Idaho National Laboratory Department of Energy Lab Accreditation Program (INL - DOELAP)

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The DOELAP irradiators are used to expose dosimetry badges to specific doses of radiation in order to certify their clients' dosimetry program. Hopewell Designs, Inc. designed, built, and installed computer-automated control systems for the six irradiators that were already in use at this site. To assure that all systems operate the same and to facilitate software maintenance, we developed a single self-configuring program to controls all six ranges. This program not only operates the irradiators, but also includes extensive error checking and redundant measurements to assure that the doses are delivered accurately.

Irradiators at this site:

Gamma Beam Irradiators There are two Gamma Beam Irradiators; one with a single large Cs source and one with a single small Cs source. Both are used to deliver gamma dose to dosimeters. TLD badges are mounted on phantoms, and an off-axis ion chamber is used to confirm the delivered dose. X-Ray Irradiator The X-Ray Irradiator can deliver dose for up to 40 beam codes as well as k-fluorescence techniques. It consists of a 320 kV X-Ray set, shielded enclosure, shutter, and transmission chamber. Dosimetry is mounted on different types of phantoms depending on the type of badge being exposed. Beta Beam Irradiator Americium Irradiator Uranium Slab Irradiator

Hopewell Designs, Inc. 5940 Gateway Drive, Alpharetta, GA 30004 770-667-5770 / FAX 770-667-7539 sales@hopewelldesigns.com