Montana Smith
Active member
Rocket Surgeon said:Haven't had time to even skim the contents but this might be interesting reading for some:
The Effects of Nuclear Weapons
Editor: SAMUEL GLASSTONE
Prepared by the UNITED STATES DEPARTMENT OF DEFENSE
Published by the UNITED STATES ATOMIC ENERGY COMMISSION
June 1957
A great find, and also cool that it was located in the "Marshall" collection'.
I checked the index for fridge and refrigerator, but no luck.
Checking the text, however, brought this up:
Sixteen trailer coaches, of various makes, intended for use as mobile homes, were subjected to blast in the 1955 test. Trailer parks and dealer stocks are generally situated at the outskirts of cities, and so the mobile homes to be tested were placed at a considerable distance from ground zero. Nine trailer-coach mobile homes were located where the peak blast overpressure was 1.7 pounds per square inch, and the other seven where the overpressure was about 1 pound per square inch. They were parked at various angles with respect to the direction of travel of the blast wave.
At the higher overpressure two of the mobile homes were tipped over by the explosion. One of these was originally broadside to the blast, whereas the second, at an angle of about 45’, was of much lighter weight. All the others at both locations remained standing. On the whole, the damage sustained was not of a serious character. There were variations from one trailer-coach to another subjected to the same blast pressure, due to different methods of construction, types of fastening, gage and design of die-formed metal, spacing of studs, and window sizes.
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The interiors of the mobile homes were usually in a state of disorder due to ruptured panels, broken and upset furniture, and cupboards, cabinets, and wardrobes which had been torn loose and damaged. Stoves, refrigerators, and heaters were not displaced, and the floors were apparently unharmed. The plumbing was, in general, still operable after the explosion. Consequently, by rearranging the displaced furniture, repairing cabinets, improving window coverings, and cleaning up the debris, all trailer-coaches could have been made habitable for emergency use.
So, not much of a blast wave in these tests, at the distance where the trailers were located.
This is referring to houses in the Nevada 1955 tests:
... refrigerators, ranges, room heaters, clothes dryers, and water heaters suffered to a moderate extent only. There was some displacement of the appliances and connections which was related to the damage suffered by the house. However, even in the collapsed two-story, brick house, the upset refrigerator and range were probably still usable, although largely buried in debris. The general conclusion is, therefore, that domestic gas (and also electric) appliances would be operable in all houses that did not suffer major structural damage.
That's it for fridge references, but there was this on food testing:
To determine the effects of a nuclear explosion on foodstuffs, some 90 food products were exposed in the 1955 tests.
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Food samples were exposed at distances ranging from a quarter of a mile to about 15 miles from ground zero. In some instances, the main purpose was to determine the effects of either the initial nuclear radiation or the residual radiation (fallout). The present discussion will be restricted to the effects of blast.
Fresh food products, such as potatoes, apples, and onions, packaged in the usual light wooden boxes, suffered from bruising and crushing. Apart from this, there was relatively little direct blast damage. There were very few (if any) failures of glass or metal containers due to the high overpressures, although some were pierced by sharp missiles, especially flying glass. The damage to packaged goods resulted mainly from dislodgement from the shelves in the kitchen and subsequent breakage of glass containers. Where the cans or jars had been stored on shelves in the basement, the damage was negligible, even when the main structure of the house was demolished.
What this does tell me, is that as evidenced by the photos from Hiroshima and Nagasaki, where certain objects inexplicably remain standing, the blast wave in the test detonations also appears 'erratic' in the damage and effect it inflicts. Sometimes even a flimsy structure can provide inexplicable protection.
Here's more general description of the surface burst, as in the test bombs.
In a surface burst, the ball of fire, in its rapid initial growth, will touch the surface of the earth. Because of the intense heat, a considerable amount of rock, soil, and other material located in the area will be vaporized and taken into the ball of fire...In addition, the high winds at the earth’s surface will cause large amounts of dirt, dust, and other particles to be sucked up as the ball of fire rises.
An important, difference between a surface burst and an air burst is consequently, that in the surface burst the atomic cloud is much more heavily loaded with debris. This will consist of particles ranging in size from the vary small ones produced by condensation as the ball of fire cools to the much larger particles which have been raised by the surface winds.
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At a fraction of a second after the explosion, a high-pressure wave develops and moves outward from the ball of fire. This is the “blast wave” ... which is the cause of much more destruction accompanying an air burst.
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When the blast wave strikes the surface of the earth, it is reflected back, similar to a sound wave producing an echo. This reflected blast wave, like the original (or direct) wave, is also capable of causing material damage. At a certain region on the surface, the position of which depends chiefly on the height of the burst above the surface and the energy of the explosion, the direct and reflected shock fronts fuse. This fusion phenomenon is called the “Mach effect.” The “overpressure,” i. e., the pressure in excess of the normal atmospheric value, at the front of the Mach wave is generally about twice as great as that at the direct shock front.
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In addition to the ground wind (or afterwind) due to the updraft caused by the rising ball of fire strong transient winds are associated with the passage of the shock (and Mach) front. These winds may have peak velocities of several hundred miles per hour at points fairly near ground zero; and even at more than 6 miles from the explosion of a 1-megaton nuclear bomb...