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995 Matching Results
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2-Page Summary for Neptunium solubility in the Near-field Environment of A Proposed Yucca Mountain Repository
The total system performance assessment (TSPA) for the proposed repository at Yucca Mountain, NV, includes a wide variety of processes to evaluate the potential release of radionuclides from the Engineered Barrier System into the unsaturated zone of the geosphere. The principal processes controlling radionuclide release and mobilization from the waste forms are captured in the model to assess the dissolved concentrations of radionuclides in the source-term. The TSPA model of the source-term incorporates the far-from-equilibrium dissolution of, for example, spent nuclear fuel (SNF) to capture bounding rates of radionuclide availability as the SNF degrades. In addition, for individual radionuclides, the source-term model evaluates solubility constraints that are more indicative of longer-term, equilibrium processes that can limit the potential mass transport from the source term in those cases. These solubility limits represent phase saturation and precipitation processes that can occur either at the waste form as it alters, or at other locations in the near-field environment (e.g., within the invert) if chemical conditions are different. Identification and selection of applicable constraints for solubility-limited radionuclide concentrations is a primary focus in formulating the source-term model for the TSPA. Neptunium is a long-lived radionuclide that becomes a larger fraction of the potential dose …
Date:
March 29, 2005
Creator:
Sassani, D.; van Luik, A. & Summerson, J.
Object Type:
Report
System:
The UNT Digital Library
21-PWR Waste Package Side and End Impacts
The objective of this calculation is to determine the structural response of a 21-Pressurized Water Reactor (PWR) spent nuclear fuel waste package impacting an unyielding surface. A range of initial velocities and initial angles between the waste package and the unyielding surface is studied. The scope of this calculation is limited to estimating the area of the outer shell (OS) where the residual stress exceeds a given limit (hereafter ''damaged area''). The stress limit is defined as a fraction of the yield strength of the OS material, Alloy 22 (SB-575 N06022), at the appropriate temperature. The design of the 21-PWR waste package used in this calculation is that defined in Reference 8. However, a value of 4 mm was used for the gap between the inner shell and the OS, and the thickness of the OS was reduced by 2 mm. The sketch in Attachment I provides additional information not included in Reference 8. All obtained results are valid for this design only. This calculation is associated with the waste package design and was performed by the Specialty Analyses and Waste Package Design Section. The waste package (i.e. uncanistered spent nuclear fuel disposal container) is classified as Quality Level 1.
Date:
August 29, 2005
Creator:
Schmitt, T.
Object Type:
Report
System:
The UNT Digital Library
50 Individual Letters from concerned citizens regarding the closing of the Cannon AFB
Community Correspondence - 50 Individual Letters from concerned citizens regarding the closing of the Cannon AFB
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
61 Individual Letters from concerned citizens regarding the closing of the Pittsburgh 911th Airlift Wing
Community Correspondence - 61 Individual Letters from concerned citizens regarding the closing of the Pittsburgh 911th Airlift Wing
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
115 Individual Letters from concerned citizens regarding the closing of the Portsmouth Naval Shipyard
Community Correspondence - 115 Individual Letters from concerned citizens regarding the closing of the Portsmouth Naval Shipyard
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
158 Individual Letters from concerned citizens regarding the closing of the Pittsburg 911th Airlift Wing
Community Correspondence - 158 Individual Letters from concerned citizens regarding the closing of the Pittsburg 911th Airlift Wing
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
178 Individual Letters from concerned citizens regarding the closing of the Portsmouth Naval Shipyard
Community Correspondence - 178 Individual Letters from concerned citizens regarding the closing of the Portsmouth Naval Shipyard
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
200 Individual Letters from concerned citizens regarding the closing of the Portsmouth Naval Shipyard
Community Correspondence - 200 Individual Letters from concerned citizens regarding the closing of the Portsmouth Naval Shipyard
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
320 Individual Letters from concerned citizens regarding the closing of the Portsmouth Naval Shipyard
Community Correspondence - 320 Individual Letters from concerned citizens regarding the closing of the Portsmouth Naval Shipyard
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
350 Individual Letters from concerned citizens regarding the closing of the Cannon AFB
Community Correspondence - 350 Individual Letters from concerned citizens regarding the closing of the Cannon AFB
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
472 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 472 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
477 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 477 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
489 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 489 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
493 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 493 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York
Community Correspondence – 500 form letters from concerned community members surrounding Niagara Falls Air Force Base in Niagara Falls, New York. The first four pages are text searchable examples of the letters that are contained in the document.
Date:
June 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library