Click here to make tpub.com your Home Page

Page Title: Table 6.5. Gamma Dose Rates Along an Arm Phantom in Contact with a Steel Can Containing 1 kg of Plutonium Dioxide in an Uncon...
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 



DOE-STD-1128-98
Table 6.5. Gamma Dose Rates Along an Arm Phantom in Contact with a Steel Can Containing
1 kg of Plutonium Dioxide in an Uncontaminated Glove Box
Gamma Dose Rates, mrad/h
Neoprene Glove
Lead-Loaded Glove
Position
330 + 6
Ring Finger
272 + 25
Palm
292 + 9
220 + 16
Back of Hand
72 + 2
65 + 1
Wrist
Inside
84 + 6
56 + 5
Outside
31 + 1
24 + 1
Forearm
Inside
22 + 0.4
12 + 1
Outside
4.4 + 0.1
3.8 + 0.4
Elbow
Inside
4.8 + 0.1
2.6 + 0.2
Outside
1.4 + 0.1
1.8 + 0.4
Front
2.9 + 0.2
2.1 + 0.1
Bottom of humerus
2.2 + 0.1
2.5 + 0.5
Lower mid-arm
7.1 + 0.1
3.9 + 0.3
Lower mid-humerus
3.8 + 0.1
2.3 + 0.2
Upper mid-arm
2.4 + 0.1
2.5 + 0.2
Upper mid-humerus
1.8 + 0.1
1.8 + 0.2
Top of arm
0.9 + 0.03
2.2 + 0.8
Top of humerus
1.1 + 0.2
1.3 + 0.1
The gamma energy spectra from plutonium sources are highly variable,
depending on the amount of shielding present, including self-shielding.
Small lightly shielded sources, such as dust layers on the interior of
glove boxes, are dominated by L X-rays and the 60-keV photons from
241Am, the decay progeny of 241Pu.
But the gamma energy spectra are quite different in storage vaults and
other facilities where the plutonium is encapsulated. In those cases, the
low-energy photons have been shielded out, and the spectrum is
dominated by higher photon energies. Note that plutonium metal buttons
or cans of plutonium oxide prepared for storage are self-shielded, and
high-energy photons from decay progeny such as 237U become
increasingly important.
6-9


Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business