A study of detailed dosimetry records for a selected group of workers included in the Hanford mortality study
Detailed dosimetry data from microfiche and microfilm in source records for the years 1944--1978 for 139 Hanford workers were examined. Information on these records was compared with computerized dose equivalent estimates used in mortality analyses. Because of difficulties in reading some early source records, and because of variation in the format of records and in algorithms for calculating whole body dose, this validation was difficult. However, apparent discrepancies in cumulative dose were less than 0.1 rem for 88% of the workers in this study, never exceeded 1.5 rem, and would be unlikely to distort conclusions of dose-response analyses. Most discrepancies occurred in early years of Hanford operations, especially 1944--46, with very few problems with dose estimates from the 1960's and 1970's. The study also provided data dosimetry practices, by calendar year, on frequency of monitoring, the number and proportion of dosimeters yielding positive results, and the magnitude of doses recorded for individual dosimeters. 7 refs., 5 figs., 13 tabs.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6616008
- Report Number(s):
- PNL-7439; ON: DE91000064
- Country of Publication:
- United States
- Language:
- English
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