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Title: Longevity of Emplacement Drift Ground Support Materials

The purpose of this analysis is to evaluate the factors affecting the longevity of emplacement drift ground support materials and to develop a basis for selection of materials for ground support that will function throughout the preclosure period. The Development Plan (DP) for this analysis is given in CRWMS M&O (Civilian Radioactive Waste Management System Management and Operating Contractor) (1999a). The candidate materials for ground support are steel (carbon steel, ductile cast iron, galvanized steel, and stainless steel, etc.) and cement. Steel will mainly be used for steel sets, lagging, channels, rock bolts, and wire mesh. Cement usage is only considered in the case of grouted rock bolts. The candidate materials for the invert structure are steel and crushed rock ballast. The materials shall be evaluated for the repository emplacement drift environment under a specific thermal loading condition based on the proposed License Application Design Selection (LADS) design. The analysis consists of the following tasks: (1) Identify factors affecting the longevity of ground control materials for use in emplacement drifts. (2) Review existing documents concerning behavior of candidate ground control materials during the preclosure period. The major criteria to be considered for steel are mechanical and thermal properties, and durability,more » of which corrosion is the most important concern. (3) Evaluate the available results and develop recommendations for material(s) to be used.« less
Authors:
Publication Date:
OSTI Identifier:
838661
Report Number(s):
ANL-EBS-GE-000003, REV 0
MOL.20000307.0382, DC 21899; TRN: US0502718
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 7 Jan 2000
Research Org:
Yucca Mountain Project, Las Vegas, Nevada (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CARBON; CAST IRON; CEMENTS; CORROSION; DESIGN; FASTENERS; LICENSE APPLICATIONS; MANAGEMENT; POSITIONING; RADIOACTIVE WASTE MANAGEMENT; RECOMMENDATIONS; STAINLESS STEELS; STEELS; STRATA CONTROL; THERMODYNAMIC PROPERTIES