CORROSION OF LEAD SHIELDING IN NUCLEAR MATERIALS PACKAGES

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Inspection of United States-Department of Energy (US-DOE) model 9975 nuclear materials shipping package revealed corrosion of the lead shielding induced by off-gas constituents from organic components in the package. Experiments were performed to determine the corrosion rate of lead when exposed to off-gas or degradation products of these organic materials. The results showed that the room temperature vulcanizing (RTV) sealant was the most corrosive organic species followed by the polyvinyl acetate (PVAc) glue. The fiberboard material induced corrosion to a much lesser extent than the PVAc glue and RTV, and only in the presence of condensed water. The results indicated ... continued below

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Subramanian, K & Kerry Dunn, K November 16, 2007.

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Inspection of United States-Department of Energy (US-DOE) model 9975 nuclear materials shipping package revealed corrosion of the lead shielding induced by off-gas constituents from organic components in the package. Experiments were performed to determine the corrosion rate of lead when exposed to off-gas or degradation products of these organic materials. The results showed that the room temperature vulcanizing (RTV) sealant was the most corrosive organic species followed by the polyvinyl acetate (PVAc) glue. The fiberboard material induced corrosion to a much lesser extent than the PVAc glue and RTV, and only in the presence of condensed water. The results indicated faster corrosion at temperatures higher than ambient and with condensed water as expected. A corrosion rate of 0.05 mm/year measured for coupons exposed to the most aggressive conditions was recommended as a conservative estimate for use in package performance calculations.

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  • Journal Name: Packaging, Transport, Storage and Security of Radioactive Material

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  • Report No.: WSRC-STI-2007-00668
  • Grant Number: DE-AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 921680
  • Archival Resource Key: ark:/67531/metadc894762

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  • November 16, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 12, 2016, 5:46 p.m.

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Subramanian, K & Kerry Dunn, K. CORROSION OF LEAD SHIELDING IN NUCLEAR MATERIALS PACKAGES, article, November 16, 2007; [Aiken, South Carolina]. (digital.library.unt.edu/ark:/67531/metadc894762/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.