Accession Number : ADA306367
Title : Determining the Effects of Waste Coal Ash on Landfill Radon Levels.
Descriptive Note : Master's thesis,
Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
Personal Author(s) : Krysiak, Richard S., Jr
PDF Url : ADA306367
Report Date : DEC 1995
Pagination or Media Count : 165
Abstract : Coal contains trace amounts of the primary radionuclides (40)K, and elements of the 4n ((232) Th), 4n+2 ((238) U), and 4n+3 ((235) U) series including(220) Rn and (222) Rn. Combustion of coal by electric power and heat plants result in concentration of noncombustible mineral matter, including most of the radionuclides, in the coal ash. The increased radiation due to the concentration of radionuclides is known as technologically enhanced natural radiation. The purpose of this research was to determine the effects of landfilled coal ash on one specific aspect of technologically enhanced natural radiation, radon levels. Soil samples were collected from the ash landfill at Wright Patterson AFB and from several background locations, analyzed using gamma spectroscopy, and the (226)Ra activities compared. The landfill (226)Ra activity (4.78 plus or minus 1.58 pCi/g) was 2.95 times higher than background (1.62 plus or minus 0.04 pCi/g). Estimated outdoor and indoor radon emanation at the landfill are predicted to be enhanced by the same factor compared to background. Additionally, the indoor radon concentration calculated in a hypothetical structure built on the landfill (11.48 pCi/l) was above the Environmental Protection Agency's action level of 4.0 pCi/l. p10
Descriptors : *WASTES, *LANDFILLS, *COAL, *ASHES, *RADON, EMISSION, SPECTROSCOPY, THESES, COMBUSTION, SOILS, SAMPLING, GAMMA RAYS, ELECTRIC POWER, MINERALS, RADIOACTIVE ISOTOPES, OUTDOOR, NATURAL RADIOACTIVITY.
Subject Categories : Solid Wastes Pollution and Control
Radiation and Nuclear Chemistry
Geology, Geochemistry and Mineralogy
Distribution Statement : APPROVED FOR PUBLIC RELEASE