Summary of applications of TOUGH2 to the evaluation of multiphase flow processes at the WIPP

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The Waste Isolation Pilot Plant (WIPP) is a US Department of Energy (DOE) research and development facility for the underground disposal of transuranic waste in southeastern New Mexico. The WIPP repository is located 655 m below the land surface in the lower portion of the Salado Formation, which is comprised of beds of pure and impure halite with thin interbeds of anhydrite and related clay seams. The regional dip of the Salado Formation is approximately 1{degree} southeast in the vicinity of the repository. The proposed waste storage area has eight waste disposal panels, each of which will contain seven rooms. ... continued below

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7 p.

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Webb, S.W.; Larson, K.W.; Freeze, G.A. & Christian-Frear, T.L. April 1, 1995.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The Waste Isolation Pilot Plant (WIPP) is a US Department of Energy (DOE) research and development facility for the underground disposal of transuranic waste in southeastern New Mexico. The WIPP repository is located 655 m below the land surface in the lower portion of the Salado Formation, which is comprised of beds of pure and impure halite with thin interbeds of anhydrite and related clay seams. The regional dip of the Salado Formation is approximately 1{degree} southeast in the vicinity of the repository. The proposed waste storage area has eight waste disposal panels, each of which will contain seven rooms. The repository is designed to follow a single stratigraphic horizon. Due to the dip, the north end of the repository will be about 10 meters higher than the south end. Waste that is emplaced in the disposal rooms will generate gas due to microbial degradation, anoxic corrosion, and radiolysis. Brine inflow to the rooms from the surrounding Salado Formation may significantly influence the gas generation rate and the total amount of gas generated. The salt surrounding the repository will creep in response to the excavation, reducing the room volume. Gas generation in the room may increase the pressure sufficiently to drive brine and gas into the surrounding Salado Formation. Migration of gas and brine in the Salado is an important factor in evaluating the performance of the repository. The studies summarized in this paper have. been performed to evaluate brine and gas flow processes in the WIPP disposal system and to identify some of the important processes. These studies are done in support of, but are not part of, the formal Performance Assessment (PA) effort. Because of probabilistic and system-scale requirements, the PA effort uses the Sandia-developed BRAGFLO (BRine And Gas FLOw) code for multiphase flow calculations.

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7 p.

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INIS; OSTI as DE95009593

Source

  • 1995 TOUGH workshop, Berkeley, CA (United States), 20-22 Mar 1995

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  • Other: DE95009593
  • Report No.: SAND--95-0587C
  • Report No.: CONF-9503116--4
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/46596 | External Link
  • Office of Scientific & Technical Information Report Number: 46596
  • Archival Resource Key: ark:/67531/metadc674370

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  • April 1, 1995

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • April 14, 2016, 8:11 p.m.

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Webb, S.W.; Larson, K.W.; Freeze, G.A. & Christian-Frear, T.L. Summary of applications of TOUGH2 to the evaluation of multiphase flow processes at the WIPP, report, April 1, 1995; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc674370/: accessed June 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.