sakae Muto said in the latest of round-the-clock briefings the company holds.

....have a ponder on the word YEARS....

yea, nothing to worry about here...move along.

@ Air Profit: it IS the most serious nuclear disaster since Chernobyl - and always was. I never said anything to the contrary.

But the high radiation levels (btw. your sources are wrong, it never was 1000mSv, but only 10 mSv, check today's reports) are AT THE SITE OF THE ACCIDENT. In water puddles under the reactor. Not in the air, and not outside the facility or anywhere else.. The only people that are in any danger of excessive exposure are the crew that try to fix this.
Not 240 km away in Tokyo and certainly not at the US west coast.

Those who are still worried can protect themselves by increasing their intake of antioxidants. Foods such as fresh green vegtables, tea and coffe are all anti-oxidants. Fruit such as berries (the darker the skin - the better) also work well. Products from these are also efficeint in combating the free radicals produced by ionizing radiation which can cause DNA damage.

Personally, I follow the advice given by the Russian Navy. The reactors on the old Soviet submarines are so leaky, the submariners are given a ration of 250ml of red wine a day!

Another glass of protection anyone?