Neutron dosimetry in containment of a pressurized water reactor utilizing the Panasonic UD-802 dosimetry system

Technical Report · Sun Jan 01 00:00:00 EST 1984

OSTI ID:6373999

Kralick, S C

The Panasonic UD-802 dosimeter was evaluated as a potential neutron dosimeter for use in containment of a PWR. The Panasonic UD-802 dosimeter, although designed as a beta and gamma dosimeter, is also sensitive to neutrons. UD-802 dosimeters were mounted on polyethylene phantoms and irradiated to known doses at selected locations in containment. The known neutron dose equivalents were determined based on remmeter dose rate measurements and stay times. The thermoluminescent response of the dosimeters and the known neutron dose equivalents were used to obtain a calibration factor at each location. The average calibration factor was 3.7 (unit of dosimeter response per mrem) and all calibration factors were within +-30% of this mean value. The dosimeter distance from the phantom was found to have minimal effect on the response but the system was directionally dependent, necessitating a correction in the calibration factor. The minimum significant dosimeter response was determined independent of any calibration factor. The minimum significant response of the UD-802 to neutrons is a function of the corresponding gamma exposure rate. It is concluded that the Panasonic UD-802 dosimeter can be used for neutron dosimetry in PWR containment.

• Research Organization: Oak Ridge Associated Universities, Inc., TN (USA)
• DOE Contract Number: AC05-76OR00033
• OSTI ID: 6373999
• Report Number(s): DOE/OR/00033-T75; ON: DE85000551
• Resource Relation: Other Information: Portions are illegible in microfiche products. Thesis. Submitted to Univ. of North Carolina, Chapel Hill
• Country of Publication: United States
• Language: English

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