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Title: The Current State of the Safety Case for WIPP.


Abstract not provided.

Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Environmental Management (EM)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the The 18th Meeting of the Integration Group for the Safety Case (IGSC) held October 11-14, 2016 in Paris, France, France.
Country of Publication:
United States

Citation Formats

Leigh, Christi D. The Current State of the Safety Case for WIPP.. United States: N. p., 2016. Web.
Leigh, Christi D. The Current State of the Safety Case for WIPP.. United States.
Leigh, Christi D. 2016. "The Current State of the Safety Case for WIPP.". United States. doi:.
title = {The Current State of the Safety Case for WIPP.},
author = {Leigh, Christi D.},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month =

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  • No abstract prepared.
  • Abstract not provided.
  • This paper discusses the general procedures for developing scenarios and models, obtaining data, and performing and reviewing integrated assessments. Reliable safety assessment methodologies are presented.
  • Conclusions of this report are: (1) In our scans of q{sub min} and q{sub 95}, the bootstrap current fraction increased with q{sub 95} but did not continue to increase with q{sub min} above about 1.5 as expected by f{sub BS} {approx} q{beta}{sub N}; (2) With existing control tools, q{sub min} {approx} 1.5 appears optimal for maximizing bootstrap current if the calculated ideal wall limit can be reached (only narrowly more so than q{sub min} {approx} 1.1); (3) q{sub min} {approx} 2 discharges achieved lower {beta}{sub N} and calculated n = 1 {beta}{sub N} limits, had increased transport, lower density, lowermore » temperature gradients, and as a result did not produce as much bootstrap current; (4) Highest f{sub BS} achieved at highest q{sub 95} (=6.8), but scan suggests lower q{sub 95} is required for more reactor relevant fusion gain G {approx} {beta}{sub N}H{sub 89}/q{sub 95}{sup 2}; (5) New tools (off-axis NBI, more ECCD) may allow access to higher {beta}{sub N} limits and higher bootstrap fractions.« less
  • The groundwater flow pathway in the Culebra Dolomite aquifer at the Waste Isolation Pilot Plant (WIPP) has been identified a potentially important pathway for radionuclide migration to the accessible environment. Consequently, uncertainties in the models used to describe flow and transport in the Culebra need to be addressed. A Geostatistics Test Problem'' is being developed to evaluate a number of inverse techniques that may be used for Dow calculations in the WIPP performance assessment (PA). The Test Problem is actually a series of test cases, each being developed as a highly complex synthetic data sct; the intent is for themore » ensemble of these data sets span the range of possible conceptual models of groundwater now at the WIPP site. This paper describes the results from Test Case No. 1. Of the five techniques compared, those based on the linearized form of the groundwater flow equation exhibited less bias and less spread in their GWTT distribution functions; the semi-analytical method had the least bias. While the results are not sufficient to make generalizations about which techniques may be better suited for the WIPP PA (only one test case has been exercised), analyses of the data from this test case provides some indication about the relative importance of other aspects of the flow modeling (besides inverse method or geostatistical approach) in PA. Then ancillary analyses examine the effect of gridding an the effect of boundary conditions on the groundwater travel time estimates.« less