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Title: TBV-361 RESOLUTION ANALYSIS: EMPLACEMENT DRIFT ORIENTATION

Technical Report ·
DOI:https://doi.org/10.2172/861909· OSTI ID:861909

The purpose of this To Be Verified/To Be Determined (TBX) resolution analysis is to release ''To Be Verified'' (TBV)-361 related to the emplacement drift orientation. The system design criterion in ''Subsurface Facility System Description Document'' (CRWMS M&O 1998a, p.9) specifies that the emplacement drift orientation relative to the dominant joint orientations should be at least 30 degrees. The specific objectives for this analysis include the following: (1) Collect and evaluate key block data developed for the repository host horizon rock mass. (2) Assess the dominant joint orientations based on available fracture data. (3) Document the maximum block size as a function of drift orientation. (4) Assess the applicability of the drift orientation/joint orientation offset criterion in the ''Subsurface Facility System Description Document'' (CRWMS M&O 1998a, p.9). (5) Consider the effects of seepage on drift orientation. (6) Verify that the viability assessment (VA) drift orientation complies with the drift orientation/joint orientation offset criterion, or provide justifications and make recommendations for modifying the VA emplacement drift layout. In addition to providing direct support to the System Description Document (SDD), the release of TBV-361 will provide support to the Repository Subsurface Design Department. The results from this activity may also provide data and information needs to support the MGR Requirements Department, the MGR Safety Assurance Department, and the Performance Assessment Organization.

Research Organization:
Office of Scientific and Technical Information (OSTI), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC08-91RW00134
OSTI ID:
861909
Report Number(s):
B00000000-01717-5705-00136 REV 00; MOL.19990802.0316 DC#22229; TRN: US0600621
Country of Publication:
United States
Language:
English