Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Survey of Degradation Modes of Candidate Materials for High-level Radioactive Waste Disposal Containers :Final Report
Survey of the Degradation Modes of Candidate Materials for High-level Radioactive Waste Disposal Containers. Final Report
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 59
Book Description
One of the most significant factors impacting the performance of waste package container materials under repository relevant conditions is the thermal environment. This environment will be affected by the areal power density of the repository, which is dictated by facility design, and the dominant heat transfer mechanism at the site. The near-field environment will evolve as radioactive decay decreases the thermal output of each waste package. Recent calculations (Buscheck and Nitao, 1994) have addressed the importance of thermal loading conditions on waste package performance at the Yucca Mountain site. If a relatively low repository thermal loading design is employed, the temperature and relative humidity near the waste package may significantly affect the degradation of corrosion allowance barriers due to moist air oxidation and radiolytically enhanced corrosion. The purpose this report is to present a literature review of the potential degradation modes for moderately corrosion resistant nickel copper and nickel based candidate materials that may be applicable as alternate barriers for the ACD systems in the Yucca Mountain environment. This report presents a review of the corrosion of nickel-copper alloys, summaries of experimental evaluations of oxidation and atmospheric corrosion in nickel-copper alloys, views of experimental studies of aqueous corrosion in nickel copper alloys, a brief review of galvanic corrosion effects and a summary of stress corrosion cracking in these alloys.
Survey of the Degradation Modes of Candidate Materials for High-level Radioactive Waste Disposal Containers
Author: Survey of Degradation Modes of Candidate Materials for High-level Radioactive-waste Disposal Containers
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 71
Book Description
Three iron- to nickel-based austenitic alloys (Types 304L and 316L stainless steels and Alloy 825) are being considered as candidate materials for the fabrication of high-level radioactive-waste containers. Waste will include fuel assemblies from reactors as well as high-level waste in borosilicate glass forms, and will be sent to the prospective repository at Yucca Mountain, Nevada. The decay of radionuclides in the repository will result in the generation of substantial heat and in fluences of gamma radiation. Container materials may undergo any of several modes of degradation in this environment, including atmospheric oxidation; uniform aqueous phase corrosion; pitting; crevice corrosion; sensitization and intergranular stress corrosion cracking (IGSCC); and transgranular stress corrosion cracking (TGSCC). This report is an analysis of data relevant to the pitting, crevice corrosion, and stress corrosion cracking (SCC) of the three austenitic candidate alloys. The candidates are compared in terms of their susceptibilities to these forms of corrosion. Although all three candidates have demonstrated pitting and crevice corrosion in chloride-containing environments, Alloy 825 has the greatest resistance to these types of localized corrosion (LC); such resistance is important because pits can penetrate the metal and serve as crack initiation sites. Both Types 304L and 316L stainless steels are susceptible to SCC in acidic chloride media. In contrast, SCC has not been documented in Alloy 825 under comparable conditions. Gamma radiation has been found to enhance SCC in Types 304 and 304L stainless steels, but it has no detectable effect on the resistance of Alloy 825 to SCC. Furthermore, while the effects of microbiologically induced corrosion have been observed for 300-series stainless steels, nickel-based alloys such as Alloy 825 seem to be immune to such problems. 211 refs., 49 figs., 10 tabs.
Degradation Mode Survey Galvanic Corrosion of Candidate Metallic Materials for High-level Radioactive Waste Disposal Containers
Author: Ajit K. RoyPublisher:
ISBN:
Category : Corrosion resistant alloys
Languages : en
Pages : 46
Book Description
This report presents the results of a literature review on galvanic corrosion between candidate metals and alloys currently being considered for the waste package containers.
Degradation Mode Survey Galvanic Corrosion of Candidate Metallic Materials for High-level Radioactive Waste Disposal Containers
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 21
Book Description
This report presents the results of a literature review on galvanic corrosion between candidate metals and alloys currently being considered for the waste package containers.
Energy Research Abstracts
Author: Site Characterization Progress Report
Author: Publisher:
ISBN:
Category : Radioactive waste disposal in the ground
Languages : en
Pages : 662
Book Description
Yucca Mountain Site Characterization Project Bibliography, 1994-1995
Author: Application of Accelerated Corrosion Tests to Service Life Prediction of Materials
Author: Gustavo CragnolinoPublisher: ASTM International
ISBN: 0803118538
Category : Accelerated life testing
Languages : en
Pages : 404
Book Description
A comparison of how different industries are addressing the development and selection of materials to use for such purposes as nuclear and other hazardous waste disposal and transport, structures designed to last a long time, and systems subject to economic pressures that keep them from frequent mai