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Title: Evaluation of the cover cracking potential due to ground subsidence at UMTRA Project disposal cells

Abstract

The US Department of Energy`s Uranium Mill Tailings Remedial Action (UMTRA) Project requires that mill tailings, containing low-level radioactive uranium mill tailings and other waste, be stabilized and controlled by placement in an encapsulated disposal cell. The cover of the cell is a multi-layer system which includes a low-permeability earthen radon/infiltration barrier, a bedding layer, and a erosion protection layer. The radon/infiltration barrier is designed to limit the radon flux and reduce water infiltration. The performance criteria established by the US Environmental Protection Agency in 40 CFR 192 require the cover to be effective for up to 1000 years to the extent reasonably achievable, and in any case, for at least 200 years. One concern that would affect the integrity of the radon/infiltration barrier is the potential for cracking due to the post-construction settlement of underlying compressible materials. To investigate the potential of cover cracking for UMTRA disposal cells, a simplified beam analysis is used to determine the horizontal movements and strains due to the differential settlements at the top surface of a relatively incompressible layer (e.g. radon/infiltration barrier and compacted tailings). The potential of cover cracking is then evaluated by comparing the calculated horizontal tensile strains with the strainsmore » that will cause cracking of the cover for a given material.« less

Authors:
; ;
Publication Date:
Research Org.:
Morrison-Knudsen Corp., Inc., Boise, ID (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10134903
Report Number(s):
CONF-940225-77
ON: DE94008607; BR: EW2010102/EX2040010
DOE Contract Number:  
AC04-91AL62350
Resource Type:
Conference
Resource Relation:
Conference: Waste management `94: working towards a cleaner environment,Tucson, AZ (United States),27 Feb - 3 Mar 1994; Other Information: PBD: [1994]
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 54 ENVIRONMENTAL SCIENCES; MILL TAILINGS; REMEDIAL ACTION; CONTAINMENT SYSTEMS; FRACTURES; TENSILE PROPERTIES; RADIOACTIVE WASTE STORAGE; UTAH; WATER INFLUX; DIAGRAMS; STATISTICAL MODELS; MATHEMATICAL MODELS; SITE CHARACTERIZATION; GROUND SUBSIDENCE; 052002; 053001; 054000; 540230; 540250; WASTE DISPOSAL AND STORAGE; SITING; HEALTH AND SAFETY; RADIOACTIVE MATERIALS MONITORING AND TRANSPORT; SITE RESOURCE AND USE STUDIES

Citation Formats

Claire, R.F., Kuo, J.C., and Wanket, D.R. Evaluation of the cover cracking potential due to ground subsidence at UMTRA Project disposal cells. United States: N. p., 1994. Web.
Claire, R.F., Kuo, J.C., & Wanket, D.R. Evaluation of the cover cracking potential due to ground subsidence at UMTRA Project disposal cells. United States.
Claire, R.F., Kuo, J.C., and Wanket, D.R. Tue . "Evaluation of the cover cracking potential due to ground subsidence at UMTRA Project disposal cells". United States. https://www.osti.gov/servlets/purl/10134903.
@article{osti_10134903,
title = {Evaluation of the cover cracking potential due to ground subsidence at UMTRA Project disposal cells},
author = {Claire, R.F. and Kuo, J.C. and Wanket, D.R.},
abstractNote = {The US Department of Energy`s Uranium Mill Tailings Remedial Action (UMTRA) Project requires that mill tailings, containing low-level radioactive uranium mill tailings and other waste, be stabilized and controlled by placement in an encapsulated disposal cell. The cover of the cell is a multi-layer system which includes a low-permeability earthen radon/infiltration barrier, a bedding layer, and a erosion protection layer. The radon/infiltration barrier is designed to limit the radon flux and reduce water infiltration. The performance criteria established by the US Environmental Protection Agency in 40 CFR 192 require the cover to be effective for up to 1000 years to the extent reasonably achievable, and in any case, for at least 200 years. One concern that would affect the integrity of the radon/infiltration barrier is the potential for cracking due to the post-construction settlement of underlying compressible materials. To investigate the potential of cover cracking for UMTRA disposal cells, a simplified beam analysis is used to determine the horizontal movements and strains due to the differential settlements at the top surface of a relatively incompressible layer (e.g. radon/infiltration barrier and compacted tailings). The potential of cover cracking is then evaluated by comparing the calculated horizontal tensile strains with the strains that will cause cracking of the cover for a given material.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {3}
}

Conference:
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