Plutonium Immobilization Project (PIP) Precursor Material Calcine Temperature

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Description

As a result of the end of the Cold War, approximately 50 metric tons of plutonium are no longer needed and have been identified for disposition. A ceramic waste form is the chosen option for immobilization of the excess plutonium. The plutonium ceramic form then will be encased in high-level waste glass using can-in-canister technology for final disposition. The precursor materials are the non-radioactive components that are added to the plutonium feed stream to form the desired phases in the immobilization product. The precursor materials are blended and calcined prior to being mixed with the plutonium feed stream. The purpose ... continued below

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Cozzi, A.D. July 29, 1999.

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Description

As a result of the end of the Cold War, approximately 50 metric tons of plutonium are no longer needed and have been identified for disposition. A ceramic waste form is the chosen option for immobilization of the excess plutonium. The plutonium ceramic form then will be encased in high-level waste glass using can-in-canister technology for final disposition. The precursor materials are the non-radioactive components that are added to the plutonium feed stream to form the desired phases in the immobilization product. The precursor materials are blended and calcined prior to being mixed with the plutonium feed stream. The purpose of the calcine step is to remove any physical or chemical water retained in the precursors and convert any hydroxides or carbonates to the oxides. Initially, a temperature of 750 degrees C for a period of one hour was chosen for the calcining of the precursors. In this effort, several different calcine temperatures were investigated to evaluate the effect on initial phase formation (in the calcined precursors), thermal expansion of the pressed pellets during heating, and mineralogy and porosity of the final product.

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Medium: P; Size: vp.

Notes

INIS; OSTI as DE00009313

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  • Other Information: PBD: 29 Jul 1999

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  • Report No.: WSRC-TR-99-00053
  • Grant Number: AC09-96SR18500
  • DOI: 10.2172/9313 | External Link
  • Office of Scientific & Technical Information Report Number: 9313
  • Archival Resource Key: ark:/67531/metadc794549

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Creation Date

  • July 29, 1999

Added to The UNT Digital Library

  • Dec. 19, 2015, 7:14 p.m.

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  • May 5, 2016, 4:26 p.m.

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Cozzi, A.D. Plutonium Immobilization Project (PIP) Precursor Material Calcine Temperature, report, July 29, 1999; South Carolina. (digital.library.unt.edu/ark:/67531/metadc794549/: accessed October 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.