1946 Project Crossroads Nuclear Test Film

Here is a summary of the time stamps of this video:

Project Crossroads – Nuclear Test Film (1946)
Courtesy: U.S. Department of Energy

1:50 USS independence next to the Nagato before Test Able
2:20 target ships mapped
4:14 The scientists and samples
6:00 Radio controlled drones
7:00 Manhattan project scientists at Kwajalein
9:40 dropping of the bomb
14:31 diffused cloud “dangerous radioactive particles in the air had become so diffused it was no longer a danger to the area.”
15:52 camera on bikini showing shock wave.
17:20 map of what ships got hit as they dropped the bomb off target. Independence noted
18:55 Independence seen just after explosion when the support ships entered the lagoon.
21:54 animals
24:31 Skate stating the inside were damaged, so they went inside it.
25:21 USS Independence
27:34 Baker Test, second test underwater explosion.
40:00 USS Independence

https://youtu.be/2HkLZekOZLU
Project Crossroads – Nuclear Test Film (1946)
Courtesy: U.S. Department of Energy

Continue reading “1946 Project Crossroads Nuclear Test Film”

Procedures for Decontamination of Plutonium From Various Surfaces, Skin

Christensen, E. L, U.S. Atomic Energy Commission, and Los Alamos Scientific Laboratory. Procedures for Decontamination of Plutonium From Various Surfaces. Los Alamos, N.M.: Los Alamos Scientific Laboratory of the University of California, 1959. pp 19-21

See Also: USNRDL-TR-256 PROTECTING AND CLEANING HANDS CONTAMINATED BY SYNTHETIC FALLOUT UNDER FIELD CONDITIONS

Aluminum, Brass, Concrete, Glass, Iron and Mild Steel, Lucite, Plexiglass and Other Acrylic Plastics, Monel, Paint, Plastics Other Than Acryiic Based Plastics, Porcelain, Rubber, Skin, Stainless Steel and Tile.

SKIN

Immediate use of a synthetic detergent-sequestrant mixture has been reported to give better decontamination than if the use of the mixture is preceded by soap and water wash. However, no temperature was given for the water used and if the water was warm enough to cause the pores to open, the decontamination solution, normally used cold, would have a difficult time removing the activity. At Los Alamos steps

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one and two of the recommended procedure normally give sufficient decontamination.

For decontamination of hair, omit the KMnO4 treatment.

A. Recommended procedure.

1. Lather with liquid soap, using cold water, rinse thoroughly.
2. If count still remains, wash with synthetic detergent and sequestrant in a ratio of 1:2. Rinse with water.

a. Sequestrants such as:

  1. Na EDTA-
  2. Citric acid
  3. Sodium citrate
  4. Sodium tartrate
  5. Sodium phosphates
    1. b. Do not use oxalates!

C.P. Cleaner, manufactured by Finley Products, Inc., is also satisfactory. Apply as label directs.

3. If count still remains, scrub with KMnO4 crystals wet with just enough water to make thick paste. Rinse thoroughly. Repeat 5 times. Remove color with a 4% NaHSO3 solution. (Use only as a last resort.)

4. Apply TiO2 paste and rub thoroughly. Remove by swabbing. Rinse thoroughly with water.

B. Decontamination solutions in order of decreasing effectiveness.

1. TiO2 paste (expensive)
2. KMnO4 paste; color removed with 4% NaHSO3

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3. Synthetic detergent – sequestrant
4. C.P. Cleaner or similar hand cleaner
5. 3% trisodium nitrolotriacetate – synthetic detergent
6. 3% Na citrate, ph 7.0
7. 3% Na acetate, ph 2.0
8. 3% Na tartrate, ph 7.0
9. 3% Na lactate, ph 7.0
10. 3% glycine
11. 3% Na acetate, ph 7.0
12. Water with liquid soap
13. Isotonic saline solution