Twenty-second ORNL intercomparison of criticality accident dosimetry systems, August 12-16, 1985

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The twenty-second in a series of criticality accident dosimetry intercomparison studies was conducted at the Oak Ridge National Laboratory's Dosimetry Applications Research Facility during August 12-16, 1985. The Health Physics Research Reactor operated in the pulse mode over Storage Pit No. 1 was used to simulate three criticality accidents with different radiation fields. Participants from nine organizations measured neutron doses between 0.36 and 3.78 Gy and gamma doses between 0.22 and 0.80 Gy at area monitoring stations and on phantoms. Approximately 68% of all neutron dose estimates based on foil activation, thermoluminescent, hair activation, and blood sodium activation methods were ... continued below

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Pages: 46

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Swaja, R.E.; Oyan, R. & Sims, C.S. May 1, 1986.

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Description

The twenty-second in a series of criticality accident dosimetry intercomparison studies was conducted at the Oak Ridge National Laboratory's Dosimetry Applications Research Facility during August 12-16, 1985. The Health Physics Research Reactor operated in the pulse mode over Storage Pit No. 1 was used to simulate three criticality accidents with different radiation fields. Participants from nine organizations measured neutron doses between 0.36 and 3.78 Gy and gamma doses between 0.22 and 0.80 Gy at area monitoring stations and on phantoms. Approximately 68% of all neutron dose estimates based on foil activation, thermoluminescent, hair activation, and blood sodium activation methods were within +-25% of reference values. About 44% of all gamma results measured using thermoluminescent dosimeters (TLD-700 or CaSO/sub 4/ phosphors) were within 20% of reference doses. The generally poor measurement accuracy exhibited in this study indicates a need for continuing ORNL accident dosimetry intercomparison and training programs.

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Pages: 46

Notes

NTIS, PC A03/MF A01.

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  • 22. nuclear accident dosimetry intercomparison study, Oak Ridge, TN, USA, 9 Aug 1985

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  • Other: DE86011671
  • Report No.: ORNL-6276
  • Report No.: CONF-850822-Summs.
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 5482342
  • Archival Resource Key: ark:/67531/metadc1092191

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Office of Scientific & Technical Information Technical Reports

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  • May 1, 1986

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  • Feb. 10, 2018, 10:06 p.m.

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  • March 26, 2018, 1:28 p.m.

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Swaja, R.E.; Oyan, R. & Sims, C.S. Twenty-second ORNL intercomparison of criticality accident dosimetry systems, August 12-16, 1985, article, May 1, 1986; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1092191/: accessed November 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.