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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 379 records · Page 21
All sourcesNASA NTRSDOE OSTI
DOE OSTI2013

An Application of the SSHAC Level 3 Process to the Probabilistic Seismic Hazard Analysis for Nuclear Facilities at the Hanford Site, Eastern Washington, USA

Under the sponsorship of the US Department of Energy (DOE) and the electric utility Energy Northwest, the Pacific Northwest National Laboratory (PNNL) is conducting a probabilistic seismic hazard analysis (PSHA) within the framework of a SSHAC Level 3 procedure (Senior Seismic Hazard Analysis Committee; Budnitz et al., 1997). Specifically, the project is being conducted following the guidelines and requirements specified in NUREG-2117 (USNRC, 2012b) and consistent with approach given in the American Nuclear Standard ANSI/ANS-2.29-2008 Probabilistic Seismic Hazard Analysis. The collaboration between DOE and Energy Northwest is spawned by the needs of both organizations for an accepted PSHA with high levels of regulatory assurance that can be used for the design and safety evaluation of nuclear facilities. DOE committed to this study after performing a ten-year review of the existing PSHA, as required by DOE Order 420.1C. The study will also be used by Energy Northwest as a basis for fulfilling the NRC’s 10CFR50.54(f) requirement that the western US nuclear power plants conduct PSHAs in conformance with SSHAC Level 3 procedures. The study was planned and is being carried out in conjunction with a project Work Plan, which identifies the purpose of the study, the roles and responsibilities of all participants, tasks and their associated schedules, Quality Assurance (QA) requirements, and project deliverables. New data collection and analysis activities are being conducted as a means of reducing the uncertainties in key inputs to the PSHA. It is anticipated that the results of the study will provide inputs to the site response analyses at multiple nuclear facility sites within the Hanford Site and at the Columbia Generating Station.

Nuclear Facilities↗
DOE OSTI2014

DOE Zero Energy Ready Home Case Study: Montlake Modern - Seattle, Washington

This case study describes a DOE Zero Energy Ready Home in Seattle, WA, that scored HERS 42 without PV and a -1 with PV. This 3,192 ft2 custom home has 6-inch SIP walls, a 12-inch SIP roof, an R-28 ICF-insulated foundation slab edge with R-20 rigid foam under the slab; an air-to-water heat pump plus radiant floor heat; 100% LED lighting; filtered-fan-powered fresh air intake; triple-pane windows, 9.7 kWh PV for electric car charging station.

air-to-water heat pump↗
DOE OSTI2013

DOE Zero Energy Ready Home Case Study: Clifton View Homes, Coupeville, Washington

Ted Clifton, founder of Clifton View Homes, achieved an impressive Home Energy Rating System (HERS) score of 34 (without solar panels) on a two-story home completed in July 2011 that also earned him his first Challenge Home certification from the U.S. Department of Energy (DOE). This home also garnered a 2013 Housing Innovation Award in the "systems builder" category.

Challenge Home↗
DOE OSTI2013

DOE Zero Energy Ready Home Case Study: Dwell Development, Seattle, Washington

This Challenge Home is one of 42 homes in a micro-community of ultra-modern, energy-efficient homes built by Dwell Development on an urban gray-field site in South Seattle. Every home will achieve a 5-Star Built Green rating from the regional master builders association and meet the criteria of the Northwest ENERGY STAR program, which is more strict than the national ENERGY STAR criteria. Also, the home won a 2013 Housing Innovation Award in the "systems builder" category.

Building America↗
DOE OSTI2013

DOE Zero Energy Ready Home Case Study: TC Legend Homes, Seattle, Washington

This house incorporates slab-on-grade, EPS roof, and radiant heating with an air-to-water heat pump that also preheats domestic hot water. Without counting in the solar panels, the home earns a home energy rating system (HERS) score of 37, with projected utility bills of about $740 a year. With the 6.4-kW photovoltaic power system installed on the roof, the home’s HERS scores drops to -1 and utility bills for the all-electric home drop to zero. This home was awarded a 2013 Housing Innovation Award in the affordable builder category.

Building America↗
DOE OSTI2013

New Whole-House Solutions Case Study: Technology Solutions for New Manufactured Homes, Idaho, Oregon, and Washington

The Building America Partnership for Improved Residential Construction, the Bonneville Power Administration (BPA), and Northwest Energy Works (NEW), the current Northwest Energy Efficient Manufactured Housing Program (NEEM) administrator, have been collaborating to conduct research on new specifications that would improve on the energy requirements of a NEEM home. In its role as administrator, NEW administers the technical specs, performs research and engineering analysis, implements ongoing construction quality management procedures, and maintains a central database with home tracking. This project prototyped and assessed the performances of cost-effective high performance building assemblies and mechanical systems that are not commonly deployed in the manufacturing setting. The package of measures is able to reduce energy used for space conditioning, water heating and lighting by 50 percent over typical manufactured homes produced in the northwest.

BA-PIRC↗
DOE OSTI2013

Existing Whole-House Solutions Case Study: Group Home Energy Efficiency Retrofit for 30% Energy Savings, Washington, D.C.

Energy efficiency retrofits (EERs) face many challenges on the path to scalability. Limited budgets, cost effectiveness, risk factors, and accessibility impact the type and the extent of measures that can be implemented feasibly to achieve energy savings goals. Group home retrofits can face additional challenges than those in single family homes – such as reduced access (occupant-in-place restrictions) and lack of incentives for occupant behavioral change. This project studies the specification, implementation, and energy savings from an EER in a group home, with an energy savings goal of 30%. This short term test report chronicles the retrofit measures specified, their projected cost-effectiveness using building energy simulations, and the short term test results that were used to characterize pre-retrofit and post-retrofit conditions. Additionally, the final report for the project will include analysis of pre- and post-retrofit performance data on whole building energy use, and an assessment of the energy impact of occupant interface with the building (i.e., window operation). Ultimately, the study’s results will be used to identify cost effective EER measures that can be implemented in group homes, given constraints that are characteristic of these buildings. Results will also point towards opportunities for future energy savings.

BA-PIRC↗
DOE OSTI2018

A Workshop on the History of Plutonium Processing at Hanford Washington as the Foundation for Modern-day Plutonium Process Science

Numerous national laboratories in the United States have roots related to the Manhattan Project that contributed to the end of World War II. The pioneering science and engineering that took place over the decades that followed continues to influence modern-day actinide-related research at those institutions, leading to unique strengths and cutting-edge ideas and perspectives. These same national laboratories also face a challenge: figuring out how to capture the expertise of a retiring workforce who had first-hand experience in these pioneering nuclear efforts. Recently, at PNNL a “Train-the-Trainer” approach has been piloted where mentors and mentees are paired together to develop and deliver interactive workshops on historical topics that relate to modern-day research, such as Plutonium Processing or Environmental Management of Legacy Nuclear Waste. This approach was used to develop a workshop that beings with the Historic Hanford process plutonium chemistry and engineering, describes its influence on current plutonium separation and process science, and then details the chemistry of plutonium as it progresses from a minor constituent in irradiated fuel to purified solid product. This workshop is targeted to the practitioner of applied science and technology wishing to gain a better understanding of the history and process-related chemistry of element 94 so that they may better direct the tools of their specific craft toward the present and future needs of plutonium science.

Smith, Frances N.↗
DOE OSTI2015

Development of a Numerical Wave Tank to Support WETS Activities, 3rd Marine Energy Technology Symposium (METS), Washington, D.C.

This paper outlines a suite of numerical methods developed to aid in the power prediction of Wave Energy Conversion (WEC) devices such as may be tested at the Navy's Wave Energy Test Site (WETS) in Hawaii. The NWT developed with the open-source OpenFOAM CFD solver has been successfully validated with well-known experimental data. Currently, work is in progress to combine drag data from CFD/SPH, WAMIT output and wave climate data at the site into a single time domain framework, to efficiently predict WEC power performance.

16 TIDAL AND WAVE POWER↗
DOE OSTI2021

Combined Structural Analysis of Core and Image Log of TGH 76-31 South East of Mt Baker, Washington State

Despite active volcanism, few geothermal energy resources have been developed in the Cascades Range. Temperature Gradient Hole 76-31 was drilled to ~440 m measured depth to probe for zones where fractures provide fluid conduits that transport deep volcanic heat to shallow depths that could support baseload, carbon neutral electrical generation. These zones were predicted by a Play Fairway assessment (PFA) of resource potential along a zone 11 km west-southwest of the summit of Mount Baker Volcano. Rock core, temperature logs, and an acoustic image log were obtained. By comparison to outcrops, the core has been initially interpreted as the Chilliwack group comprised of partially metamorphosed basaltic to andesitic volcanics. Core mapping reveals complex, steeply dipping networks of fractures and brecciation along slickensided strike slip faults; clay alteration is common in many of these structures. The majority of fractures are thoroughly healed by layers of chlorite and calcite; preservation of pyrite indicates anoxic conditions. The majority of fracture porosity resides in very dense fractures a few centimeters or less in length. The image log provides good insights into attitude of fractures that fully transect the core, but generally underestimates fracture density. The combination of complex, non-planar fracture zones containing many short fractures and healing promote misinterpretation of natural fracture attitude and density in the image log. The healing and anoxic minerals are consistent with the conductive temperature gradient measured in the well below a shallow isothermal zone, although, several fractures are open or only partially healed and resulted in fluid entries into the well. Here, the equilibrated measured temperature gradient of 64ºC/km and calculated heat flow of 145 mW/m2 is more than twice the regional average, indicating local influence of the Mt Baker magmatic system at the Little Park Creek TGH site.

Cascades↗
DOE OSTI2017

3D Geophysical Inversion Modeling of Ground Magnetic Data at Baker Hot Springs, Washington State, USA

Ground-based magnetic survey data were geophysically modelled in 3D as part of a play fairway exploration program at Baker hot springs. Here, a multi-step inversion method was used to address the issue of remanent magnetization in rocks of the study area. The geophysical modelling effort generated an effective susceptibility model that displays the 3D distribution and orientation of magnetization in the subsurface. Importantly, the magnetic modelling effort found that a strong, dipolar magnetic anomaly observed in the study area can be explained by a remanently magnetized body that is ~1¼ km long x ~200 m wide and extends from ~25-400 m below the surface. Geologically, this body may represent 1) an intrusion of reversely magnetized mafic rocks or 2) a magnetite-bearing fault zone. This rock body coincides spatially with Baker hot springs; the margins of this body or the fault structures within it are likely responsible for providing the permeability that gives rise to the hot springs.

Baker hot springs↗
DOE OSTI2017

Defining Nature and Extent of Contamination for the Waste Management Area C RCRA Corrective Action Process at the Hanford Site in Southeast Washington - 17403

Determination of the nature and extent of contamination is a critical task in any Resource Conservation and Recovery Act of 1976 (RCRA) Facility Investigation. Nature and extent are typically defined through field investigation results. In some cases, however, physical and/or programmatic limitations on field work can impede efforts to define nature and extent based on field work alone. Both physical and programmatic restrictions affected efforts to characterize soil contamination at Waste Management Area C, on the U.S. Department of Energy's Hanford Site. As a result, fate and transport modeling was undertaken to enhance the definition of the nature and extent of soil contamination at Waste Management Area C. (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2017

Analysis of Past Leaks from Waste Management Area C, Hanford, Washington - 17525

Waste Management Area C (WMA C) at the Hanford Site was actively used for several decades for storing radioactive waste in tanks, and therefore is alternatively termed a 'waste management area,' or a 'tank farm.' During its operational life, a number of documented leaks occurred within or near to the WMA. The largest ones were associated with leaks in pipelines and diversion boxes, with the inlets or outlets of the tanks, or with leaks from the tanks themselves. Contaminants associated with these leaks were released to the soil, and mobile {sup 99}Tc has reached the groundwater exceeding drinking water standards. An analysis of the impact of past leaks on groundwater resources has been undertaken as part of the overall process of closing the tank farm. The analysis of leaks was carried out using a suite of scoping cases to evaluate alternative conceptual models for the leak behavior to identify those that are in reasonable agreement with observed concentrations of {sup 99}Tc in groundwater. Comparisons of the scoping cases with available {sup 99}Tc observations indicate the following. - Several of the scoping cases produced results that are inconsistent with observations, indicating that the assumptions in those cases may not be representative of conditions in WMA C. These negative results are valuable in improving the understanding of the migration of {sup 99}Tc from WMA C. - The remaining scoping analyses produced comparable results to each other, and none were obviously superior to others in terms of explaining the {sup 99}Tc observations. When uncertainties in groundwater fluxes were taken into account, these scoping analyses were capable of producing both arrival times and concentrations consistent with observed data for {sup 99}Tc. A representative model was used to implement a forward projection of a suite of contaminants of concern to show how the contamination associated with past leaks can be expected to evolve in the future. This paper presents these results and discusses their implications on groundwater contamination at WMA C. (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗