A Radiological Characterization of the KIWI-I Vehicle

Riedhauser, S R

doi:10.2172/785809

Title: A Radiological Characterization of the KIWI-I Vehicle

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Abstract

A review was conducted of the previous Kiwi characterization to understand apparent differences in measured contamination levels observed during recent field work between Kiwi-reported activities and values from another system. The review assessed how the data were processed as well as the assumptions behind the measurement techniques employed. The review included a reassessment of how calculations of conversion factors were preformed. The review also checked for errors in the measurements or calculations of the data collected at these sites. In addition, new characterization measurements were made and new characterization techniques investigated for the Kiwi detector array. These measurements and techniques led to new calculations of conversion factions for the array, which are compared to the previous conversion factors. The new measurements confirmed that the Kiwi detectors are very reproducible in measuring the photopeak count rate from a surface distribution of activity ({+-}3%). Finally, a review was conducted of the various parameters which describe the exponential distribution of activity with depth in the soil. New values have been assigned to the relaxation length and the averaging depth. When combined with the new characterization measurements, they produce a 75% increase over the previous conversion factor.

Authors:: Riedhauser, S R

Publication Date:: Mon Mar 01 00:00:00 EST 1999

Research Org.:: Bechtel Nevada Corporation (US)

Sponsoring Org.:: US Department of Energy (US)

OSTI Identifier:: 785809

Report Number(s):: DOE/NV/11718-298
TRN: US0108506

DOE Contract Number:: AC08-96NV11718

Resource Type:: Technical Report

Resource Relation:: Other Information: PBD: 1 Mar 1999

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 54 ENVIRONMENTAL SCIENCES; CONTAMINATION; DATA ACQUISITION SYSTEMS; DATA PROCESSING; SITE CHARACTERIZATION; VEHICLES; RADIATION DETECTORS; SOILS

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                    Riedhauser, S R. A Radiological Characterization of the KIWI-I Vehicle.  United States: N. p., 1999. 
        Web.  doi:10.2172/785809.

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                    Riedhauser, S R. A Radiological Characterization of the KIWI-I Vehicle.  United States.  https://doi.org/10.2172/785809

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                    Riedhauser, S R. 1999.  
        "A Radiological Characterization of the KIWI-I Vehicle".  United States.  https://doi.org/10.2172/785809.  https://www.osti.gov/servlets/purl/785809.

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@article{osti_785809,

  title        = {A Radiological Characterization of the KIWI-I Vehicle},

  author       = {Riedhauser, S R},

  abstractNote = {A review was conducted of the previous Kiwi characterization to understand apparent differences in measured contamination levels observed during recent field work between Kiwi-reported activities and values from another system. The review assessed how the data were processed as well as the assumptions behind the measurement techniques employed. The review included a reassessment of how calculations of conversion factors were preformed. The review also checked for errors in the measurements or calculations of the data collected at these sites. In addition, new characterization measurements were made and new characterization techniques investigated for the Kiwi detector array. These measurements and techniques led to new calculations of conversion factions for the array, which are compared to the previous conversion factors. The new measurements confirmed that the Kiwi detectors are very reproducible in measuring the photopeak count rate from a surface distribution of activity ({+-}3%). Finally, a review was conducted of the various parameters which describe the exponential distribution of activity with depth in the soil. New values have been assigned to the relaxation length and the averaging depth. When combined with the new characterization measurements, they produce a 75% increase over the previous conversion factor.},

  doi          = {10.2172/785809},

  url          = {https://www.osti.gov/biblio/785809},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon Mar 01 00:00:00 EST 1999},

  month        = {Mon Mar 01 00:00:00 EST 1999}

}

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