Safety Evaluation of a Geological Repository
The Law of 30 December 1991 [1] confers to Andra the mission of assessing the feasibility of a repository of high-level and long-lived (HLLL) waste in a deep geological formation.
The Law of 30 December 1991 [1] confers to Andra the mission of assessing the feasibility of a repository of high-level and long-lived (HLLL) waste in a deep geological formation.
The "Summary Report of Commercial Reactor Criticality Data for Catawba Unit 1" contains the detailed information necessary to perform commercial reactor criticality (CRC) analyses for the Catawba Unit 1 reactor.
This Plan outlines the Department of Energy’s (DOE) current strategy and planning for
developing and implementing the transportation system required to transport spent nuclear fuel
(SNF) and high-level radioactive waste (HLW) from where the material is generated or stored to
the proposed repository at Yucca Mountain, Nevada. The Plan describes how DOE’s Office of
Civilian Radioactive Waste Management (OCRWM) intends to develop and implement a safe,
secure and efficient transportation system and how stakeholder collaboration will contribute to
U.S. Nuclear Regulatory Commission Interim Staff Guidance 8 (ISG-8) for burnup credit covers actinides only, a position based primarily on the lack of definitive critical experiments and adequate radiochemical assay data that can be used to quantify the uncertainty associated with fission product credit.
This Record of Decision has been prepared pursuant to the Regulations of
the council on Environmental Quality, 40 CFR Part 1805, on the selection of a
strategy for the disposal of commercially-generated radioactive wastes and the
supporting program of research and development.
The United States Department of Energy has decided to (1) adopt a strategy to
develop mined geologic repositories for disposal of commercially-generated
high-level and transuranic radioactive wastes (while continuing to examine
The Interim Staff Guidance on burnup credit (ISG-8) for spent fuel in storage and transportation casks, issued by the Nuclear Regulatory Commission’s Spent Fuel Project Office, recommends a burnup measurement for each assembly to confirm the reactor record and compliance with the assembly burnup value used for loading acceptance. This recommendation is intended to prevent unauthorized loading (misloading) of assemblies due to inaccuracies in reactor burnup records and/or improper assembly identification, thereby ensuring that the appropriate subcritical margin is maintained.
Uncertainties in the predicted isotopic concentrations in spent nuclear fuel represent one of the largest
sources of overall uncertainty in criticality calculations that use burnup credit. The methods used to
propagate the uncertainties in the calculated nuclide concentrations to the uncertainty in the predicted
neutron multiplication factor (keff) of the system can have a significant effect on the uncertainty in the
safety margin in criticality calculations and ultimately affect the potential capacity of spent fuel transport
Crystal River Unit 3 License Renewal Application being renewed by Florida Power Corporation, doing business as Progress Energy Florida, Inc.
The Blue Ribbon Commission on America’s Nuclear Future (BRC) asked us to study whether
occupational safety and health conditions in today's U.S. nuclear industry are reasonably safe,
and if those conditions have improved since the Three Mile Island event in 1979. The BRC also
asked us to look to the future, to try to anticipate worker safety and health risks that should be
addressed by the industry, its government regulators and private watchdogs.
Over the eight weeks allotted, we performed a limited review of the literature and spoke with