Configuration Generator Model

Technical Report · Thu Nov 18 00:00:00 EST 2004

DOI:https://doi.org/10.2172/862253· OSTI ID:862253

Alsaed, Abdelhalim ^[1]

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1. Yucca Mountain Project, Las Vegas, NV (United States)

''The Disposal Criticality Analysis Methodology Topical Report'' prescribes an approach to the methodology for performing postclosure criticality analyses within the monitored geologic repository at Yucca Mountain, Nevada. An essential component of the methodology is the ''Configuration Generator Model for In-Package Criticality'' that provides a tool to evaluate the probabilities of degraded configurations achieving a critical state. The configuration generator model is a risk-informed, performance-based process for evaluating the criticality potential of degraded configurations in the monitored geologic repository. The method uses event tree methods to define configuration classes derived from criticality scenarios and to identify configuration class characteristics (parameters, ranges, etc.). The probabilities of achieving the various configuration classes are derived in part from probability density functions for degradation parameters. The NRC has issued ''Safety Evaluation Report for Disposal Criticality Analysis Methodology Topical Report, Revision 0''. That report contained 28 open items that required resolution through additional documentation. Of the 28 open items, numbers 5, 6, 9, 10, 18, and 19 were concerned with a previously proposed software approach to the configuration generator methodology and, in particular, the k_eff regression analysis associated with the methodology. However, the use of a k_eff regression analysis is not part of the current configuration generator methodology and, thus, the referenced open items are no longer considered applicable and will not be further addressed.

• Research Organization: Yucca Mountain Project, Las Vegas, NV (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• OSTI ID: 862253
• Report Number(s): CAL-DS0-NU-000002-REV-00B; DOC.20041122.0004 DC#43271; TRN: US0600668
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CONFIGURATION
CRITICALITY
DOCUMENTATION
EVALUATION
PROBABILITY
REGRESSION ANALYSIS
RESOLUTION
SAFETY
TREES
YUCCA MOUNTAIN
Nuclear Criticality Safety Program (NCSP)
Criticality
Probablity
Analysis
Report
Methodology
Even Tree
Yucca Mountain
Criticality Scenarios
Generator Model