Quantcast Residual radionuclides in soil

 

Click here to make tpub.com your Home Page

Page Title: Residual radionuclides in soil
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
Residual Radioactivity Levels - doe-std-1128-98_ch10247
Up
DOE Standard Guide of Good Practices for Occupational Radiological Protection In Plutonium Facilities
Next
Residual radionuclides in air and water - doe-std-1128-98_ch10249


DOE-STD-1128-98
DOE Order 5400.5, Ch. 2 (DOE, 1993c) also provides the following guidelines for
(1) residual concentrations of radionuclides in soil, (2) concentrations of airborne
radon decay products, (3) external gamma radiation, (4) surface contamination, and
(5) radionuclide concentrations in air or water:
-- Residual radionuclides in soil - Generic guidelines for thorium and radium
(226Ra, 228Ra, 230Th, and 232Th) are 5 pCi/g averaged over the first 15 cm of soil
below the surface and 15 pCi/g averaged over 15-cm-thick layers of soil more
than 15 cm below the surface. For other radionuclides in soil (e.g., plutonium),
specific guidelines should be derived from the basic dose limit by means of an
environmental pathway analysis using specific property data where available.
Residual concentrations of radioactive material in soil are defined as those in
excess of background concentrations averaged over an area of 100 m2.
-- Airborne radon decay products - Applicable generic guidelines are found in
40 CFR 192 (EPA, 1992b). In any occupied or habitable building, the objective
of remedial action should be, and a reasonable effort should be made to
achieve, an annual average (or equivalent) radon decay product concentration
(including background) not to exceed 0.02 WL. Remedial actions by DOE are
not required to comply with this guideline when there is reasonable assurance
that residual radioactive material is not the source of the radon concentration.
-- External gamma radiation - The average level of gamma radiation inside a
building or habitable structure on a site to be released without restrictions
should not exceed the background level by more than 20 R/h.
-- Surface contamination - The DOE guidelines on transuranic surface
contamination levels are given in a DOE memorandum dated November 17,
1995, "Application of DOE 5400.5 requirements for release and control of
property containing residual radioactive materials," the guideline values are as
follows:
Guidelines
Removable Contamination
20 dpm/100 cm2
Total (Fixed plus Removable Contamination)
500 dpm/100 cm2
10-4


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

Integrated Publishing, Inc.