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Evaluation of Annual External Radiation Doses at Values Near Minimum Detection Levels of Dosimeters at the Hanford Nuclear Facility



Details

  • Personal Author:
  • Description:
    In epidemiological studies of workers exposed to ionizing radiation, recognition of the limitations of available radiation dosimetry dada is important to interpretation of a study's findings. This paper provides an investigation of external radiation dosimetry data for workers at the Hanford nuclear facility, focusing on changes over time in practices for recording dosimetry measurements that were between zero and the minimum detectable level of a radiation dosimeter. Reported annual external radiation doses for the years 1944-1989 were examined for 33.459 workers; these records are the sum of periodic dosimetry measurements within a calendar year. For each year, the proportion of annual external doses with values in the range of minimum detectable level was examined. Contrary to previous researchers, we conclude that there is evidence that dosimetry measurements with values between zero and the minimum detectable level may have been recorded as zero in some historical periods. This conclusion is supported by evidence drawn from historical documentation about radiation dosimetry practices at the Hanford facility. Although workers at the Hanford facility have relatively complete and detailed external radiation dosimetry data compared to some other nuclear facilities that began operation in the 1940s, these data may suffer limitations related to dosimetry recording practices at the facility. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    1053-4245
  • Document Type:
    Text
  • Funding:
    Grant
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    27-35
  • Volume:
    10
  • Issue:
    1
  • NIOSHTIC Number:
    nn:20022155
  • Citation:
    J Expo Anal Environ Epidemiol 2000 Jan-Feb; 10(1):27-35
  • Contact Point Address:
    Dr. David Richardson, Department of Epidemiology, School of Public Health, CB #8050, Nationsbank Plaza, University of North Carolina, Chapel Hill, NC 27599-8050
  • Email:
    drichard@sph.unc.edu
  • Federal Fiscal Year:
    2000
  • Performing Organization:
    Department of Epidemiology, School of Public Health, University of North Carolina, Chapel Hill, North Carolina
  • Peer Reviewed:
    True
  • Start Date:
    19960930
  • Source Full Name:
    Journal of Exposure Analysis and Environmental Epidemiology
  • End Date:
    20010929
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:2076761dccfdda7bfedd189714ea869731abcf5de9cd56a11b2c9cc3609f8c1a7ccb7381f84d7809537355bfdfcd21168a9d2788e235a47404247264c8c731d5
  • Download URL:
  • File Type:
    Filetype[PDF - 110.20 KB ]
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