Representation of two-phase flow in the vicinity of the repository in the 1996 performance assessment for the Waste Isolation Pilot Plant

The following topics related to the representation of two-phase (i.e. gas and brine) flow in the vicinity of the repository in the 1996 performance assessment (PA) for the Waste Isolation Pilot Plant (WIPP) are discussed: (i) system of nonlinear partial differential equations used to model two-phase...

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Bibliographic Details
Published in:Reliability engineering & system safety 2000, Vol.69 (1), p.205-226
Main Authors: Vaughn, P., Bean, J.E., Helton, J.C., Lord, M.E., MacKinnon, R.J., Schreiber, J.D.
Format: Article
Language:English
Subjects:
BRAGFLO
Compliance certification application
Performance assessment
Radioactive waste
Repository
Transuranic waste
Two-phase flow
Waste Isolation Pilot Plant
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Summary:The following topics related to the representation of two-phase (i.e. gas and brine) flow in the vicinity of the repository in the 1996 performance assessment (PA) for the Waste Isolation Pilot Plant (WIPP) are discussed: (i) system of nonlinear partial differential equations used to model two-phase flow; (ii) incorporation of repository shafts into model; (iii) creep closure of repository; (iv) interbed fracturing; (v) gas generation; (vi) capillary action in waste; (vii) borehole model; (viii) numerical solution; and (ix) gas and brine flow across specified boundaries. Two-phase flow calculations are a central part of the 1996 WIPP PA and supply results that are subsequently used in the calculation of releases to the surface at the time of a drilling intrusion (i.e. spallings, direct brine releases) and long-term releases due to radionuclide transport by flowing groundwater.
ISSN:0951-8320
1879-0836
DOI:10.1016/S0951-8320(00)00033-8