Search NASA⌕ Search

SEARCH · Search NASA

Results for “LOS ALAMOS”

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.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 181 records · Page 10
All sourcesNASA NTRSDOE OSTI
DOE OSTI2016

2016 Los Alamos National Laboratory Hazardous Waste Minimization Report

Waste minimization and pollution prevention are goals within the operating procedures of Los Alamos National Security, LLC (LANS). The US Department of Energy (DOE), inclusive of the National Nuclear Security Administration (NNSA) and the Office of Environmental Management, and LANS are required to submit an annual hazardous waste minimization report to the New Mexico Environment Department (NMED) in accordance with the Los Alamos National Laboratory (LANL or the Laboratory) Hazardous Waste Facility Permit. The report was prepared pursuant to the requirements of Section 2.9 of the LANL Hazardous Waste Facility Permit. This report describes the hazardous waste minimization program, which is a component of the overall Pollution Prevention (P2) Program, administered by the Environmental Stewardship Group (EPC-ES). This report also supports the waste minimization and P2 goals of the Associate Directorate of Environmental Management (ADEM) organizations that are responsible for implementing remediation activities and describes its programs to incorporate waste reduction practices into remediation activities and procedures. This report includes data for all waste shipped offsite from LANL during fiscal year (FY) 2016 (October 1, 2015 – September 30, 2016). LANS was active during FY2016 in waste minimization and P2 efforts. Multiple projects were funded that specifically related to reduction of hazardous waste. In FY2016, there was no hazardous, mixed-transuranic (MTRU), or mixed low-level (MLLW) remediation waste shipped offsite from the Laboratory. More non-remediation hazardous waste and MLLW was shipped offsite from the Laboratory in FY2016 compared to FY2015. Non-remediation MTRU waste was not shipped offsite during FY2016. These accomplishments and analysis of the waste streams are discussed in much more detail within this report.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2015

Los Alamos National Security, LLC Request for Information from industrial entities that desire to commercialize Laboratory-developed Extremely Low Resource Optical Identifier (ELROI) tech

Los Alamos National Security, LLC (LANS) is the manager and operator of the Los Alamos National Laboratory for the U.S. Department of Energy National Nuclear Security Administration under contract DE-AC52-06NA25396. LANS is a mission-centric Federally Funded Research and Development Center focused on solving the most critical national security challenges through science and engineering for both government and private customers.

47 OTHER INSTRUMENTATION↗
DOE OSTI2012

Nuclear Forensics at Los Alamos National Laboratory

The overview of this presentation is: (1) Introduction to nonproliferation efforts; (2) Scope of activities at Los Alamos National Laboratory; (3) Facilities for radioanalytical work at LANL; (4) Radiochemical characterization capabilities; and (5) Bulk chemical and materials analysis capabilities. Some conclusions are: (1) Analytical chemistry measurements on plutonium and uranium matrices are critical to numerous defense and non-defense programs including safeguards accountancy verification measurements; (2) Los Alamos National Laboratory operates capable actinide analytical chemistry and material science laboratories suitable for nuclear material forensic characterization; (3) Actinide analytical chemistry uses numerous means to validate and independently verify that measurement data quality objectives are met; and (4) Numerous LANL nuclear facilities support the nuclear material handling, preparation, and analysis capabilities necessary to evaluate samples containing nearly any mass of an actinide (attogram to kilogram levels).

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS↗
DOE OSTI2017

Los Alamos works on a biologically realistic computer network

Brain neuroscientists and computer scientists call this field neuromimetic computing—building computers inspired by how the cerebral cortex of the brain works. Its cortical processes rely on billions of small biological “switches,” called neurons. To learn, they store and process information. Using an approach called neural networks, researchers are developing computers that simulate neurons and their interconnections. Then computers can learn about their surroundings, interpret data, and make predictions based on it. In practice, however, researchers attempting to simulate neural processing at anything close to the scale and complexity of the brain’s cortical circuits have been stymied by limitations on computer memory and computational power. All that has changed with the new Trinity supercomputer at Los Alamos, which became fully operational in mid-2017. Trinity has unique capabilities designed for the stockpile stewardship mission, which includes highly complex nuclear simulations that have replaced the testing of nuclear weapons. All this capability means Trinity allows a fundamentally different approach to large-scale cortical simulations, enabling an unprecedented leap in the ability to model neural processing. To test that capability on a limited-scale problem, computer scientists and neuroscientists at Los Alamos created a “sparse prediction machine” that runs on a neural network on Trinity. A sparse prediction machine is designed to work like the brain: researchers expose it to data—in this case, various videos of a car driving down a road—without labeling the data in any way. Then the program sorts through that data frame by frame, focuses on the important information, and develops a prediction about the car’s motion. With Trinity’s power, the Los Alamos team simulates the way a brain handles information in its neurons but uses the fewest neurons at any given moment to explain the information at hand. That’s the “sparse” part, and it makes the brain very efficient—and, hopefully, a computer more efficient, too.

97 MATHEMATICS AND COMPUTING↗
DOE OSTI2015

2013 Los Alamos National Laboratory Hazardous Waste Minimization Report

Waste minimization and pollution prevention are inherent goals within the operating procedures of Los Alamos National Security, LLC (LANS). The US Department of Energy (DOE) and LANS are required to submit an annual hazardous waste minimization report to the New Mexico Environment Department (NMED) in accordance with the Los Alamos National Laboratory (LANL or the Laboratory) Hazardous Waste Facility Permit. The report was prepared pursuant to the requirements of Section 2.9 of the LANL Hazardous Waste Facility Permit. This report describes the hazardous waste minimization program (a component of the overall Waste Minimization/Pollution Prevention [WMin/PP] Program) administered by the Environmental Stewardship Group (ENV-ES). This report also supports the waste minimization and pollution prevention goals of the Environmental Programs Directorate (EP) organizations that are responsible for implementing remediation activities and describes its programs to incorporate waste reduction practices into remediation activities and procedures. LANS was very successful in fiscal year (FY) 2013 (October 1-September 30) in WMin/PP efforts. Staff funded four projects specifically related to reduction of waste with hazardous constituents, and LANS won four national awards for pollution prevention efforts from the National Nuclear Security Administration (NNSA). In FY13, there was no hazardous, mixedtransuranic (MTRU), or mixed low-level (MLLW) remediation waste generated at the Laboratory. More hazardous waste, MTRU waste, and MLLW was generated in FY13 than in FY12, and the majority of the increase was related to MTRU processing or lab cleanouts. These accomplishments and analysis of the waste streams are discussed in much more detail within this report.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2018

Characterizing Natural Attenuation of Cr(VI) in a Chromium Plume at Los Alamos National Laboratory - 18594

Characterization of natural attenuation of hexavalent (Cr(VI)) on aquifer sediments within the Cr plume at Los Alamos National Laboratory has been conducted to (1) refine conceptual and numerical models of chromium fate and transport, (2) evaluate the long-term stability of Cr(III)/Cr(VI) in the complex groundwater system along flow paths from the source to the regional aquifer, and (3) evaluate and develop options for successful remediation. The naturally high chromium abundance in aquifer sediments at Los Alamos pose an unique challenge for characterization of chromium reduction, making conventional approaches such as uptake tests and advanced spectroscopic measurements ineffective in identifying relatively small amounts of anthropogenic Cr(VI) in the sediments. To address this challenge and as complimentary to these conventional methods, sequential leaching tests were conducted on core hole sediments obtained from sonic drilled cores taken from both contaminated and non-contaminated horizons among two mineralogically distinct formations (Puye formation and Miocene Pumiceous Unit) within the Cr plume. A series of three and coherent sequential leaching steps were conducted: 1) an alkaline leach to determine the amount of Cr(VI) sorbed on the sediments. 2) a weak acid leach (using 0.01 M and 0.1 M HNO{sub 3}) to determine the amount of anthropogenic chromium (Cr(III) and Cr(VI)) on aquifer sediment surfaces, and 3) a strong acid leach (using 2 M HNO{sub 3}) to characterize the amount of releasable Cr(III) from aquifer minerals. Additionally we tested the efficiency and detection limit of sequential leaching on bentonite, which consists mainly of smectite, used in drill muds and laboratory-grade biotite spiked with known concentrations of Cr(VI). Smectite and biotite are two phases considered to be potentially important host minerals in aquifer sediments within the plume. Thus, by comparing contaminated and uncontaminated sediment leachate results of chromium and other major and trace elements, the signature and quantity of anthropogenic Cr(VI) can be derived. Our results from the weak acid leaching test indicate that the method detection limit for Cr 'uptake' was about 1 μg/g for biotite and about 0.5 μg/g for bentonite. Our results also indicate that all samples taken from known contaminated horizons in comparison to non-contaminated ones within the Puye formation showed no statistical difference in the amount of Cr leached indicative of its insignificant Cr(VI) attenuation capacity. The amount of excess Cr leached from the magnetic fraction of the contaminated Miocene Pumiceous samples was about 2 μg/g of sediment. Considering that the magnetic fraction was about 11% by mass of the bulk sample, the excess amount of Cr leached from the bulk material would be about 0.2 μg/g of sediment, suggesting the potential for some Cr(VI) attenuation capacity in the Miocene pumice unit. (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2012

2012 Los Alamos National Laboratory Hazardous Waste Minimization Report

Waste minimization and pollution prevention are inherent goals within all the operating procedures of Los Alamos National Security, LLC (LANS). The US Department of Energy (DOE) and LANS are required to submit an annual hazardous waste minimization report to the New Mexico Environment Department (NMED) in accordance with the Los Alamos National Laboratory (LANL or the Laboratory) Hazardous Waste Facility Permit. The report was prepared pursuant to the requirements of Section 2.9 of the LANL Hazardous Waste Facility Permit, which was issued in November 2010. This report describes the hazardous waste minimization program (a component of the overall Waste Minimization/Pollution Prevention [WMin/PP] Program) administered by the Environmental Stewardship Group (ENV-ES). This report also supports the waste minimization and pollution prevention goals of the Environmental Programs Directorate (EP) organizations that are responsible for implementing remediation activities and describes its programs to incorporate waste reduction practices into remediation activities and procedures.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2013

Comprehensive Air Monitoring Report for Measurements during the Las Conchas Fire at Los Alamos National Laboratory

During the Las Conchas Fire, ambient air was monitored for radionuclides and particulate matter at and around Los Alamos National Laboratory (the Laboratory). During the fire, a variety of samplers were deployed, including the radiological air sampling network, high-volume air samplers, Tapered Element Oscillating Microbalances (PM 2.5 and PM 10), and environmental continuous air monitors. These different types of samplers provided real time, more in-depth retrospective information on air quality. In total, roughly 220 air samples were collected, and the results were consistent with other regional fires. Laboratory officials and Los Alamos County used real-time data to make public health risk determinations according to the Air Quality Index. Particulate levels were elevated and exceeded the National Ambient Air Quality Standard during the fire because of smoke. Elevated levels of naturally occurring radon decay products, consistent with all forest fires, were detected. Gross-alpha measurements had an average of range of 400 aCi/m 3 to 13,400 aCi/m 3 . Measurements of gross beta during the fire had a range of 34,000 aCi/m 3 to 74,000 aCi/m 3 . These values are not statistically different from national or regional averages.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2018

Updated Erosion Analysis for Material Disposal Area G, Technical Area 54, Los Alamos National Laboratory

Material Disposal Area G (MDA G), located within Technical Area 54 (TA-54) is used to dispose radioactive waste at Los Alamos National Laboratory (LANL). Technical Area 54 is located on LANL property on the Pajarito Plateau between the communities of Los Alamos and White Rock (Figure 1-1). The MDA G disposal facility is currently in operation (Figure 1-2). Waste is generally placed in large rectangular pits, numbered 1-39, and cylindrical shafts within MDA G.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2015

Notification of Class 1 Permit Modification to Attachment B, Part A Application for the Los Alamos National Laboratory Hazardous Waste Facility Permit, EPA ID # NM0890010515

This document contains a notification for a Class 1 Permit Modification to modify the Los Alamos National Laboratory (LANL) Hazardous Waste Facility Permit (Permit) issued to the Department of Energy and the Los Alamos National Security, LLC, collectively known as the Permittees, in November 2010. All changes have been made to Attachment B, Part A Application, and a full, updated form, Revision 10.0, is enclosed. The modification updates the facility contact and address information, and the process codes and design capacity section for Technical Area (TA) 14; TA-16; TA-39; TA-54 West; TA-54, Area G; and TA-55 within the Attachment B, Part A Application. The process codes and design capacity section for TA-14, TA-16, and TA-39 was updated to incorporate a statement that the Permittees have notified of the intent to close units at these locations. The process design capacity for TA-54, Area G has been updated from 3,664,150 gallons to 4,346,590 gallons to account for the TA-54, Area G Pad 11 container storage unit that was added when the Permit was issued in 2010 but at the time did not previously store hazardous waste. The number of units at TA-54, Area G was also updated to 9 units to include this new unit. The process design capacity for TA-55 has also been updated from 178,500 gallons to 207,600 gallons to incorporate the addition of the TA-55-185 container storage unit that was also added when the Permit was issued. The number of storage units at TA-55 was updated to 7 to include the unit. The process design capacity at TA-54 West was changed to 11,660 gallons to correct a typographical error in previous versions of the form.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2015

Request for a Class 1 Permit Modification to the Los Alamos National Laboratory (LANL) Hazardous Waste Facility Permit, EPA ID No. NM0890010515

The following submittal has been prepared by the U.S. Department of Energy and Los Alamos National Security, LLC (collectively the Permittees) to request a modification to the November 2010 Los Alamos National Laboratory (LANL) Hazardous Waste Facility Permit (Permit). This modification has been prepared as a Class 1 permit modification requiring prior approval by the New Mexico Environment Department-Hazardous Waste Bureau (NMEDHWB) (also known as a Class 1* permit modification) as described in the New Mexico Administrative Code, Title 20, Chapter 4, Part 1 (20.4.1.900 NMAC) [incorporating Code of Federal Regulations (CFR), Title 40 §§ 270.42 (a) ]. LANL’s Environmental Protection Agency (EPA) identification number is EPA ID No. NM0890010515. The permit modification includes revisions to Table K-1, SWMUs (Solid Waste Management Units) and AOCs (Areas of Concern) Requiring Corrective Action, which is included in Permit Attachment K, Listings of SWMUs and AOCs. The following summary describes the proposed modification and rationale behind the modification and contains a revised version of the relevant page of Table K-1 incorporating the modification (Attachment 1). The Permittees request that the revised Table K-1 be included in the Permit by the NMED-HWB upon approval of this permit modification request.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2021

Woolwich, Bruceton, Los Alamos: Munroe Jets and the Trinity Gadget

Prewar work on the hydrodynamics of explosives and U.S./UK scientific cooperation well beyond Los Alamos contributed to the design of the explosive lenses for the Trinity gadget. Researchers were deliberately brought together and encouraged to share ideas by the leaders of the wartime laboratory. James Tuck, one of the British mission scientists, made particularly interesting contributions in this area, but this paper is not a claim of British or any other individual parentage. Rather, it highlights the importance of collaboration at Los Alamos and more widely.

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEF↗
DOE OSTI2020

Robust Method to Identify Groundwater Affected By Redox Conditions at Los Alamos National Laboratory Legacy Cleanup Site - 20497

To facilitate the mission of the Department of Energy's (DoE's) Environmental Management Program at Los Alamos National Laboratory (LANL), a significant number of groundwater monitoring wells with depths ranging from 152-396 meter were completed for characterization and monitoring. Groundwater at Los Alamos tends to be oxygen saturated with very low concentrations of organic matter. Drilling fluids can introduce residual carbon causing an increase in microbial activity and local reducing conditions around the well, potentially impacting representativeness of groundwater data quality for redox sensitive constituents. We assert that the redox state of the wells can robustly be identified by aqueous solution concentrations of iron and manganese. An automated review process has been built into a computer-based data management system enabling an efficient screening process for identifying reducing conditions that are not caught using standard data-validation protocol, and ensures that important data quality issues are thoroughly identified and addressed in an efficient and timely manner. (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2013

Verification of 2-D Detonation Shock Dynamics in conjunction with Los Alamos Lagrangian hydrocode

As the latest version of the fast-tube Detonation Shock Dynamics (DSD) solver is linked with the Los Alamos Lagrangian hydrocode, verification problems from a 2006 DSD report (LA-14277) have been duplicated with some of the verification criteria changed to more quantitative ones. The observed error convergence is as good as or better than reported in, quite possibly due to the careful treatment of floating point numbers to ensure that their precision level is maintained throughout the code. This report duplicates the three sample verification problems in LA-14277 using the Los Alamos ASC Lagrangian hydrocode (FLAG), official release of 3.2 Alpha6 with a few modifications. This version of FLAG is linked with the latest fast-tube Detonation Shock Dynamics (DSD) version beta 2 solver released in 2011 as part of the LanlDSD software product. New verification criteria are used for the arcwave problem where two specific locations are chosen for burn arrival time comparison. For this report FLAG's internal driver code prepares the distance function ({Psi}) and material ID fields from its hydro setup, instead of the stand-alone driver that is being utilized by the other LANL hydrocodes currently interfaced to LanlDSD. As it is implemented in version 3.2 Alpha6, the {Psi} and material ID fields and other parameters are passed from FLAG to the DSD solver directly, and the burn table is directly passed back to FLAG as part of the calling arguments. The burn-front arrival time 'exact' solutions, mentioned in the sequel for the rate-stick and 'arc-wave' problems, are computed using a pair of special-purpose Fortran codes provided by Aslam. In each case an ansatz for the form of the solution is made in which the radius from the detonator center point is used as the independent space coordinate. This leads to a simplified, problem-specific, 1D form of the governing equation. This equation is solved using 2nd-order spatial differencing and the forward Euler method on a very fine temporal and geometric mesh. The boundary conditions are handled exactly at the correct location, with second order accuracy. Care has been taken to ensure that this solution is fully converged.

36 MATERIALS SCIENCE↗
DOE OSTI2016

Additive manufacturing capabilities applied to inertial confinement confusion at Los Alamos National Laboratory

We describe the use at Los Alamos National Laboratory of additive manufacturing (AM) for a variety of jigs and coating, assembly, and radiography fixtures. Additive manufacturing has also been used to produce shipping containers of complex design that would be too costly to have fabricated using traditional techniques. The current goal for AM use in target fabrication is to increase target accuracy and rigidity. This has been realized by implementing AM into target stalk fabrication, allowing increased complexity to address target strength and the addition of features for alignment at facilities. As a result, we will describe the fabrication of these components and our plans to utilize AM in the future.

70 PLASMA PHYSICS AND FUSION TECHNOLOGY↗
DOE OSTI2012

A human factors approach towards the design of a new glovebox glove for Los Alamos National Laboratory

Present day glovebox gloves at Los Alamos National Laboratory (LANL) are underdeveloped and ergonomically inaccurate. This problem results in numerous sprain and strain injuries every year for employees who perform glovebox work. In addition to injuries, using the current glovebox glove design also contributes to breaches and contamination. The current glove used today at LANL has several problems: (1) The length of the fingers is incorrect, (2) the web spacing between the fingers is nonexistent, (3) the angles between each digit on the finger are incorrect, (4) the thumb is placed inaccurately, and (5) the length of the hand is incorrect.

42 ENGINEERING↗