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U.S. Department of Energy
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Aerial radiological surveys of ERDA's Oak Ridge facilities and vicinity (Survey period: 1973--1974)

Technical Report ·
DOI:https://doi.org/10.2172/5429519· OSTI ID:5429519
Airborne radiological surveys of the area surrounding ERDA's Oak Ridge facilities were made in September 1973 and again in November 1974 by EG G, Inc. The surveys consisted of airborne measurements of gamma radiation from both natural and man-made radioisotopes on (or in) the terrain surface in and around each of the nuclear related facilities. The measurement sensitivity and data processing procedures, coupled with total area coverage, provided both a broad overview and a detailed definition of the extent of gamma producing isotopes existing in the area. Specific areas containing radioactive sources producing gamma exposure rates of 1/2 {mu}R/h or so at survey altitude (75m) were located; resulting radiation levels were defined and the responsible isotopes identified. Primary gamma producing isotopes found were {sup 137}Cs, {sup 60}Co, {sup 234}Pa, {sup 208}Tl, {sup 235}U, {sup 214}Bi, and {sup 40}K. Results are presented as radiation intensity isopleths superimposed on maps or photographs of the area of interest. Related gamma energy spectral information is reported, together with a discussion of the location, activity and concentration of sources and contaminants in specific areas. 19 refs., 24 figs.
Research Organization:
EG and G Energy Measurements, Inc., Las Vegas, NV (United States). Las Vegas Area Operations
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC08-88NV10617
OSTI ID:
5429519
Report Number(s):
EGG-1183-1682; ON: DE91017000
Country of Publication:
United States
Language:
English

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