AEROSOL SAMPLING AND CHARACTERIZATION FOR HAZARD EVALUATION, OCTOBER 1, 1977 - SEPTEMBER 30, 1978 PDF Download
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Author: R. C. Scripsick
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Category :
Languages : en
Pages : 0
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Author: R. C. Scripsick
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ISBN:
Category :
Languages : en
Pages : 0
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Author: Ronald C. Scripsick
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Category :
Languages : en
Pages : 12
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Measurements of the dilution of air contaminants between worker breathing zone and area air samplers were made by releasing a test fluorescent aerosol in workrooms equipped with aerosol surveillance systems. These data were used to evaluate performance and suggest improvements in design of alarming air monitor systems. In one workroom studied, average half-hour breathing zone air concentration needed to trigger alarm was found to be 960 times the maximum permissible air concentration for occupational exposure to soluble 239Pu (MPC/sub a/). It was shown that alternative monitor placement in this room could result in decreasing average triggering concentration to 354 times the MPC/sub a/. Analysis of data from impaction-autoradiographic sizing comparison studies showed average disintegration to track ratio called track efficiency factor, to be 2.7 +- 0.4
![Aerosol Sampling and Characterization for Hazard Evaluation. Progress Report, October 1, 1977-September 30, 1978. [239Pu Aerosol Monitor Performance in Work Area]. PDF](https://books.google.com/books/content/images/frontcover/tntlnQAACAAJ?fife=w80-h100)
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Category :
Languages : en
Pages :
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Measurements of the dilution of air contaminants between worker breathing zone and area air samplers were made by releasing a test fluorescent aerosol in workrooms equipped with aerosol surveillance systems. These data were used to evaluate performance and suggest improvements in design of alarming air monitor systems. In one workroom studied, average half-hour breathing zone air concentration needed to trigger alarm was found to be 960 times the maximum permissible air concentration for occupational exposure to soluble 239Pu (MPC/sub a/). It was shown that alternative monitor placement in this room could result in decreasing average triggering concentration to 354 times the MPC/sub a/. Analysis of data from impaction-autoradiographic sizing comparison studies showed average disintegration to track ratio called track efficiency factor, to be 2.7 +- 0.4.
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Category : Power resources
Languages : en
Pages : 756
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Author: S. K. Loyalka
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Category :
Languages : en
Pages : 0
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Author: Los Alamos National Laboratory
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Category : Research
Languages : en
Pages : 348
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![Aerosol Sampling and Characterization for Hazard Evaluation. Progress Report, July 1, 1975--September 30, 1976. [Pu Aerosols]. PDF](https://books.google.com/books/content/images/frontcover/uHWJAQAACAAJ?fife=w80-h100)
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Languages : en
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A draft Manual of Recommended Practice for Aerosol Sampling and Evaluation was completed and sent to the Energy Research and Development Administration (ERDA) Division of Safety, Standards, and Compliance (DSSC) for review. The results of the Survey of Sampling Techniques for Defining Respirable Concentration and/or Particle Size Characteristics of Aerosols were published as LA-6087. The need for greater standardization of ERDA aerosol sampling techniques was indicated. The Aerosol Training Course was presented in 11 sessions to 85 persons. General elements of good practice were emphasized, and recommendation of specific sampling devices or procedures was avoided. A system for estimating dissolution rates of plutonium aerosols was developed. Studies indicate that plutonium aerosols found in the field have a rapid initial dissolution phase followed by a slower secondary phase. Three methods of particle sizing air samples collected on membrane filters were investigated. The most promising was a scanning electron microscope electron microprobe (SEM-EMp) method. An operating plutonium handling facility was a model for development of techniques to evaluate aerosol surveillance systems performance. Airborne contamination records were studied. The physicochemical properties of a plutonium aerosol existing in the facility were investigated in relation to plutonium handling operations. The techniques developed have indicated some areas of the aerosol surveillance system that need improvement.
Author: Los Alamos Scientific Laboratory
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ISBN:
Category : Research
Languages : en
Pages : 226
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Author: United States. Bureau of Mines
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Category : Aerosols
Languages : en
Pages : 15
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Author: United States. Environmental Protection Agency
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Category :
Languages : en
Pages : 1760
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