scholarly journals Review of passive groundwater remediation systems: Lessons learned Oak Ridge Y-12 Plant, Oak Ridge, Tennessee

1997 ◽  
Author(s):  
Keyword(s):  
Groundwater Remediation ◽  
Lessons Learned ◽  
Oak Ridge

Revision of NNSA Packaging Certification Division’s Safety Guide 100 (SG-100)

2004 ◽  
Author(s):  
Matthew R. Feldman
Keyword(s):  
National Laboratory ◽  
Lessons Learned ◽  
National Standards ◽  
Guidance Document ◽  
Package Design ◽  
Oak Ridge ◽  
The Past ◽  
Nuclear Security ◽  
Analytical Tools ◽  
Transportation Technologies

The Transportation Technologies Group (TTG) of Oak Ridge National Laboratory (ORNL) is currently tasked, by National Nuclear Security Administration (NNSA) Service Center (SC), Office of technical Support (OTS), National Security Department (NSD), Packaging Certification Division (PCD), to revise the Defense Programs’ Safety Guide 100 (SG-100). SG-100, formally entitled “Design Guide for Packaging and Offsite Transportation of Nuclear Components, Special Assemblies, and Radioactive Materials Associated with the Nuclear Explosives and Weapons Safety Program” is being revised to reflect current regulations as well as to incorporate lessons learned over the past several years. SG-100 was last published in 1994 as Revision 1, and has served as the key guidance document for the development of Defense Programs’ Type B package designs as well as their testing and testing and certification. Since that time, there have been two major revisions to the U.S. packaging and transportation regulations (due to revisions to US federal regulations, IAEA guidelines, and national standards), re-engineering of the DOE establishing the semi-autonomous NNSA, as well as numerous improvements in the analytical tools and methodologies used in package design and confirmatory review. This revision to SG-100 will capture these changes as well as reflect various lessons learned from certification reviews which have taken place over the past decade. TTG has also been tasked by PCD to present a workshop based on the revised SG-100 in September 2004.

Independent Technical Reviews for Groundwater and Soil Remediation Projects at US Department of Energy Sites

2011 ◽  
Author(s):  
Dawn S. Kaback ◽  
Grover Chamberlain ◽  
John G. Morse ◽  
Scott W. Petersen
Keyword(s):  
Groundwater Remediation ◽  
Review Process ◽  
New Technologies ◽  
Lessons Learned ◽  
Department Of Energy ◽  
Background Information ◽  
The Us ◽  
Sensitive Issues ◽  
Alternative Solutions ◽  
Experienced Team

The US Department of Energy Office of Environmental Management has supported independent technical reviews of soil and groundwater projects at multiple DOE sites over the last 10 years. These reviews have resulted in significant design improvements to remedial plans that have accelerated cleanup and site closure. Many have also resulted in improved understanding of complex subsurface conditions, promoting better approaches to design and implementation of new technologies. Independent technical reviews add value, because they provide another perspective to problem solving and act as a check for especially challenging problems. By bringing in a team of independent experts with a broad experience base, alternative solutions are recommended for consideration and evaluation. In addition, the independence of the panel is significant, because it is able to address politically sensitive issues. The expert panel members typically bring lessons learned from other sites to help solve the DOE problems. In addition, their recommendations at a particular site can often be applied at other sites, making the review even more valuable. The review process can vary, but some common lessons ensure a successful review: • Use a multi-disciplinary broadly experienced team; • Engage the panel early and throughout the project; • Involve regulators and stakeholders in the workshop, if appropriate; • Provide sufficient background information; • Close the workshop with a debriefing followed by a written report. Many groundwater remediation challenges remain at DOE sites. Independent technical reviews have and will ensure that the best capabilities and experience are applied to reduce risks and uncertainties.

scholarly journals The North American Carbon Program Multi-scale Synthesis and Terrestrial Model Intercomparison Project – Part 2: Environmental driver data

2014 ◽  
Vol 7 (6) ◽  
pp. 2875-2893 ◽  
Author(s):  
Y. Wei ◽  
S. Liu ◽  
D. N. Huntzinger ◽  
A. M. Michalak ◽  
N. Viovy ◽  
...  
Keyword(s):  
North American ◽  
Lessons Learned ◽  
Environmental Data ◽  
Data Sets ◽  
Model Intercomparison ◽  
Standard Format ◽  
Oak Ridge ◽  
Multi Scale ◽  
Intercomparison Project ◽  
Environmental Driver

Abstract. Ecosystems are important and dynamic components of the global carbon cycle, and terrestrial biospheric models (TBMs) are crucial tools in further understanding of how terrestrial carbon is stored and exchanged with the atmosphere across a variety of spatial and temporal scales. Improving TBM skills, and quantifying and reducing their estimation uncertainties, pose significant challenges. The Multi-scale Synthesis and Terrestrial Model Intercomparison Project (MsTMIP) is a formal multi-scale and multi-model intercomparison effort set up to tackle these challenges. The MsTMIP protocol prescribes standardized environmental driver data that are shared among model teams to facilitate model–model and model–observation comparisons. This paper describes the global and North American environmental driver data sets prepared for the MsTMIP activity to both support their use in MsTMIP and make these data, along with the processes used in selecting/processing these data, accessible to a broader audience. Based on project needs and lessons learned from past model intercomparison activities, we compiled climate, atmospheric CO2 concentrations, nitrogen deposition, land use and land cover change (LULCC), C3 / C4 grasses fractions, major crops, phenology and soil data into a standard format for global (0.5° × 0.5° resolution) and regional (North American: 0.25° × 0.25° resolution) simulations. In order to meet the needs of MsTMIP, improvements were made to several of the original environmental data sets, by improving the quality, and/or changing their spatial and temporal coverage, and resolution. The resulting standardized model driver data sets are being used by over 20 different models participating in MsTMIP. The data are archived at the Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC, http://daac.ornl.gov) to provide long-term data management and distribution.

Oak Ridge Reservation Department of Energy Facilities: Waste Management Challenges and Success Stories Focusing on Waste Minimization

2003 ◽  
Author(s):  
Angie Brill ◽  
Jeff Scott ◽  
John Patterson
Keyword(s):  
Waste Management ◽  
Decision Process ◽  
National Laboratory ◽  
Lessons Learned ◽  
Department Of Energy ◽  
Waste Minimization ◽  
Oak Ridge ◽  
Critical Elements ◽  
Success Stories ◽  
Process Waste

Waste generation and disposition is a challenge all face in the environmental restoration business. Over the past three years Safety and Ecology Corporation (SEC) working with Bechtel Jacobs Company, LLC (BJC) the Management and Integration subcontractor for the U.S. Department of Energy (DOE) have been able to minimize the volume of waste (mixed, hazardous, and radiological) that is disposed of and increased the volume for release, reuse, and recycle. This paper will focus on the success and challenges of several projects at the Oak Ridge National Laboratory (ORNL) and one project at the East Tennessee Technology Park (ETTP). SEC is one of four Remedial Action/Decontamination & Decommissioning (RADD) subcontractors selected by BJC to support site clean up goals. Several of these RADD projects awarded to SEC will be used to illustrate the waste management process and the challenges/successes to completion. All these projects were “fixed price” with defined milestones keyed into award fee for BJC and regulatory milestones for DOE. From the first project completed under the RADD subcontract to the most recent the waste disposition approach has been refined and a decision process developed. This decision process will be discussed in the paper and illustrated graphically to indicate the critical elements to selecting the most appropriate waste disposition option. This paper will focus on the following items associated with waste minimization efforts at the Oak Ridge Reservation DOE facilities. • Waste disposition decision process. • Waste disposition options — recycle, reuse, salvage, and disposal. • Elements of integration required for successful pre-planning — design and implementation. • Waste disposition challenges and solutions. • Decontamination to reduce mixed waste volumes. Release surveys required to disposition waste for reuse/recycle. • Lessons learned that will be integrated in future projects.

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