The Analytical Repository Source-Term (AREST) model: Description and documentation

Technical Report · Thu Oct 01 00:00:00 EDT 1987

DOI:https://doi.org/10.2172/5903581· OSTI ID:5903581

Liebetrau, A M; Apted, M J; Engel, D W; Altenhofen, M K; Strachan, D M; Reid, C R; Windisch, C F; Erikson, R L; Johnson, K I

The geologic repository system consists of several components, one of which is the engineered barrier system. The engineered barrier system interfaces with natural barriers that constitute the setting of the repository. A model that simulates the releases from the engineered barrier system into the natural barriers of the geosphere, called a source-term model, is an important component of any model for assessing the overall performance of the geologic repository system. The Analytical Repository Source-Term (AREST) model being developed is one such model. This report describes the current state of development of the AREST model and the code in which the model is implemented. The AREST model consists of three component models and five process models that describe the post-emplacement environment of a waste package. All of these components are combined within a probabilistic framework. The component models are a waste package containment (WPC) model that simulates the corrosion and degradation processes which eventually result in waste package containment failure; a waste package release (WPR) model that calculates the rates of radionuclide release from the failed waste package; and an engineered system release (ESR) model that controls the flow of information among all AREST components and process models and combines release output from the WPR model with failure times from the WPC model to produce estimates of total release. 167 refs., 40 figs., 12 tabs.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5903581
• Report Number(s): PNL-6346; ON: DE88002488
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
HIGH-LEVEL RADIOACTIVE WASTES
UNDERGROUND DISPOSAL
MATHEMATICAL MODELS
DESIGN
PLANNING
A CODES
DOCUMENTATION
FORECASTING
SPENT FUELS
COMPUTER CODES
ENERGY SOURCES
FUELS
MANAGEMENT
MATERIALS
NUCLEAR FUELS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
REACTOR MATERIALS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
052002* - Nuclear Fuels- Waste Disposal & Storage
053000 - Nuclear Fuels- Environmental Aspects
054000 - Nuclear Fuels- Health & Safety
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)