The Defense Waste Processing Facility (DWPF) at the Savannah River Site (SRS) is used to immobilize high-level radioactive waste by mixing it with glass-forming chemicals and heating the mixture at 1050 �C to form borosilicate glass logs. An Isolok Sampler and supporting equipment to control the sampling of the Sludge Receipt and Adjustment Tank (SRAT) sampling within the DWPF sample cells has been installed in the facility and operating successfully for approximately 24 months. An Isolok Sampler for the Slurry Mix Evaporator (SME) is scheduled for installation in November 2012. This sampling technology is a replacement for the existing Hydragard sampler and is providing significant cost savings due to reduced in-cell contamination, improved equipment reliability, lower equipment fabrication costs and improved ergonomics. Details of the qualification testing program, shielded cell installation, and operation of the Isolok sampler will be discussed.

Installation and performance of Isolok samplers for high-level radioactive sludge process tanks in the Defense Waste Processing Facility

245th National Meeting (2013)

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