Evaluation of discrepancies between thermoluminescent dosimeter and direct-reading dosimeter results

Technical Report · Thu Jul 01 04:00:00 EDT 1993

DOI:https://doi.org/10.2172/10177407· OSTI ID:10177407

Shaw, K R

Currently at Oak Ridge National Laboratory (ORNL), the responses of thermoluminescent dosimeters (TLDs) and direct-reading dosimeters (DRDs) are not officially compared or the discrepancies investigated. However, both may soon be required due to the new US Department of Energy (DOE) Radiological Control Manual. In the past, unofficial comparisons of the two dosimeters have led to discrepancies of up to 200%. This work was conducted to determine the reasons behind such discrepancies. For tests conducted with the TLDs, the reported dose was most often lower than the delivered dose, while DRDs most often responded higher than the delivered dose. Trends were identified in personnel DRD readings, and ft was concluded that more training and more control of the DRDs could improve their response. TLD responses have already begun to be improved; a new background subtraction method was implemented in April 1993, and a new dose algorithm is being considered. It was concluded that the DOE Radiological Control Manual requirements are reasonable for identifying discrepancies between dosimeter types, and more stringent administrative limits might even be considered.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10177407
• Report Number(s): ORNL/TM--12365; ON: DE93017986
• Country of Publication: United States
• Language: English

Related Subjects

560101
61 RADIATION PROTECTION AND DOSIMETRY
ACCURACY
COMPARATIVE EVALUATIONS
DOSEMETERS
DOSIMETRY AND MONITORING
HUMAN FACTORS
OAK RIDGE
ORNL
PERSONNEL
PERSONNEL DOSIMETRY
PERSONNEL MONITORING
RADIATION MONITORING
RADIATION PROTECTION
THERMOLUMINESCENT DOSEMETERS
TRAINING