Performance assessment calculational exercises; PACE [Performance Assessment Calculational Exercises]-90: Overview and summary
The Performance Assessment Calculational Exercises (PACE) are an ongoing effort coordinated by Yucca Mountain Project Office. The objectives of fiscal year 1990 work, termed PACE-90, as outlined in the Department of Energy Performance Assessment (PA) Implementation Plan were to develop PA capabilities among Yucca Mountain Project (YMP) participants by calculating performance of a Yucca Mountain (YM) repository under ``expected`` and also ``disturbed`` conditions, to identify critical elements and processes necessary to assess the performance of YM, and to perform sensitivity studies on key parameters. It was expected that the PACE problems would aid in development of conceptual models and eventual evaluation of site data. The PACE-90 participants calculated transport of a selected set of radionuclides through a portion of Yucca Mountain for a period of 100,000 years. Results include analyses of fluid-flow profiles, development of a source term for radionuclide release, and simulations of contaminant transport in the fluid-flow field. Later work included development of a problem definition for perturbations to the originally modeled conditions and for some parametric sensitivity studies. 3 refs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 138001
- Report Number(s):
- SAND--90-2088C; CONF-910435--5; ON: DE90017590
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
CALCULATION METHODS
CESIUM 135
CONTAINERS
ENVIRONMENTAL TRANSPORT
FISSION PRODUCTS
FLUID FLOW
HIGH-LEVEL RADIOACTIVE WASTES
HUMAN INTRUSION
IODINE 129
MATHEMATICAL MODELS
NEPTUNIUM 237
ONE-DIMENSIONAL CALCULATIONS
PERFORMANCE TESTING
RADIOACTIVE WASTE FACILITIES
RADIONUCLIDE MIGRATION
SOURCE TERMS
STRATIGRAPHY
TECHNETIUM 99
THERMOMECHANICAL TREATMENTS
TWO-DIMENSIONAL CALCULATIONS
UNDERGROUND DISPOSAL
WATER TABLES
YUCCA MOUNTAIN
Yucca Mountain Project