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Three-dimensional thermal analysis for a conceptual high-level waste repository in welded tuff

Technical Report ·
OSTI ID:59459

A near-field, three-dimensional, thermal-conduction analysis was done for 2.16-kW high-level waste canisters emplaced in welded tuff. Initial thermal loadings of 75 and 100 kW/acre were investigated. The conductivities used were 2.4 W/m.{sup 0}C for the saturated tuff and 1.55 W/m.{sup 0}C for the dry tuff. The tuff was modeled as always saturated and with boiling of the interstitial water. Calculations were done with the ADINAT finite-element code and associated pre- and post processor codes. For the 100-kW/acre initial loading, boiling of the interstitial water, and an initial temperature of 35{sup 0}C, the maximum canister temperature was 296{sup 0}C.

Research Organization:
Sandia National Labs., Albuquerque, NM (United States)
DOE Contract Number:
AC04-76DP00789
OSTI ID:
59459
Report Number(s):
SAND--81-0215; ON: DE82015503
Country of Publication:
United States
Language:
English