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VISION -- A Dynamic Model of the Nuclear Fuel Cycle
The Advanced Fuel Cycle Initiative’s (AFCI) fundamental objective is to provide technology options that – if implemented – would enable long-term growth of nuclear power while improving sustainability and energy security. The AFCI organization structure consists of four areas; Systems Analysis, Fuels, Separations and Transmutations. The Systems Analysis Working Group is tasked with bridging the program technical areas and providing the models, tools, and analyses required to assess the feasibility of design and deploy¬ment options and inform key decision makers. An integral part of the Systems Analysis tool set is the development of a system level model that can be used to examine the implications of the different mixes of reactors, implications of fuel reprocessing, impact of deployment technologies, as well as potential “exit” or “off ramp” approaches to phase out technologies, waste management issues and long-term repository needs. The Verifiable Fuel Cycle Simulation Model (VISION) is a computer-based simulation model that allows performing dynamic simulations of fuel cycles to quantify infrastructure requirements and identify key trade-offs between alternatives. VISION is intended to serve as a broad systems analysis and study tool applicable to work conducted as part of the AFCI (including costs estimates) and Generation IV reactor development studies.
Date:
February 1, 2006
Creator:
Jacobson, J. J.; Yacout, A. M.; Piet, S. J.; Shropshire, D. E. & Matthern, G. E.
Object Type:
Article
System:
The UNT Digital Library
VISION - Verifiable Fuel Cycle Simulation of Nuclear Fuel Cycle Dynamics
The U.S. DOE Advanced Fuel Cycle Initiative’s (AFCI) fundamental objective is to provide technology options that - if implemented - would enable long-term growth of nuclear power while improving sustainability and energy security. The AFCI organization structure consists of four areas; Systems Analysis, Fuels, Separations and Transmutations. The Systems Analysis Working Group is tasked with bridging the program technical areas and providing the models, tools, and analyses required to assess the feasibility of design and deployment options and inform key decision makers. An integral part of the Systems Analysis tool set is the development of a system level model that can be used to examine the implications of the different mixes of reactors, implications of fuel reprocessing, impact of deployment technologies, as well as potential "exit" or "off ramp" approaches to phase out technologies, waste management issues and long-term repository needs. The Verifiable Fuel Cycle Simulation Model (VISION) is a computer-based simulation model that allows performing dynamic simulations of fuel cycles to quantify infrastructure requirements and identify key trade-offs between alternatives. It is based on the current AFCI system analysis tool "DYMOND-US" functionalities in addition to economics, isotopic decay, and other new functionalities. VISION is intended to serve as a …
Date:
February 1, 2006
Creator:
Piet, Steven J.; Yacout, A. M.; Jacobson, J. J.; Laws, C.; Matthern, G. E. & Shropshire, D. E.
Object Type:
Article
System:
The UNT Digital Library
Wanaket Wildlife Area 2005 HEP Report
The Regional HEP Team (RHT) and Confederated Tribes of the Umatilla Indian Reservation (CTUIR) Wildlife Program staff conducted a follow-up habitat evaluation procedures (HEP) analysis on the Wanaket Wildlife Management Area in June 2005. The 2005 HEP investigation generated 3,084.48 habitat units (HUs) for a net increase of 752.18 HUs above 1990/1995 baseline survey results. The HU to acre ratio also increased from 0.84:1.0 to 1.16:1.0. The largest increase in habitat units occurred in the shrubsteppe/grassland cover type (California quail and western meadowlark models), which increased from 1,544 HUs to 2,777 HUs (+43%), while agriculture cover type HUs were eliminated because agricultural lands (managed pasture) were converted to shrubsteppe/grassland. In addition to the agriculture cover type, major changes in habitat structure occurred in the shrubsteppe/grassland cover type due to the 2001 wildfire which removed the shrub component from well over 95% of its former range. The number of acres of all other cover types remained relatively stable; however, habitat quality improved in the riparian herb and riparian shrub cover types. The number and type of HEP species models used during the 2005 HEP analysis were identical to those used in the 1990/1995 baseline HEP surveys. The number of species models …
Date:
February 2006
Creator:
Ashley, Paul R.
Object Type:
Report
System:
The UNT Digital Library
Washington Phase II Fish Diversion Screen Evaluations in the Yakima and Touchet River Basins, 2005-2006 Annual Reports.
In 2005, Pacific Northwest National Laboratory (PNNL) researchers evaluated 25 Phase II fish screen sites in the Yakima and Touchet river basins. Pacific Northwest National Laboratory performs these evaluations for Bonneville Power Administration (BPA) to determine whether the fish screening devices meet National Marine Fisheries Service (NMFS) criteria to promote safe and timely fish passage. Evaluations consist of measuring velocities in front of the screens, using an underwater camera to look at the condition and environment in front of the screens, and noting the general condition and operation of the sites. Results of the evaluations in 2005 include the following: (1) Most approach velocities met the NMFS criterion of less than or equal to 0.4 fps. Less than 13% of all approach measurements exceeded the criterion, and these occurred at 10 of the sites. Flat-plate screens had more problems than drum screens with high approach velocities. (2) Bypass velocities generally were greater than sweep velocities, but sweep velocities often did not increase toward the bypass. The latter condition could slow migration of fish through the facility. (3) Screen and seal materials generally were in good condition. (4) Automated cleaning brushes generally functioned properly; chains and other moving parts were typically …
Date:
February 1, 2006
Creator:
Chamness, Mickie; Abernethy, C. & Tunnicliffe, Cherylyn (PNNL)
Object Type:
Report
System:
The UNT Digital Library
Washington Phase II Fish Diversion Screen Evaluations in the Yakima River Basin, 2004-2005 Annual Report.
In 2004, the Pacific Northwest National Laboratory (PNNL) evaluated 25 Phase II fish screen sites in the Yakima River Basin as part of a multi-year project for the Bonneville Power Administration on the effectiveness of fish screening devices. PNNL collected data to determine whether velocities in front of the screens and in the bypasses met the National Oceanic and Atmospheric Administration Fisheries (NOAA Fisheries, formerly the National Marine Fisheries Service (NMFS)) criteria to promote safe and timely fish passage. In addition, PNNL conducted underwater video surveys to evaluate the environmental and operational conditions of the screen sites with respect to fish passage. Based on evaluations in 2004, PNNL concluded that: (1) In general, water velocity conditions at the screen sites met fish passage criteria set by NOAA Fisheries. (2) Conditions at most facilities would be expected to provide for safe juvenile fish passage. (3) Automated cleaning brushes generally functioned properly; chains and other moving parts were typically well-greased and operative. (4) Removal of sediment buildup and accumulated leafy and woody debris could be improved at some sites. (5) Conditions at some facilities indicate that operation and/or maintenance should be modified to improve passage conditions for juvenile fish. For example, Taylor …
Date:
February 1, 2006
Creator:
Vucelick, Jessica; McMichael, Geoffrey & Chamness, Mickie
Object Type:
Report
System:
The UNT Digital Library
Workforce Planning Guide
Report of the Texas State Auditor's Office related to assisting agencies with their workforce planning processes and in developing their workforce plans.
Date:
February 2006
Creator:
Texas. Office of the State Auditor.
Object Type:
Report
System:
The Portal to Texas History
Yoakum Herald-Times (Yoakum, Tex.), Vol. 114, No. 5, Ed. 1 Wednesday, February 1, 2006
Weekly newspaper from Yoakum, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
[Yolanda King speaks at 9th Annual Equity and Diversity Conference, 1]
Photograph of Yolanda King speaking at the 9th Annual Equity and Diversity Conference, sponsored by UNT's Division of Equity and Diversity. King can be seen standing behind a podium on the right side of the photograph, looking out past the camera. She is grabbing the side of the podium with her left hand.
Date:
February 2006
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library
[Yolanda King speaks at 9th Annual Equity and Diversity Conference, 2]
Photograph of Yolanda King speaking at the 9th Annual Equity and Diversity Conference, sponsored by UNT's Division of Equity and Diversity. King can be seen in the center of the photograph, facing to the left of the camera. She is furrowing her eyebrows and gesturing with both hands.
Date:
February 2006
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library