The use of Lithium Fluoride (LiF) Thermoluminescent Dosimeters (TLD) have been in use at a radiographic facility for over three years. The facility consists of two radiographic sources each with a dose rating of ∼4-rad at 1 m. The calibration and fielding of LiF TLD's will be examined for accuracy and long term standard deviation of these measurements. LiF TLD's will be evaluated in single point measurements and multi-point arrays. Improved multi-point arrays will be compared to previous array data. The LiF TLD's will also be compared to Pin Diodes for routine measurements and evaluation of shielding around the sources.
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