Uncertainty and sensitivity analysis for two-phase flow in the vicinity of the repository in the 1996 performance assessment for the Waste Isolation Pilot Plant: Disturbed conditions

Journal Article · Mon May 22 00:00:00 EDT 2000 · Reliability Engineering and System Safety (Special Journal Issue)

OSTI ID:755476

HELTON, JON CRAIG; BEAN, J E; ECONOMY, K; GARNER, J W; MACKINNON, ROBERT J; MILLER, JOEL D; SCHREIBER, J D; VAUGHN, PALMER

Uncertainty and sensitivity analysis results obtained in the 1996 performance assessment (PA) for the Waste Isolation Pilot Plant (WIPP) are presented for two-phase flow in the vicinity of the repository under disturbed conditions resulting from drilling intrusions. Techniques based on Latin hypercube sampling, examination of scatterplots, stepwise regression analysis, partial correlation analysis and rank transformations are used to investigate brine inflow, gas generation repository pressure, brine saturation and brine and gas outflow. Of the variables under study, repository pressure and brine flow from the repository to the Culebra Dolomite are potentially the most important in PA for the WIPP. Subsequent to a drilling intrusion repository pressure was dominated by borehole permeability and generally below the level (i.e., 8 MPa) that could potentially produce spallings and direct brine releases. Brine flow from the repository to the Culebra Dolomite tended to be small or nonexistent with its occurrence and size also dominated by borehole permeability.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 755476
• Report Number(s): SAND99-1886J; TRN: US0003609
• Journal Information: Reliability Engineering and System Safety (Special Journal Issue), Other Information: Submitted to Reliability Engineering and System Safety (Special Journal Issue); PBD: 22 May 2000
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
WIPP
PERFORMANCE
SENSITIVITY ANALYSIS
DATA COVARIANCES
TWO-PHASE FLOW
BRINES
GASES
CALCULATION METHODS
PRESSURE DEPENDENCE
WATER INFLUX
PERMEABILITY
WELL DRILLING
BRAGFLO
COMPLIANCE CERTIFICATION APPLICATION
DISTURBED CONDITIONS
EPISTEMIC UNCERTAINTY
LATIN HYPERCUBE SAMPLING
PERFORMANCE ASSESSMENT
RADIOACTIVE WASTE
SUBJECTIVE UNCERTAINTY
TRANSURANIC WASTE
UNCERTAINTY ANALYSIS
WASTE ISOLATION PILOT PLANT