Plutonium Decontamination Using CBI Decon Gel 1101 in Highly Contaminated and Unique Areas at LLNL
A highly contaminated glove-box at LLNL containing plutonium was decontaminated using a strippable decontamination gel. 6 x 12 inch quadrants were mapped out on each of the surfaces. The gel was applied to various surfaces inside the glove-box and was allowed to cure. The radioactivity in each quadrant was measured using a LLNL Blue Alpha meter with a 1.5 inch standoff distance. The results showed decontamination factors of 130 and 210 on cast steel and Lexan{reg_sign} surfaces respectively after several applications. The gel also absorbed more than 91% of the radiation emitted from the surfaces during gel curing. The removed strippable film was analyzed by neutron multiplicity counting and gamma spectroscopy, yielding relative mass information and radioisotopic composition respectively.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 945677
- Report Number(s):
- LLNL-TR-404723; TRN: US0901228
- Country of Publication:
- United States
- Language:
- English
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36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
12 MANAGEMENT OF RADIOACTIVE WASTES AND NON-RACIOACTIVE WASTER FROM NUCLEAR FACILITIES
54 ENVIRONMENTAL SCIENCES
CURING
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EFFICIENCY
GAMMA SPECTROSCOPY
LAWRENCE LIVERMORE NATIONAL LABORATORY
METERS
MULTIPLICITY
NEUTRONS
PLUTONIUM
RADIATIONS
RADIOACTIVITY
STEELS