Engineered materials characterization report for the Yucca Mountain Site Characterization Project. Volume 3: Corrosion and data modeling

Konynenburg, R.A. Van; McCright, R.D.; Roy, Ananya; Jones, D. A.

doi:10.2172/115554

Cited by 2 publications

(21 citation statements)

References 10 publications

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“…For the extended dry repository configuration, low temperature oxidation of the canister materials is expected in the temperature range 30-340°C and possible metallurgical aging reactions in the range 120-350°C [12]. Eventually the containers will cool enough to allow the possibility of water contact.…”

Section: The Yucca Mowt'ain Environmentmentioning

confidence: 99%

“…Eventually the containers will cool enough to allow the possibility of water contact. It has been suggested with thermo-hydrological modeling that the re-wetting period will occur beyond the regulatory period of 10,000 years [12]. However, this postulation is currently being challenged, and several scenarios are imagined that could lead to premature wetting of container surfaces [3].…”

Section: The Yucca Mowt'ain Environmentmentioning

confidence: 99%

“…The ground water at Yucca Mountain is near neutral in pH and fairly low in ionic content (about 10 ppm chloride, 20 ppm sulfate, 120 ppm bicarbonate, dissolved oxygen, and some nitrate). Potential increases in the concentration of solutes in the repository has been simulated by evaporation of J-13 well water [12]. 95% evaporation of J-13 well water at 90°C increases the pH to 9.5 and the chloride concentration to 750 ppm.…”

Section: The Yucca Mowt'ain Environmentmentioning

confidence: 99%

“…The presence of materials like concrete will affect water pH. The presence of concrete could allow pH levels to get as high as 10 or higher [12]. The pressure will remain at slightly less than one atmosphere, with the boiling point of water at 96°C [ 131.…”

Section: The Yucca Mowt'ain Environmentmentioning

confidence: 99%

“…Pitting could occur on susceptible materials if certain ionic species are present in sufficient concentration in the water; micro-organism can be present near the containers that will change chemical conditions locally such that they axe more aggressive than the natural geochemical environment; and crevice corrosion will be an issue since some crevices will be present in any container design. Information on parameters in Yucca Mountain like temperature, rock 1 stability, water cheNstry, flow rate, water conmt mode, a,nd effects of colloids, microbes, and other introduced mated& will need to be deterpinFd to enable prediction of paterials performance [12]. to mitigate corrosion of .the contaiper.…”

Section: The Yucca Mowt'ain Environmentmentioning

confidence: 99%

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Yucca Mountain project canister material corrosion studies as applied to the electrometallurgical treatment metallic waste form

Keiser¹

1996

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Section: The Yucca Mowt'ain Environmentmentioning

confidence: 99%

Section: The Yucca Mowt'ain Environmentmentioning

confidence: 99%

Section: The Yucca Mowt'ain Environmentmentioning

confidence: 99%

Section: The Yucca Mowt'ain Environmentmentioning

confidence: 99%

Section: The Yucca Mowt'ain Environmentmentioning

confidence: 99%

See 3 more Smart Citations

Yucca Mountain project canister material corrosion studies as applied to the electrometallurgical treatment metallic waste form

Keiser¹

1996

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Site characterization progress report: Yucca Mountain, Nevada. Number 15, April 1--September 30, 1996

1997

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DISTRIBUTION OF THIS DOCUMENT I S URPklMtm Washington, DC 20585 A p r i l 2 3 , 1997 NOTE TO READERS:During this reporting period, we released our revised Program Plan which outlines a focused, integrated program that will achieve key Program and statutory objectives. The plan identifies three near-term objectives: (1) updating in 1997 the regulatory framework for repository site characterization, (2) supporting a 1998 viability assessment, and (3) if the site is suitable, submitting a Secretarial site recommendation to the President in 2001 and a license application to the Nuclear Regulatory Commission in 2002. In support of the first near-term objective, we drafted a Notice of Proposed Rulemaking to amend the repository siting process. This notice was subsequently published in the Federal Register on December 16, 1996, which began a 60-day public comment period. Subsequent notices extended the comment period to May 16, 1997.Tunneling was completed in the Exploratory Studies Facility main drift, and the tunnel boring machine continued tunneling up the south ramp. In December 1996, we encountered worse ground conditions than expected, but even with these poor ground conditions, the tunnel boring machine reached the south portal on April 25,1997. The completion of the main drift marks a shift in emphasis from constructing the Exploratory Studies Facility to conducting scientific experiments in the tunnel and alcoves.The initial construction phase of the Thermal Testing Facility was completed and the first phase of the in situ heater tests began on schedule in August 1996. This eighteen month test will measure thermal effects on the rock and the moisture within the rock.Most of our site investigations and design and performance assessment activities this period were directed toward providing information for the 1998 viability assessment, our second near-term objective. Several studies and modeling activities were completed that provided new information on the potential percolation flux in the repository horizon. The new information indicated the potential for preferential water pathways and for a percolation flux higher than previously indicated.During the next period, we will continue modeling, testing, and data collection activities to reduce the uncertainty in the range of percolation flux that can be expected i? the repository horizon. In the Note to Readers for the 14th Progress Report, we indicated that we expected to issue the revised Waste Containment and Isolation Strategy during the first half of 1997. We will re-evaluate issuance of the strategy as a consequence of any changes to the predicted range c,f percolation flux rates. In addition, we will reassess the results from our on-going repository design and performance activities discussed in this progress report in light of the these same changes. 4-15Design Activity 1.1 1.3. PROGRESS REPORT #15 EXECUTIVE SUMMARYDuring the second half of fiscal year 1996, activities at the Yucca Mountain Site Characterization Proj...

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Engineered materials characterization report for the Yucca Mountain Site Characterization Project. Volume 3: Corrosion and data modeling

Cited by 2 publications

References 10 publications

Yucca Mountain project canister material corrosion studies as applied to the electrometallurgical treatment metallic waste form

Yucca Mountain project canister material corrosion studies as applied to the electrometallurgical treatment metallic waste form

Site characterization progress report: Yucca Mountain, Nevada. Number 15, April 1--September 30, 1996

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