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Title: SEEPAGE/BACKFILL INTERACTIONS

Abstract

As directed by written development plan (CRWMS M&O 1999a), a sub-model of seepage/backfill interactions is developed and presented in this document to support the Engineered Barrier System (EBS) Physical and Chemical Environment Model. The purpose of this analysis is to assist Performance Assessment Operations (PAO) and the Engineered Barrier Performance Department in modeling the geochemical environment within a repository drift. In this analysis, a conceptual model is developed to provide PAO a more detailed and complete in-drift geochemical model abstraction and to answer the key technical issues (KTI) raised in the NRC Issue Resolution Status Report (IRSR) for the Evolution of the Near Field Environment (NFE) Revision 2 (NRC 1999). The development plan calls for a sub-model that evaluates the effect on water chemistry of chemical reactions between water that enters the drift and backfill materials in the drift. The development plan specifically requests an evaluation of the following important chemical reaction processes: dissolution-precipitation, aqueous complexation, and oxidation-reduction. The development plan also requests the evaluation of the effects of varying seepage and drainage fluxes, varying temperature, and varying evaporation and condensation fluxes. Many of these effects are evaluated in a separate Analysis/Model Report (AMR), ''Precipitates Salts Analysis AMR'' (CRWMS M&Omore » 2000), so the results of that AMR are referenced throughout this AMR.« less

Authors:
Publication Date:
Research Org.:
Office of Scientific and Technical Information (OSTI), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
861905
Report Number(s):
ANL-EBS-MD-000039 REV 00
MOL.20000506.0243 DC#22530; TRN: US0600619
DOE Contract Number:  
NA
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; RADIOACTIVE WASTE FACILITIES; WATER INFLUX; EVAPORATION; PERFORMANCE; COMPUTERIZED SIMULATION; GROUND WATER; GEOCHEMISTRY; BACKFILLING; ROCK-FLUID INTERACTIONS

Citation Formats

Mariner, P. SEEPAGE/BACKFILL INTERACTIONS. United States: N. p., 2000. Web. doi:10.2172/861905.
Mariner, P. SEEPAGE/BACKFILL INTERACTIONS. United States. https://doi.org/10.2172/861905
Mariner, P. 2000. "SEEPAGE/BACKFILL INTERACTIONS". United States. https://doi.org/10.2172/861905. https://www.osti.gov/servlets/purl/861905.
@article{osti_861905,
title = {SEEPAGE/BACKFILL INTERACTIONS},
author = {Mariner, P},
abstractNote = {As directed by written development plan (CRWMS M&O 1999a), a sub-model of seepage/backfill interactions is developed and presented in this document to support the Engineered Barrier System (EBS) Physical and Chemical Environment Model. The purpose of this analysis is to assist Performance Assessment Operations (PAO) and the Engineered Barrier Performance Department in modeling the geochemical environment within a repository drift. In this analysis, a conceptual model is developed to provide PAO a more detailed and complete in-drift geochemical model abstraction and to answer the key technical issues (KTI) raised in the NRC Issue Resolution Status Report (IRSR) for the Evolution of the Near Field Environment (NFE) Revision 2 (NRC 1999). The development plan calls for a sub-model that evaluates the effect on water chemistry of chemical reactions between water that enters the drift and backfill materials in the drift. The development plan specifically requests an evaluation of the following important chemical reaction processes: dissolution-precipitation, aqueous complexation, and oxidation-reduction. The development plan also requests the evaluation of the effects of varying seepage and drainage fluxes, varying temperature, and varying evaporation and condensation fluxes. Many of these effects are evaluated in a separate Analysis/Model Report (AMR), ''Precipitates Salts Analysis AMR'' (CRWMS M&O 2000), so the results of that AMR are referenced throughout this AMR.},
doi = {10.2172/861905},
url = {https://www.osti.gov/biblio/861905}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Apr 14 00:00:00 EDT 2000},
month = {Fri Apr 14 00:00:00 EDT 2000}
}