Year
1989
Abstract
The Analytical Development Division at the Savannah River Site has developed an online radionuclide analyzer system for the evaporator overheads in H-Canyon. The analyzer system consists of two components: An improved online alpha monitor (OLAM-100S), and a sodium iodide gamma detector. The OLAM-100S was developed in our laboratories for monitoring alpha activity in aqueous streams. The gamma analyzer is a commercially available 2\" x 2\" Nal crystal. An easy-to-install sampler interface couples the analyzer with the sample stream. A degasser is used to provide an air free stream which flows through two sample cells connected in series. The flow cell, detectors, and necessary shielding for the analyzer are housed in a Lexan® box attached to the existing sampler. A prototype system was set up and tested in our analyzer development and demonstration facility. The first analyzer of this type is scheduled for installation in the H-Canyon evaporator overheads streams. The system will have numerous applications plantwide.