Examination of DWPF Melter Materials After 8 Years of Service

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Description

The first Defense Waste Processing Facility high level radioactive waste glass melter was successfully operated for eight years. Recent failure of melter heaters and decrease in glass production necessitated its removal. Prior to removing the melter from the facility, a remote in situ visual inspection of the refractory and Inconel(TM) 690 components was performed. The vapor space and glass contact refractory blocks were in excellent condition, showing little evidence of spalling or corrosion. Inconel 690 top head components and lid heaters in the vapor space were also in good condition, considering the service. Upper electrodes experienced significant deflection, which probably ... continued below

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Imrich, K. April 29, 2003.

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Description

The first Defense Waste Processing Facility high level radioactive waste glass melter was successfully operated for eight years. Recent failure of melter heaters and decrease in glass production necessitated its removal. Prior to removing the melter from the facility, a remote in situ visual inspection of the refractory and Inconel(TM) 690 components was performed. The vapor space and glass contact refractory blocks were in excellent condition, showing little evidence of spalling or corrosion. Inconel 690 top head components and lid heaters in the vapor space were also in good condition, considering the service. Upper electrodes experienced significant deflection, which probably resulted from extended operation in excess of 1150 degrees C. Condition of the melter components examined during the remote visual inspection is summarized in this paper.

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  • Other Information: PBD: 29 Apr 2003

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  • Report No.: WSRC-MS-2003-00318
  • Grant Number: AC09-96SR18500
  • DOI: 10.2172/810561 | External Link
  • Office of Scientific & Technical Information Report Number: 810561
  • Archival Resource Key: ark:/67531/metadc737175

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  • April 29, 2003

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  • Oct. 18, 2015, 6:40 p.m.

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  • May 5, 2016, 1:48 p.m.

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Imrich, K. Examination of DWPF Melter Materials After 8 Years of Service, report, April 29, 2003; South Carolina. (digital.library.unt.edu/ark:/67531/metadc737175/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.