Idaho Chemical Processing Plant low-level waste grout stabilization development program FY-96 status report

One of 52 reports in the series: Fiscal Year 1996 available on this site.

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Description

The general purpose of the Grout Stabilization Development Program is to solidify and stabilize the liquid low-level wastes (LLW) generated at the Idaho Chemical Processing Plant (ICPP). It is anticipated that LLW will be produced from the following: (1) chemical separation of the tank farm high-activity sodium-bearing waste; (2) retrieval, dissolution, and chemical separation of the aluminum, zirconium, and sodium calcines; (3) facility decontamination processes; and (4) process equipment waste. The main tasks completed this fiscal year as part of the program were chromium stabilization study for sodium-bearing waste and stabilization and solidification of LLW from aluminum and zirconium calcines. ... continued below

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20 p.

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Herbst, A.K. September 1, 1996.

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  • Main Title: Idaho Chemical Processing Plant low-level waste grout stabilization development program FY-96 status report
  • Series Title: Fiscal Year 1996

Description

The general purpose of the Grout Stabilization Development Program is to solidify and stabilize the liquid low-level wastes (LLW) generated at the Idaho Chemical Processing Plant (ICPP). It is anticipated that LLW will be produced from the following: (1) chemical separation of the tank farm high-activity sodium-bearing waste; (2) retrieval, dissolution, and chemical separation of the aluminum, zirconium, and sodium calcines; (3) facility decontamination processes; and (4) process equipment waste. The main tasks completed this fiscal year as part of the program were chromium stabilization study for sodium-bearing waste and stabilization and solidification of LLW from aluminum and zirconium calcines. The projected LLW will be highly acidic and contain high amounts of nitrates. Both of these are detrimental to Portland cement chemistry; thus, methods to precondition the LLW and to cure the grout were explored. A thermal calcination process, called denitration, was developed to solidify the waste and destroy the nitrates. A three-way blend of Portland cement, blast furnace slag, and fly ash was successfully tested. Grout cubes were prepared at various waste loadings to maximize loading while meeting compressive strength and leach resistance requirements. For the sodium LLW, a 25% waste loading achieves a volume reduction of 3.5 and a compressive strength of 2,500 pounds per square inch while meeting leach, mix, and flow requirements. It was found that the sulfur in the slag reduces the chromium leach rate below regulatory limits. For the aluminum LLW, a 15% waste loading achieves a volume reduction of 8.5 and a compressive strength of 4,350 pounds per square inch while meeting leach requirements. Likewise for zirconium LLW, a 30% waste loading achieves a volume reduction of 8.3 and a compressive strength of 3,570 pounds per square inch.

Physical Description

20 p.

Notes

INIS; OSTI as DE97050817

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  • Other Information: PBD: Sep 1996

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  • Other: DE97050817
  • Report No.: INEL--96/0370
  • Grant Number: AC07-94ID13223
  • DOI: 10.2172/425283 | External Link
  • Office of Scientific & Technical Information Report Number: 425283
  • Archival Resource Key: ark:/67531/metadc676235

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Creation Date

  • September 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Oct. 20, 2016, 1:23 p.m.

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Citations, Rights, Re-Use

Herbst, A.K. Idaho Chemical Processing Plant low-level waste grout stabilization development program FY-96 status report, report, September 1, 1996; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc676235/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.