Quantcast Management of Plutonium-Contaminated Wastes
 

Click here to make tpub.com your Home Page

Page Title: Management of Plutonium-Contaminated Wastes
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
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
Characterization, Control and Accounting
Up
Design Considerations - index
Next
Plutonium Storage Facilities


DOE-HDBK-1132-99
Alamos that greatly reduces the amount of waste generated. Electrorefining is
used to purify plutonium, leaving impurities behind in an anode " eel"that
h
requires further processing, usually by aqueous means. Relatively pure
plutonium oxide can be reduced to metallic form by direct oxide reduction, which
requires dissolving plutonium oxide in a calcium chloride salt and introducing
metallic calcium as the reducing agent. The resulting calcium oxide can be
converted to calcium chloride by reacting with a chlorinating agent. Note that the
media for pyrochemistry are typically chloride salts, and require special aqueous
process equipment specifications to minimize corrosion. Likewise, the crucibles
used to contain the melt also should be processed into a waste form or
processed for extraction of plutonium. Exhaust ventilation, handling devices, and
local furnace cooling should take thermally hot operations into account.
Design of materials management and storage systems should attempt to achieve
inventory extension to the maximum extent possible; that is, to minimize the
frequency with which inventory must be taken and reconciled. This can be
accomplished by use of a vault system with a long-term storage vault that can be
locked down for a year or more, and a day vault that contains the items that will
be used within the year. Sizing of process equipment should recognize the
down-time required to complete inventory actions. These actions include
cleaning out process equipment, wiping down gloveboxes, consolidating
materials, conducting nondestructive assays, and reconciling inventory values.
Management of Plutonium-Contaminated Wastes . Plutonium-contaminated
and radioactive wastes generated from the PPHF should be managed and
handled safely and effectively. The process system should be designed to
minimize the generation of wastes at the source. The waste management system
should be designed to limit the release of radioactive materials to the
environment.
Process liquid waste should be collected in the liquid waste treatment system
and contained in geometrically safe vessels for temporary storage, sampling, and
neutralization. Liquid waste should be concentrated by evaporation, and off-gas
from the liquid waste evaporator should be sampled for radioactive materials and
I-57


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

Integrated Publishing, Inc.