skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The Planned Salt Heater Test at WIPP: Brine Availability.

Abstract

Abstract not provided.

Authors:
; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5)
OSTI Identifier:
1431700
Report Number(s):
SAND2017-4509PE
652866
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the SNL Geoscience Research Symposium held May 4, 2017 in Albuquerque, NM.
Country of Publication:
United States
Language:
English

Citation Formats

Kuhlman, Kristopher L, Mills, Melissa Marie, and Matteo, Edward N. The Planned Salt Heater Test at WIPP: Brine Availability.. United States: N. p., 2017. Web.
Kuhlman, Kristopher L, Mills, Melissa Marie, & Matteo, Edward N. The Planned Salt Heater Test at WIPP: Brine Availability.. United States.
Kuhlman, Kristopher L, Mills, Melissa Marie, and Matteo, Edward N. Sat . "The Planned Salt Heater Test at WIPP: Brine Availability.". United States. doi:. https://www.osti.gov/servlets/purl/1431700.
@article{osti_1431700,
title = {The Planned Salt Heater Test at WIPP: Brine Availability.},
author = {Kuhlman, Kristopher L and Mills, Melissa Marie and Matteo, Edward N},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • The Brine Sampling and Evaluation Program (BSEP) is a formalized continuation of studies that began in 1982 as part of the Site Validation Program. The program was established in 1985. The mission was to document and investigate the origins, hydraulic characteristics, extent, and composition of brine occurrences in the Permian Salado Formation and the seepage of that brine into the WIPP excavations. This document focuses on the cumulative data obtained from the BSEP. The overall activities of the BSEP described and quantified the brine. It includes documentation and study of brine inflow into boreholes in the facility. The BSEP investigatedmore » the occurrence and development of brine weeps, crusts, and brine geochemistry. The presence of salt-tolerant bacteria in the workings was recorded and their possible interactions with experiments and operations, was assessed. The formation properties associated with the occurrence of brine was characterized. The determination of formation properties included the water content of various geologic units, direct examination of these units in boreholes using a video camera system, and measurement of electrical properties relatable to the brine contents. Modeling examined the interaction of salt deformation near the workings and the flow of brine through the deforming rocks. 34 refs.« less
  • Simulated DHLW (Defense High Level Waste) package performance tests were carried out at the WIPP (Waste Isolation Pilot Plant) by emplacing a number of waste canisters containing electrical heaters into the floor of the mine. Peak temperatures were about 130{degrees}C, and the tests ran for three years. During this time, an unanticipated large amount of water was collected from heater hole BO42. A study was, therefore, undertaken to determine if this fluid was derived from normal weep brines. This was accomplished by comparing the amount of salt deposited by the dried weep brines with the volume of condensed steam collectedmore » during the test. Documenting the post-test condition of the various backfills was the other objective of this report. In spite of being exposed to acidic vapors, the bentonite-sand backfill retained its mineralogic integrity. However, the bentonite-sand backfill compacted between the canister and the wall only achieved a density that was about three quarters that of a pore-free material. The bentonite backfill also showed evidence of hair-line cracks through which steam had left the vicinity of the canister. In contrast, compacted crushed salt backfill exhibited no evidence of through-going cracks and was compacted to better than 99% of that of pure nonporous sodium chloride. Thus, the seal provided by a crushed salt backfill appears to be superior to that provided by bentonite. 13 refs., 6 tabs.« less
  • WIPP salt specimens were tested under creep conditions using a constant stress difference of 15 MPa, a temperature of 20{degree}C, and confining pressures between 0.5 MPa and 15 MPa. After 8 days of testing, saturated brine was introduced around each specimen so that the strain-rate response to the change in moisture content could be measured. Brine always caused immediate changes in axial, radial, and volumetric strain rates. Strain rates returned to their pre-brine-introduction values only for tests conducted with confining pressures greater than 3.5 MPa. These data indicate that permanent moisture effects do no occur when the confining pressure ismore » sufficient to suppress specimen dilation (microfracturing). 3 refs., 10 figs., 1 tab.« less
  • Brine flow has been measured to unheated boreholes for periods of a few days and to heated holes for two years in the WIPP facility. It is suggested that Darcy flow may dominate the observed influx of brine. Exact solutions to a linearized model for one-dimensional, radial flow are evaluated for conditions approximating the field experiments. Flow rates of the correct order of magnitude are calculated for permeabilities in the range 10/sup -21/ to 10/sup -20/ m/sup 2/ (1 to 10 nanodarcy) for both the unheated and heated cases. 20 refs., 3 figs., 1 tab.
  • WIPP salt specimens were tested under creep conditions using a constant stress difference of 15 MPa, a temperature of 20{degree}C, and confining pressures between 0.5 MPa and 15 MPa. After 8 days of testing, saturated brine was introduced around each specimen so that the strain-rate response to the change in moisture content could be measured. Brine always caused immediate changes in axial, radial, and volumetric strain rates. Strain rates returned to their pre-brine-introduction values only for tests conducted with confining pressures greater than 3.5 MPa. These data indicate that permanent moisture effects do not occur when the confining pressure ismore » sufficient to suppress specimen dilation (microfracturing). 3 refs., 10 figs., 1 tab.« less