TLD Badges

2026-11-03

The Thermoluminescent Dosimetry System ( TLD ) required must qualify and quantify beta , x - ray , gamma ray and neutron exposure . The badge element ( crystals ) should be “ tissue equivalent ” for photon response . The TLD must monitor within the following : 1 . Photon energy response from 16 KEV to 6 . 1 MEV . 2 . Beta energy response from TL - 204 to SR - 90 -/ Y - 90 3 . Certified by NVLAP for neutron response . 4 . Respond from 10MR to 10REM The monitor must be equipped to approximate whole body dose . The nuclear density and asphalt content test equipment used by the Kentucky Transportation Cabinet contains the following sources : 1 . Cesium 137 sealed source 9 . 0 millicuries 2 . Americium 241 sealed source 4 . 4 millicuries 3 . Americium 241 sealed source 100 millicuries 4 . Californium 252 sealed source 100 millicuries or less Monitors will be sorted into thirteen groups . Thirteen control monitors will be required . All groups will be sent to one control location for distribution . Group information will be supplied . Vendor shall provide the following as part of their unit price : 1 . TLD program must offer quarterly processing 2 . Set - up charge 3 . Addition of service 4 . Deletion of service 5 . Control monitors 6 . Quarterly reports 7 . Duplicate reports 8 . Shipping costs Company must be in good standing and in strict compliance with ( NVLAP ) National Voluntary Laboratory Accreditation Program .

Kentucky

2026-05-08