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Title: Data used in preliminary performance assessment of the Waste Isolation Pilot Plant (1990)

Abstract

This report documents the data available as of August 1990 and used by the Performance Assessment Division of Sandia National Laboratories in its December 1990 preliminary performance assessment of the Waste Isolation Pilot Plant (WIPP). Parameter values are presented in table form for the geologic subsystem, engineered barriers, borehole flow properties, climate variability, and intrusion characteristics. Sources for the data and a brief discussion of each parameter are provided. 101 refs., 72 figs., 21 tabs.

Authors:
 [1];  [2];  [3]
  1. (Sandia National Labs., Albuquerque, NM (USA))
  2. (Geo-Centers, Inc., Albuquerque, NM (USA))
  3. (Science Applications International Corp., Albuquerque, NM (USA))
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (USA)
Sponsoring Org.:
DOE/RW
OSTI Identifier:
6127886
Report Number(s):
SAND-89-2408
ON: DE91006427; TRN: 91-004756
DOE Contract Number:
AC04-76DP00789
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ALPHA-BEARING WASTES; UNDERGROUND DISPOSAL; WIPP; PERFORMANCE TESTING; BOREHOLES; BRINES; CLIMATES; CONTAINMENT SYSTEMS; DATA; FLUID MECHANICS; GEOLOGY; STATISTICS; CAVITIES; CONTAINMENT; ENGINEERED SAFETY SYSTEMS; FUNCTIONAL MODELS; INFORMATION; MANAGEMENT; MATERIALS; MATHEMATICS; MECHANICS; NATIONAL ORGANIZATIONS; NUCLEAR FACILITIES; PILOT PLANTS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTE FACILITIES; RADIOACTIVE WASTES; TESTING; UNDERGROUND FACILITIES; US DOE; US ORGANIZATIONS; WASTE DISPOSAL; WASTE MANAGEMENT; WASTES; 052002* - Nuclear Fuels- Waste Disposal & Storage

Citation Formats

Rechard, R.P, Luzzolino, H., and Sandha, J.S. Data used in preliminary performance assessment of the Waste Isolation Pilot Plant (1990). United States: N. p., 1990. Web. doi:10.2172/6127886.
Rechard, R.P, Luzzolino, H., & Sandha, J.S. Data used in preliminary performance assessment of the Waste Isolation Pilot Plant (1990). United States. doi:10.2172/6127886.
Rechard, R.P, Luzzolino, H., and Sandha, J.S. 1990. "Data used in preliminary performance assessment of the Waste Isolation Pilot Plant (1990)". United States. doi:10.2172/6127886. https://www.osti.gov/servlets/purl/6127886.
@article{osti_6127886,
title = {Data used in preliminary performance assessment of the Waste Isolation Pilot Plant (1990)},
author = {Rechard, R.P and Luzzolino, H. and Sandha, J.S.},
abstractNote = {This report documents the data available as of August 1990 and used by the Performance Assessment Division of Sandia National Laboratories in its December 1990 preliminary performance assessment of the Waste Isolation Pilot Plant (WIPP). Parameter values are presented in table form for the geologic subsystem, engineered barriers, borehole flow properties, climate variability, and intrusion characteristics. Sources for the data and a brief discussion of each parameter are provided. 101 refs., 72 figs., 21 tabs.},
doi = {10.2172/6127886},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1990,
month =
}

Technical Report:

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  • Before disposing of transuranic radioactive waste in the Waste Isolation Pilot Plant (WIPP), the United States Department of Energy (DOE) must evaluate compliance with applicable long-term regulations of the United States Environmental Protection Agency (EPA). Sandia National Laboratories is conducting iterative performance assessments (PAs) of the WIPP for the DOE to provide interim guidance while preparing for a final compliance evaluation. This volume of the 1992 PA contains results of uncertainty and sensitivity analyses with respect to migration of gas and brine from the undisturbed repository. Additional information about the 1992 PA is provided in other volumes. Volume 1 containsmore » an overview of WIPP PA and results of a preliminary comparison with 40 CFR 191, Subpart B. Volume 2 describes the technical basis for the performance assessment, including descriptions of the linked computational models used in the Monte Carlo analyses. Volume 3 contains the reference data base and values for input parameters used in consequence and probability modeling. Volume 4 contains uncertainty and sensitivity analyses with respect to the EPA`s Environmental Standards for the Management and Disposal of Spent Nuclear Fuel, High-Level and Transuranic Radioactive Wastes (40 CFR 191, Subpart B). Finally, guidance derived from the entire 1992 PA is presented in Volume 6. Results of the 1992 uncertainty and sensitivity analyses indicate that, conditional on the modeling assumptions and the assigned parameter-value distributions, the most important parameters for which uncertainty has the potential to affect gas and brine migration from the undisturbed repository are: initial liquid saturation in the waste, anhydrite permeability, biodegradation-reaction stoichiometry, gas-generation rates for both corrosion and biodegradation under inundated conditions, and the permeability of the long-term shaft seal.« less
  • This document provides an overview of the process used to assess the performance of the Waste Isolation Pilot Plant (WIPP), a proposed repository for transuranic wastes that is located in southeastern New Mexico. The quantitative metrics used in the performance-assessment (PA) process are those put forward in the Environmental Protection Agency`s Environmental Standards for the Management and Disposal of Spent Nuclear Fuel, High-Level and Transuranic Radioactive flasks (40 CFR 191). Much has been written about the individual building blocks that comprise the foundation of PA theory and practice, and that WIPP literature is well cited herein. However, the present approachmore » is to provide an accurate, well documented overview of the process, from the perspective of the mechanical steps used to perform the actual PA calculations. Specifically, the preliminary stochastic simulations that comprise the WIPP PAs of 1990, 1991. and 1992 are summarized.« less
  • This document provides an overview of the processes used to access the performance of the Waste Isolation Pilot Plant (WIPP). The quantitative metrics used in the performance-assessment (PA) process are those put forward in the Environmental Protection Agency`s Environmental Standards for the Management and Disposal of Spent Nuclear Fuel, HIgh-LEvel and transuranic radioactive Wastes (40 CFR 191).
  • This paper summarizes the early-1990 status of the performance- assessment work being done to evaluate compliance of the Waste Isolation Pilot Plant with the US Environmental Protection Agency regulation 40 CFR Part 191, Subpart B. This regulation sets environmental standards for radioactive waste disposal. As required by Subpart B, evaluations of compliance will include probabilistic numerical simulations of repository performance and qualitative judgments. Compliance appears uncertain only in the event of human intrusion into the repository after decommissioning. Research is in progress to determine the probability of intrusion and to quantify parameter uncertainties needed to include these factors in simulationsmore » of repository performance. The Department of Energy (DOE) is following two strategies to assure compliance. First, passive marker systems will be designed and implemented to reduce the likelihood of intrusion and increase the likelihood that intruders will properly reseal the repository. Second, modifications to the form of the waste and the design of the repository to achieve acceptable performance if the intruding borehole is not adequately sealed will be designed. Goals include reductions in gas generation and waste permeability and porosity. Numerous modifications are technically possible. The DOE is confident that compliance with Subpart B of 40 CFR 191 can be established using a combination of the two strategies. Hypothetical simulations of repository performance indicate that effective implementation of either strategy alone could keep probabilistic cumulative radionuclide releases at acceptable levels. Successful implementation of both is anticipated. 10 refs., 3 figs.« less
  • The Waste Isolation Pilot Plant (WIPP) Compliance Certification Application (CCA) Performance Assessment (PA) Parameter Database and its ties to supporting information evolved over the course of two years. When the CCA was submitted to the Environmental Protection Agency (EPA) in October 1996, information such as identification of parameter value or distribution source was documented using processes established by Sandia National Laboratories WIPP Quality Assurance Procedures. Reviewers later requested additional supporting documentation, links to supporting information, and/or clarification for many parameters. This guidebook is designed to document a pathway through the complex parameter process and help delineate flow paths to supportingmore » information for all WIPP CCA parameters. In addition, this report is an aid for understanding how model parameters used in the WIPP CCA were developed and qualified. To trace the source information for a particular parameter, a dual-route system was established. The first route uses information from the Parameter Records package as it existed when the CCA calculations were run. The second route leads from the EPA Parameter Database to additional supporting information.« less