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Title: Salt rock mechanics - prediction vs. performance - WIPP Provides Answers

Abstract

In the years leading up to the Compliance Certification Application in 1996, scientists working on the Waste Isolation Pilot Plant (WIPP) conducted an extensive suite of laboratory and field experiments. Additionally, full-scale experiments in the underground established performance standards and expectations, while the fundamental science of salt deformation was explored in the laboratory. Field experiments included several at elevated temperature to ascertain salt response under conditions anticipated for the operating repository, which at the outset included heat-generating defense waste. Simulations and predictions of the field tests were made using finite element computer models that incorporated sophisticated models for salt deformation. Parameters for the salt model were derived from laboratory experiments on natural salt extracted from the repository horizon. All of these science investigations provided confidence in the predicted behavior of the salt at WIPP. Lastly, on this tenth anniversary of WIPP operations, this paper recounts some of the geomechanics investigations conducted during site characterization, highlights three key geomechanics issues experienced over the decade of operations, and concludes that our basic understanding of salt mechanics portends a promising future for radioactive waste disposal in salt.

Authors:
 [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1426935
Report Number(s):
SAND-2009-0866J
Journal ID: ISSN 9999-0014; 507196
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article
Journal Name:
Sandia journal manuscript; Not yet accepted for publication
Additional Journal Information:
Journal Name: Sandia journal manuscript; Not yet accepted for publication; Journal ID: ISSN 9999-0014
Publisher:
Sandia
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES

Citation Formats

Hansen, Francis D. Salt rock mechanics - prediction vs. performance - WIPP Provides Answers. United States: N. p., 2009. Web.
Hansen, Francis D. Salt rock mechanics - prediction vs. performance - WIPP Provides Answers. United States.
Hansen, Francis D. Sun . "Salt rock mechanics - prediction vs. performance - WIPP Provides Answers". United States. https://www.osti.gov/servlets/purl/1426935.
@article{osti_1426935,
title = {Salt rock mechanics - prediction vs. performance - WIPP Provides Answers},
author = {Hansen, Francis D.},
abstractNote = {In the years leading up to the Compliance Certification Application in 1996, scientists working on the Waste Isolation Pilot Plant (WIPP) conducted an extensive suite of laboratory and field experiments. Additionally, full-scale experiments in the underground established performance standards and expectations, while the fundamental science of salt deformation was explored in the laboratory. Field experiments included several at elevated temperature to ascertain salt response under conditions anticipated for the operating repository, which at the outset included heat-generating defense waste. Simulations and predictions of the field tests were made using finite element computer models that incorporated sophisticated models for salt deformation. Parameters for the salt model were derived from laboratory experiments on natural salt extracted from the repository horizon. All of these science investigations provided confidence in the predicted behavior of the salt at WIPP. Lastly, on this tenth anniversary of WIPP operations, this paper recounts some of the geomechanics investigations conducted during site characterization, highlights three key geomechanics issues experienced over the decade of operations, and concludes that our basic understanding of salt mechanics portends a promising future for radioactive waste disposal in salt.},
doi = {},
journal = {Sandia journal manuscript; Not yet accepted for publication},
issn = {9999-0014},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {2}
}