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BWR Axial Profile
BWR Axial Profile
Opinion: Rep. John Shimkus in the Chicago Tribune: Yucca Mountain is the Fastest, Best, and Most Viable Solution
Opinion: Rep. John Shimkus in the Chicago Tribune: Yucca Mountain is the Fastest, Best, and Most Viable Solution
Our country faces a mounting challenge when it comes to nuclear energy: the safe, long-term disposal of spent fuel from commercial reactors and leftover waste from defense activity. It's a challenge with a decades-long history.
Benchmarks for Quantifying Fuel Reactivity Depletion Uncertainty
Benchmarks for Quantifying Fuel Reactivity Depletion Uncertainty
Analytical methods, described in this report, are used to
systematically determine experimental fuel sub-batch
reactivities as a function of burnup. Fuel sub-batch reactivities
are inferred using more than 600 in-core pressurized water
reactor (PWR) flux maps taken during 44 cycles of operation
at the Catawba and McGuire nuclear power plants. The
analytical methods systematically search for fuel sub-batch
reactivities that minimize differences between measured and
computed reaction rates, using Studsvik Scandpower’s
EPRI Review of Geologic Disposal for Used Fuel and High Level Radioactive Waste: Volume IV - Lessons Learned
EPRI Review of Geologic Disposal for Used Fuel and High Level Radioactive Waste: Volume IV - Lessons Learned
The effective termination of the Yucca Mountain program by the U.S. Administration in 2009 has further delayed the construction and operation of a permanent disposal facility for used fuel and high level radioactive waste (HLW) in the United States. In concert with this decision, the President directed the Energy Secretary to establish the Blue Ribbon Commission on America's Nuclear Future to review and provide recommendations on options for managing used fuel and HLW.
Joint Resolution, Approving the site at Yucca Mountain, Nevada, for the development of a repository for the disposal of high-level radioactive waste and spent nuclear fuel, pursuant to the Nuclear Waste Policy Act of 1982.
Joint Resolution, Approving the site at Yucca Mountain, Nevada, for the development of a repository for the disposal of high-level radioactive waste and spent nuclear fuel, pursuant to the Nuclear Waste Policy Act of 1982.
Joint Resolution, Approving the site at Yucca Mountain, Nevada, for the development of a repository<br/>for the disposal of high-level radioactive waste and spent nuclear fuel, pursuant<br/>to the Nuclear Waste Policy Act of 1982.
Utilization of the EPRI Depletion Benchmarks for Burnup Credit Validation
Utilization of the EPRI Depletion Benchmarks for Burnup Credit Validation
Pressurized water reactor (PWR) burnup credit validation is
demonstrated using the benchmarks for quantifying fuel reactivity
decrements, published as Benchmarks for Quantifying Fuel Reactivity
Depletion Uncertainty, Electric Power Research Institute (EPRI)
report 1022909. This demonstration uses the depletion module
TRITON (Transport Rigor Implemented with Time-Dependent
Operation for Neutronic Depletion) available in the SCALE 6.1
(Standardized Computer Analyses for Licensing Evaluations) code
Feasibility of Direct Disposal of Dual-Purpose Canisters-Options for Assuring Criticality Control
Feasibility of Direct Disposal of Dual-Purpose Canisters-Options for Assuring Criticality Control
The concept of direct disposal of dual-purpose canisters (DPCs) has not been previously considered
for the Yucca Mountain geologic repository because of concerns, among other reasons,
about degradation of the reactivity-control material over the relatively long period of the repository
analyses. Aluminum-based neutron absorber materials, typically used in DPCs, are not
expected to have sufficient corrosion resistance necessary to retain their integrity over a 10,000+
Burnup Credit — Contribution to the Analysis of the Yankee Rowe Radiochemical Assays
Burnup Credit — Contribution to the Analysis of the Yankee Rowe Radiochemical Assays
This report presents a methodology for validation of the isotopic
contents of spent light water reactor fuel for actinide-only burnup
credit with additional high-quality radiochemistry assay (RCA) data
obtained from the Yankee Rowe pressurized water reactor. The
additional Yankee Rowe RCA data were not included in previous
isotopic validation studies for burnup credit due to the difficulty of
accurately modeling the complex Yankee Rowe fuel assembly design
using the SAS2H one-dimensional sequence of the earlier SCALE
Sensitivity and Uncertainty Analysis of Commercial Reactor Criticals for Burnup Credit
Sensitivity and Uncertainty Analysis of Commercial Reactor Criticals for Burnup Credit
This paper provides insights into the neutronic similarities between a representative high-capacity rail-transport cask containing typical pressurized water reactor (PWR) spent nuclear fuel assemblies and critical reactor state-points, referred to as commercial reactor critical (CRC) state-points. Forty CRC state-points from five PWRs were analyzed, and the characteristics of CRC state-points that may be applicable for validation of burnup-credit criticality safety calculations for spent fuel transport/storage/disposal systems were identified.
Review of Yucca mountain Disposal Criticality Studies
Review of Yucca mountain Disposal Criticality Studies
Burn-up Credit Criticality Safety Benchmark - Phase VII, UO2 Fuel: Study of Spent Fuel Compositions for Long-term Disposal
Burn-up Credit Criticality Safety Benchmark - Phase VII, UO2 Fuel: Study of Spent Fuel Compositions for Long-term Disposal
Review of Results for the OECD/NEA Phase VII Benchmark: Study of Spent Fuel Compositions for Long-Term Disposal
Review of Results for the OECD/NEA Phase VII Benchmark: Study of Spent Fuel Compositions for Long-Term Disposal
Analysis of Experimental Data for High Burnup PWR Spent Fuel Isotopic Validation--Calvert Cliffs, Takahama, and Three Mile Island Reactors
Analysis of Experimental Data for High Burnup PWR Spent Fuel Isotopic Validation--Calvert Cliffs, Takahama, and Three Mile Island Reactors
This report is part of a report series designed to document benchmark-quality radiochemical isotopic
assay data against which computer code accuracy can be quantified to establish the uncertainty and bias
associated with the code predictions. The experimental data included in the report series were acquired
from domestic and international programs and include spent fuel samples that cover a large burnup range.
The measurements analyzed in the current report, for which experimental data is publicly available,
Evaluation of a Spent Fuel Repository at Yucca Mountain, Nevada
Evaluation of a Spent Fuel Repository at Yucca Mountain, Nevada
In June 2008, the U.S. Department of Energy (DOE) submitted a license application to the U.S. Nuclear Regulatory Commission (NRC) for the construction of a geologic repository at Yucca Mountain, Nevada, for the disposal of spent nuclear fuel and high-level radioactive waste. The license application was accepted for formal NRC review in September 2008. Throughout the more than 20-year history of the Yucca Mountain project, EPRI has performed independent assessments of key technical and scientific issues to facilitate an understanding of overall repository performance.
Revisiting America's Nuclear Waste Policy
Revisiting America's Nuclear Waste Policy
With the first 100 days of the Obama Administration behind us, the Institute for 21st Century Energy presents
this nuclear waste policy document that recounts the history of the country’s nuclear waste policy, discusses
the mechanics of the issue, and off ers specifi c recommendations to the Obama Administration and the
U.S. Congress.
Two weeks aft er the 2008 presidential election, the Institute released dozens of energy policy recommendations for
the incoming administration and 111th Congress. Ten recommendations focused on committing to and expanding
Consolidated Interim Storage of Commercial Spent Nuclear Fuel
Consolidated Interim Storage of Commercial Spent Nuclear Fuel
Approximately 54,000 tons of spent nuclear fuel are stored at operating nuclear power
plants and several decommissioned power plants throughout the country. Spent fuel
storage at these sites was never intended to be permanent. The current Federal plan is to
place the fuel in a repository for permanent disposal in Nevada at Yucca Mountain.
Recently, appropriations committees in Congress suggested building one or more Federal
sites for consolidated interim storage of spent fuel. Several reasons were identified. The
T&MSS Implementation Plan for Developing and Implementing a Method for Early Evaluation of Site Suitability
T&MSS Implementation Plan for Developing and Implementing a Method for Early Evaluation of Site Suitability
This Implementation Plan provides the scope, schedule, and funding needed to develop and implement a method for early evaluation of site suitability. The following is the sequence of events which resulted in the preparation of this implementation plan:<br/>1. On December 24, 1990, John W. Bartlett, Director of the Office of Civilian Radioactive Waste Management (OCRWM), transmitted guidance to Carl P. Gertz, Associate Director of the Office of Geologic Disposal (OGD), to develop an OGD Plan for this effort. <br/>2.
Yucca Mountain - Nevada's Perspective
Yucca Mountain - Nevada's Perspective
Yucca Mountain—that barren rise in the desert ninety miles from Las Vegas—is the nation‘s only site identified for the potential location of the first ge ological repository for commercially-generated HLNW and SNF. Many assume
that Yucca Mountain has geologic and climatic qualities that make it uniquely
suitable to isolate the thousands of metric tons of the world‘s most lethal, long lived waste currently accumulating at 104 operating nuclear power plants across the United States.
Unfortunately, Yucca Mountain is an exceptionally bad site,
EPRI Review of Geologic Disposal for Used Fuel and High-Level Radioactive Waste: Volume III - Review of National Repository Programs
EPRI Review of Geologic Disposal for Used Fuel and High-Level Radioactive Waste: Volume III - Review of National Repository Programs
The effective termination of the Yucca Mountain program by the U.S. Administration in 2009 has left the U.S. program for management of used fuel and high level radioactive waste (HLW) in a state of uncertainty.
Underlying Yucca Mountain: The Interplay of Geology and Policy in Nuclear Waste Disposal
Underlying Yucca Mountain: The Interplay of Geology and Policy in Nuclear Waste Disposal
Nuclear waste disposal in the USA is a difficult policy issue infused with
science, technology, and politics. This issue provides an example of the co-production
of scientific knowledge and politics through public policy. The proponents of a
repository site at Yucca Mountain, Nevada, argue that their decision to go ahead
with the site is based on ‘sound science’, but the science they use to uphold their
decision is influenced by politics. In turn, the politics of site selection has been altered
EPRI Review of Geologic Disposal for Used Fuel and High Level Radioactive Waste: Volume II--U.S. Regulations for Geologic Disposal
EPRI Review of Geologic Disposal for Used Fuel and High Level Radioactive Waste: Volume II--U.S. Regulations for Geologic Disposal
U.S. efforts to site and construct a deep geologic repository for used fuel and high level radioactive waste (HLW) proceeded sporadically over a three-decade period from the late 1950s until 1982, when the U.S. Congress enacted the Nuclear Waste Policy Act (NWPA) codifying a national approach for developing a deep geologic repository. Amendment of the NWPA in 1987 resulted in a number of dramatic changes in direction for the U.S. program, most notably the selection of Yucca Mountain as the only site of the three remaining candidates for continued investigation.
EPRI Yucca Mountain Total System Performance Assessment Code (IMARC) Version 10
EPRI Yucca Mountain Total System Performance Assessment Code (IMARC) Version 10
Since 1989, EPRI has been conducting independent assessments of the proposed deep geologic repository for the disposal of spent nuclear fuel (SNF) and high level radioactive waste (HLW) at Yucca Mountain, Nevada. EPRI pioneered application of the total system performance assessment (TSPA) approach for evaluating performance of geologic repository systems on a probabilistic basis. Along the way, EPRI developed the Integrated Multiple Assumptions and Release Code (IMARC) as its primary analytical tool for TSPA-based evaluations.
International Review Team Report: A Peer Review of the Yucca Mountain IMARC Total System Performance Assessment EPRI Model
International Review Team Report: A Peer Review of the Yucca Mountain IMARC Total System Performance Assessment EPRI Model
Since 1989, EPRI has been conducting independent assessments of the proposed deep geologic repository for the disposal of spent nuclear fuel and high level radioactive waste at Yucca Mountain, Nevada. EPRI pioneered application of the total system performance assessment (TSPA) approach for evaluating performance of geologic repository systems on a probabilistic basis. Along the way, EPRI developed the Integrated Multiple Assumptions and Release Code (IMARC) as its primary analytical tool for TSPA-based evaluations.
EPRI Review of Geologic Disposal for Used Fuel and High-Level Radioactive Waste: Volume III --Review of National Repository Programs
EPRI Review of Geologic Disposal for Used Fuel and High-Level Radioactive Waste: Volume III --Review of National Repository Programs
The effective termination of the Yucca Mountain program by the U.S. Administration in 2009
has left the U.S. program for management of used fuel and high level radioactive waste (HLW)
in a state of uncertainty. In concert with this major policy reset and in response to the resulting
policy vacuum, the President directed the Energy Secretary to establish the Blue Ribbon
Commission on America’s Nuclear Future (BRC) “…to conduct a comprehensive review of
policies for managing the back end of the nuclear fuel cycle and to provide recommendations for