scholarly journals Where Are We Now: The U.S. Department of Energy Makes Strides to Advance Offshore Wind in the United States, Wind Program Newsletter: October 2012 Edition (Newsletter)

2012 ◽  
Author(s):  
Not Given Author
Keyword(s):  
United States ◽  
The United States ◽  
Department Of Energy ◽  
Offshore Wind ◽  
The U.S

scholarly journals Drop Test Results for the Combustion Engineering Model No. ABB-2901 Fuel Pellet Shipping Package

2004 ◽  
Author(s):  
Ronald S. Hafner ◽  
Gerald C. Mok ◽  
Lisle G. Hagler
Keyword(s):  
United States ◽  
Lawrence Livermore National Laboratory ◽  
National Laboratory ◽  
Preliminary Test ◽  
Nuclear Regulatory Commission ◽  
The United States ◽  
Department Of Energy ◽  
Drop Test ◽  
Regulatory Commission ◽  
The U.S

The U.S. Nuclear Regulatory Commission (USNRC) contracted with the Packaging Review Group (PRG) at Lawrence Livermore National Laboratory (LLNL) to conduct a single, 30-ft shallow-angle drop test on the Combustion Engineering ABB-2901 drum-type shipping package. The purpose of the test was to determine if bolted-ring drum closures could fail during shallow-angle drops. The PRG at LLNL planned the test, and Defense Technologies Engineering Division (DTED) personnel from LLNL’s Site-300 Test Group executed the plan. The test was conducted in November 2001 using the drop-tower facility at LLNL’s Site 300. Two representatives from Westinghouse Electric Company in Columbia, South Carolina (WEC-SC); two USNRC staff members; and three PRG members from LLNL witnessed the preliminary test runs and the final test. The single test clearly demonstrated the vulnerability of the bolted-ring drum closure to shallow-angle drops—the test package’s drum closure was easily and totally separated from the drum package. The results of the preliminary test runs and the 30-ft shallow-angle drop test offer valuable qualitative understandings of the shallow-angle impact. • A drum package with a bolted-ring closure may be vulnerable to closure failure by the shallow-angle drop, even if results of the steep-angle drop demonstrate that the package is resistant to similar damage. • Although there exist other mechanisms, the shallow-angle drop produces closure failure mainly by buckling the drum lid and separating the drum lid and body, which the bolted ring cannot prevent. • Since the closure failure by the shallow-angle drop is generated mainly by structural instabilities of a highly discontinuous joint, the phenomenon can be rather unpredictable. Thus, a larger-than-normal margin of safety is recommended for the design of such packages. • The structural integrity of the bolted-ring drum closure design depends on a number of factors. To ensure that the drum closure survives the shallow-angle drop, the following general qualitative rules should be observed: – The drum closure components should be quality products made of ductile materials, and the torque value for tightening the bolted ring should be included in the SAR and operating procedures to ensure quality. – The package should not be too heavy. – The package internal structure should be impact-absorbent and resistant to disintegration and collapse under high compressive load. However, a strong internal structure may defeat the purpose of protecting the containment vessel from damage during a free drop. • If not previously tested, drum packages with bolted-ring drum closures should be drop-tested at shallow angles. Due to the unpredictable nature of the behavior, the demonstration should be completed by test and on a case-by-case basis. The test plan should take into account the behavior’s sensitivity to the details of the package design and the impact condition. • Because the shallow-angle drop can open the drum closure, organizations using these types of drum packages should assess the consequences of exposing the radioactive contents in the containment vessel to unconsidered external elements or conditions. This work was supported by the United States Nuclear Regulatory Commission under a Memorandum of Understanding with the United States Department of Energy, and performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract W-7405-Eng-48.

scholarly journals Rapid, parallel identification of pathways for catabolism of lignin-derived aromatic compounds

2017 ◽  
Author(s):  
Jacob H. Cecil ◽  
Joshua K. Michener
Keyword(s):  
United States ◽  
World Wide ◽  
The United States ◽  
Department Of Energy ◽  
Public Access ◽  
United States Government ◽  
Sponsored Research ◽  
States Government ◽  
The U.S ◽  
Do So

This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Decommissioning in the United States: Past, Present and Future

2009 ◽  
Author(s):  
Jas S. Devgun
Keyword(s):  
United States ◽  
Nuclear Power ◽  
Power Plants ◽  
Spent Nuclear Fuel ◽  
The United States ◽  
Lessons Learned ◽  
Department Of Energy ◽  
Research Reactors ◽  
The Past ◽  
The U.S

The experience related to decommissioning of nuclear facilities in the United States is very substantial and covers power reactors, research reactors, and many facilities in the Department of Energy complex. The focus of this paper however is on the commercial power plants. With 104 operating reactors, the U.S. fleet of civilian reactors is still the largest in the world. Nuclear power industry in the United States has undergone a dramatic upturn after decades of stalemate. One effect of this nuclear renaissance has been that the plans have changed for several reactors that were initially destined for decommissioning. Instead, the focus now is on relicensing of the reactors and on power uprates. In fact, after the peak period between 1987 and 1998, no additional power reactors have been shutdown. On the contrary, power uprates in the past twenty years have added a cumulative capacity equivalent to five new reactors. Almost all the operating reactors plan to have license extensions, thus postponing the eventual decommissioning. Nevertheless, in addition to the 9 reactors where licenses have been terminated following decommissioning, 12 power and early demonstration reactors and 14 test & research reactors are permanently shutdown and are in decommissioning phase. Substantial experience and lessons learned are available from the U.S. projects that are of value to the international decommissioning projects, especially where such projects are in early stages. These lessons cover a wide array of areas from decommissioning plans, technology applications, large component removal, regulatory and public interface, decommissioning funding and costs, clean up criteria, surveys of the decommissioned site, and license termination. Additionally, because of the unavailability of a national spent fuel disposition facility, most decommissioning sites are constructing above ground interim storage facilities for the spent nuclear fuel. The U.S. nuclear power projects are also gearing up for the design and licensing of new reactors. Lessons from the past are useful in the development of such designs so that along with the other factors, the designs are optimized for eventual decommissioning as well. This paper provides an overview of the past reactor decommissioning, lessons learned from the past experience, and status of the current decommissioning activities and issues. It also presents some long term projections for the future of decommissioning in the United States.

scholarly journals The Futures of the Pandemic in the USA: A Timed Intervention Model

2020 ◽  
Author(s):  
Gary D. Hachtel ◽  
John D. Stack ◽  
Jordan A. Hachtel
Keyword(s):  
United States ◽  
The United States ◽  
Department Of Energy ◽  
Public Access ◽  
United States Government ◽  
List Type ◽  
Social Distancing ◽  
States Government ◽  
The Usa ◽  
The U.S

AbstractWe propose a novel Timed InterventionS, P, E, I, Q, R, D model for projecting the possible futures of the COVID-19 pandemic in the USA. The proposed model introduces a series of timed interventions that can account for the influence of real time changes in government policy and social norms. We consider three separate types of interventions:Protective interventions. Where population moves from susceptible to protected corresponding to mask mandates, stay-at-home orders and/or social distancing.Release interventions. Where population moves from protected to susceptible corresponding to social distancing mandates and practices being lifted by policy or pandemic fatigue.Vaccination interventions. Where population moves from susceptible, protected, and exposed to recovered (meaning immune) corresponding to the mass immunization of the U.S. Population.By treating the pandemic with timed interventions, we are able to model the pandemic extremely effectively, as well as directly predicting of the course of the pandemic under differing sets of intervention schedules. We show that without prompt effective protective/vaccination interventions the pandemic will extend all the way into 2022 and result in many millions of deaths in the U.S.†Copyright NoticeThis manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

An Update on Clearance Initiatives in the United States

2003 ◽  
Author(s):  
Jas Devgun ◽  
Harold Peterson ◽  
Cheryl Trottier
Keyword(s):  
United States ◽  
Environmental Protection Agency ◽  
The United States ◽  
Nuclear Industry ◽  
Department Of Energy ◽  
National Standards ◽  
National Standard ◽  
Solid Materials ◽  
Federal Level ◽  
The U.S

A number of initiatives have been underway in the United States in the past several years in the area of clearance of solid materials both at the federal level and at the industry and professional society level. Clearance of solid materials is an issue that has significant economic consequences for decommissioning projects where large quantities of such materials are generated. The cost of treating these materials as low-level radioactive waste (LLW) is prohibitive. A regulatory mechanism could remove economic burdens on such projects while maintaining the public health and safety standards. At the federal level major initiatives are being undertaken by the U.S. Nuclear Regulatory Commission (NRC) and the U.S. Department of Energy (DOE). The U.S. Environmental Protection Agency (EPA) has also taken some steps in this area under their Clean Materials Program. In the private sector, the nuclear industry is active through the Nuclear Energy Institute (NEI). The Health Physics Society (HPS) prepared the ANSI/HPS N13.12 standard about four years ago, which has been approved by the American National Standards Institute (ANSI). The American Nuclear Society (ANS) has recently released a Position Statement on the clearance of licensed materials from nuclear sites and the Society has been active in the national deliberations on this subject. The National Academies (NA) conducted a study for the NRC on alternatives for controlling the release of solid materials and their report was issued in 2002. The steel and concrete industries have also participated in the NRC rulemaking process and are opposed to any release standards for materials that may have residual radioactivity on them. This was clear from industry representatives at the stakeholder workshops conducted by the NRC as a part of the enhanced rulemaking effort. A review of all these initiatives shows the intensity of the debate but it also highlights the need for one national standard, preferably dose based, thus allowing site-specific application through derived radioactivity limits. Thus, interagency cooperation and agreement are necessary at the federal level. Consensus is necessary with standard writing organizations, professional societies, public and other stakeholders. This paper provides an overview of the developments in the United States in the area of clearance of solid materials, a brief comparison to international activities, and a discussion of key points for consensus building that is necessary for any initiative to succeed.

An American Language

2018 ◽  
Author(s):  
Rosina Lozano
Keyword(s):  
United States ◽  
National Policy ◽  
The United States ◽  
Spanish Language ◽  
Spanish Speakers ◽  
Language Recognition ◽  
Political Language ◽  
Political Issue ◽  
History Of ◽  
The U.S

An American Language is a political history of the Spanish language in the United States. The nation has always been multilingual and the Spanish language in particular has remained as an important political issue into the present. After the U.S.-Mexican War, the Spanish language became a language of politics as Spanish speakers in the U.S. Southwest used it to build territorial and state governments. In the twentieth century, Spanish became a political language where speakers and those opposed to its use clashed over what Spanish's presence in the United States meant. This book recovers this story by using evidence that includes Spanish language newspapers, letters, state and territorial session laws, and federal archives to profile the struggle and resilience of Spanish speakers who advocated for their language rights as U.S. citizens. Comparing Spanish as a language of politics and as a political language across the Southwest and noncontiguous territories provides an opportunity to measure shifts in allegiance to the nation and exposes differing forms of nationalism. Language concessions and continued use of Spanish is a measure of power. Official language recognition by federal or state officials validates Spanish speakers' claims to US citizenship. The long history of policies relating to language in the United States provides a way to measure how U.S. visions of itself have shifted due to continuous migration from Latin America. Spanish-speaking U.S. citizens are crucial arbiters of Spanish language politics and their successes have broader implications on national policy and our understanding of Americans.

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