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 that was 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 used in the construction of the packaging, followed by polyvinyl acetate (PVAc) glue. Fiberboard material, also used in the construction of the packaging induced corrosion to a much lesser extent than the ... continued below

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Subramanian, K; Kerry Dunn, K & Joseph Murphy, J July 18, 2008.

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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 that was 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 used in the construction of the packaging, followed by polyvinyl acetate (PVAc) glue. Fiberboard material, also used in the construction of the packaging induced corrosion to a much lesser extent than the PVAc glue and RTV sealant, and only in the presence of condensed water. The results indicated faster corrosion at temperatures higher than ambient and with condensed water. In light of these corrosion mechanisms, the lead shielding was sheathed in a stainless steel liner to mitigate against corrosion.

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

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  • Report No.: WSRC-STI-2008-00361
  • Grant Number: DE-AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 935223
  • Archival Resource Key: ark:/67531/metadc899965

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  • July 18, 2008

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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 & Joseph Murphy, J. CORROSION OF LEAD SHIELDING IN NUCLEAR MATERIALS PACKAGES, article, July 18, 2008; [Aiken, South Carolina]. (digital.library.unt.edu/ark:/67531/metadc899965/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.