Gerd Ludwigのインスタグラム(gerdludwig) - 8月2日 00時35分

Inside the belly of the beast. In my time documenting the aftermath of Chernobyl, I have gone further into the destroyed Reactor No. 4 than any other Western still photographer, each time for only 15-30 minutes. This spot, however, was so contaminated that, despite wearing protective gear, I only had about one minute to shoot.
This weekend, I am heading off to the opening of my exhibit, “The Long Shadow of Chernobyl” at the ROSPHOTO state photo museum in Saint Petersburg, which will show over 100 of my photographs from the aftermath of the Chernobyl disaster. The opening coincides with much renewed interest in the accident after the Chernobyl miniseries on HBO, which was noticed in Russia as well.
The opening of the exhibit will be on Tuesday, August 6 at 6pm at the ROSPHOTO state photo museum in Saint Petersburg, Russia.
@thephotosociety @ナショナルジオグラフィック #Chernobyl #ReactorNumber4 #nuclear #Ukraine #thelongshadowofchernobyl

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bortzjc @markzilberman @samyfayyad @reanimated_professor here is the explanation: Using heat to convert water into steam is a way to convert thermal energy into mechanical energy. Because of the law of conservation of energy, the mechanical energy created when this is done can never be greater than the thermal energy expended to do the conversion (i.e., to convert the water to steam). According to the HBO miniseries on Chernobyl, the water tank under the crippled reactor contained a volume of water equal to 7000 cubic meters. (I mistakenly said it was 7000 gallons in an earlier comment.) The density of water is 997.1 kg per cubic meter, where kg stands for kilogram. Multiplying the density by the volume, we find that the total mass of the water would have been 6.9797 million kg. The energy per unit mass required to convert water into steam at 100 degrees Celsius and at standard atmospheric pressure is 2257 J/gm, where J stands for joules and gm stands for grams. (A joule is a unit of energy used in the metric system.) Multiplying the total mass of the water by 2257 J/gm, we find that the total energy required to convert the water into steam would have been 1.5753 x 10^13 J (i.e., 1.5753 times ten to the thirteenth power, in units of joules). This is the maximum possible thermal explosive energy that could have been produced by converting the 7000 cubic meters of water into steam. However, 1 megaton of explosive energy is equal to 4.184 x 10^15 J. Using this value to convert from joules to megatons, we find that the maximum number of megatons of thermal explosive power that could have been released by converting the water to steam was just 0.003765 megatons. This is a factor of 531 to 1062 lower than the 2-4 megatons quoted in the HBO miniseries. So the miniseries wildly overestimated the explosive power of the potential thermal explosion, and therefore wildly overestimated the degree of danger posed by the water under the reactor.

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bortzjc @markzilberman I'll get you a calculation showing the thermal explosion as described in the HBO miniseries could not possibly have been anywhere near the magnitude described. In other words, if it had happened, it would have been _way_ less than the 2-4 megaton range quoted in the miniseries. Note that 1 megaton is the equivalent explosive power produced by detonating 1 million tons of TNT. I'll get you the specific numbers later this evening or tomorrow morning.

mnml.me @juggernaut_cain I would imagine there had to be some sort of camera protection, if for no other reason than to keep the radiation from affecting the film inside the camera and altering the exposure. Film can handle low dose of radiation (like X-ray machines at airports) but this is definitely not that! 😀

markzilberman @bortzjc I really don't know how to compare. I presume you're saying there's no comparison? Are you saying that the threat they told Gorbachev didn't exist? Seems strange given the proclivity of the Soviets to understate and conceal their problems through their lies and propaganda.

get_a_grip_photo Congratulations and thank you for the link. I am curious whether you have to dispose of your camera equipment after shooting at Chernobyl. Also, what have the lasting effects been on you psychologically and any physically?

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