WASTE TREATMENT & IMMOBILIZATION PLANT (WTP) HIGH LEVEL WASTE (HLW) CANISTER PRODUCTION ESTIMATES TO SUPPORT ANALYSES BY THE YUCCA MOUNTAIN PROJECT

2004 ◽  
Author(s):  
W F HAMEL
Keyword(s):  
Waste Treatment ◽  
Yucca Mountain ◽  
High Level Waste ◽  
High Level

scholarly journals Development of Integrated Mechanistically-Based Degradation-Mode Models for Performance Assessment of High-Level Waste Containers

1999 ◽  
Vol 556 ◽  
Author(s):  
J. C. Farmer ◽  
R. D. Mccright ◽  
J. C. Estill ◽  
S. R. Gordon
Keyword(s):  
Stainless Steel ◽  
Crevice Corrosion ◽  
Chloride Concentration ◽  
Yucca Mountain ◽  
304 Stainless Steel ◽  
High Level Waste ◽  
Mechanistic Models ◽  
Alloy 22 ◽  
High Level ◽  
Impurity Elements

AbstractAlloy 22 [UNS N06022] is now being considered for construction of high level waste containers to be emplaced at Yucca Mountain and elsewhere. In essence, this alloy is 20.0–22.5% Cr, 12.5–14.5% Mo, 2.0–6.0% Fe, 2.5–3.5% W, with the balance being Ni. Other impurity elements include P, Si, S, Mn, Co and V. Cobalt may be present at a maximum concentration of 2.5%. Detailed mechanistic models have been developed to account for the corrosion of Alloy 22 surfaces in crevices that will inevitably form. Such occluded areas experience substantial decreases in pH, with corresponding elevations in chloride concentration. Experimental work has been undertaken to validate the crevice corrosion model, including parallel studies with 304 stainless steel.

Effects of Perched Water on Thermally Driven Moisture Flow at the Proposed Yucca Mountain Repository for High-Level Waste

1999 ◽  
Vol 125 (2) ◽  
pp. 235-253 ◽  
Author(s):  
Goodluck I. Ofoegbu ◽  
Amvrossios C. Bagtzoglou ◽  
Ronald T. Green ◽  
Michael A. Muller
Keyword(s):  
Yucca Mountain ◽  
High Level Waste ◽  
Moisture Flow ◽  
Perched Water ◽  
Thermally Driven ◽  
High Level

Separation of Precipitate-forming Elements during High Level Waste Treatment Using Acidic Zirconium Salt of Dibutyl Phosphoric Acid

2007 ◽  
Vol 44 (3) ◽  
pp. 423-430 ◽  
Author(s):  
Boris Ya. ZILBERMAN ◽  
Yury S. FEDOROV ◽  
Olga V. SHMIDT ◽  
Nikolay D. GOLETSKY ◽  
Irina V. BLAZHEVA ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Waste Treatment ◽  
High Level Waste ◽  
High Level

Evolution of Chemistry and Its Effects on the Corrosion of Engineered Barrier Materials

2006 ◽  
Vol 985 ◽  
Author(s):  
Darrell Dunn ◽  
Yi-Ming Pan ◽  
Xihua He ◽  
Lietai Yang ◽  
Roberto Pabalan
Keyword(s):  
Environmental Conditions ◽  
Environmental Influence ◽  
Near Field ◽  
Yucca Mountain ◽  
High Level Waste ◽  
Seepage Water ◽  
Waste Package ◽  
Barrier Materials ◽  
Engineered Barrier ◽  
High Level

ABSTRACTThe evolution of environmental conditions within the emplacement drifts of a potential high-level waste repository at Yucca Mountain, Nevada, may be influenced by several factors, including the temperature and relative humidity within the emplacement drifts and the composition of seepage water. The performance of the waste package and the drip shield may be affected by the evolution of the environmental conditions within the emplacement drifts. In this study, tests evaluated the evolution of environmental conditions on the waste package surfaces and in the surrounding host rock. The tests were designed to (i) simulate the conditions expected within the emplacement drifts; (ii) measure the changes in near-field chemistry; and (iii) determine environmental influence on the performance of the engineered barrier materials. Results of tests conducted in this study indicate the composition of salt deposits was consistent with the initial dilute water chemistry. Salts and possibly concentrated calcium chloride brines may be more aggressive than either neutral or alkaline brines.

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