DEFENSE HIGH LEVEL WASTE GLASS DEGRADATION Page: 2 of 55
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OFFICE OF CIVILIAN RADIOACTIVE WASTE
ANALYSISIMODEL REVISION RECORD
Complete Only Applicable Items 1. Page: 2 of: 55
2. Analysis or Model Title:
Defense High Level Waste Glass Degradation
3. Document Identifier (including Rev. No. and Change No., if applicable):
ANL-EBS-MD-000016 REV 00 ICN 02
4. Revision/Change No. 5. Description of Revision/Change
REV 00 ICN 02
Provide a graphical comparison in section 6.4 of degradation rates calculated from the derived model
with experimental values to show that the model is conservative. Replace Table 6 with a graphical
representation of degradation rate of glass as a function of temperature and pH calculated from the
recommended correlations. Discuss the validity of the Knauss et al 1990 data for model development in
section 4. Make some needed editorial corrections and change the specific surface area units in Table
6 column 6 from m2/g to m2/kg. Address NRC comments regarding use of boron for degradation in
acidic solutions instead of silicon and selection of log keff = 9 instead of 10 for acidic solutions
Change the use of the two DTNs involving the glass degradation data, obtained from the Knauss et al
(1990) reference, from Input Data and Parameters (Section 4.1) to Assumptions (Section 5, Assumption
5.).and change its classification in the DIRS to Corroborating Information. Justify the Assumption
through reference to similar pH and temperature dependencies for the dissolution rates of a wide range
of glass compositions found in the literature. Remove TBVs (TBV-4287 and TBV-5006) in the ICN 01
DIRS for these DTNs. Justify through analysis of available literature information the assumption that
glass dissolution in humid air or dripping water is a special case of aqueous dissolution and remove this
assumption and its associated TBV-4284 from the DIRS report. Add sentence to Purpose section
addressing the importance of the model for its intended use in terms of the AP-3.15Q screening criteria
and repository safety strategy. Add discussion in Section 7 addressing the confidence in the model for
its intended use and how the document addresses the Issue Resolution Status Report (IRSR)
Container Life and Source Term (CLST) issues. Changes are identified by change bars in the right
hand margin. Since one of the purposes of this ICN is to remove data-affiliated TBVs attachedd to ICN
01 of the AMR, the planning document for the scope, approach and methodology regarding the data
qualification work, including the modification of AMRs to reflect the data qualification status, is TWP-
MGR-MD-000004, REV 02, Technical Work Plan for Integrated Management of Technical Product Input
Department (BSC 2001).
AP-3. IOQ.4 Rev. 06/30/1999
AP-3. l Q.4
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Ebert, W. DEFENSE HIGH LEVEL WASTE GLASS DEGRADATION, report, September 20, 2001; Oak Ridge, Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc781521/m1/2/: accessed March 18, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.