Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “NNSS”

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 271 records · Page 15
All sourcesNASA NTRSDOE OSTI
DOE OSTI2016

Nevada National Security Site Waste Acceptance Criteria (NNSS/WAC)

This document establishes the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Field Office (NNSA/NFO), Nevada National Security Site Waste Acceptance Criteria (NNSSWAC). The NNSSWAC provides the requirements, terms, and conditions under which the Nevada National Security Site (NNSS) will accept the following: DOE low-level radioactive waste (LLW); DOE mixed low-level waste (MLLW); DOE classified waste/matter; U.S. Department of Defense (DOD) classified waste/matter The LLW and MLLW listed above may also be classified waste. Non-radioactive classified waste is accepted for disposal and shall meet the waste acceptance criteria for radioactive waste as specified in this document. Classified matter may be shipped to the NNSS for permanent burial as classified waste in accordance with the provisions in Section 3.1.18 of this document.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2018

Nevada National Security Site Environmental Report 2017

The National Nuclear Security Administration Nevada Fields Office (NNSA/NFO) directs the facility management and program operations at the Nevada National Security Site (NNSS) North Las Vegas Facility (NLVF), and Remote Sensing Laboratory–Nellis (RSL-Nellis) in Nevada and directs selected operations at four sites outside of Nevada that include RSL-Andrews in Maryland, Livermore Operations in California, Los Alamos Operations in New Mexico, and the Special Technologies Laboratory in California. This report summarizes data and the compliance status of the NNSA/NFO environmental protection and monitoring programs for calendar year 2017 at the NNSS and at its two support facilities, the NLVF and RSL-Nellis. This report also addresses environmental restoration (ER) projects conducted by the Environmental Management Nevada Program Office at the Tonopah Test Range (TTR).

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2018

Nevada National Security Site Environmental Report Summary 2017

The National Nuclear Security Administration Nevada Field Office (NNSA/NFO) prepares the Nevada National Security Site Environmental Report (NNSSER) each year to provide the public an understanding of the environmental monitoring and compliance activities that are conducted on the Nevada National Security Site (NNSS) to protect the public and the environment from radiation hazards and from potential nonradiological impacts. It is a comprehensive report of environmental activities performed at the NNSS and offsite facilities over the previous calendar year. This Summary provides an abbreviated and more readable version of the full NNSSER.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2018

Ecological Monitoring and Compliance Program 2017 Report

The Ecological Monitoring and Compliance Program (EMAC), funded through the U.S. Department of Energy, National Nuclear Security Administration Nevada Field Office (NNSA/NFO), monitors the ecosystem of the Nevada National Security Site (NNSS) and ensures compliance with laws and regulations pertaining to NNSS biota. This report summarizes the program’s activities conducted by National Security Technologies, LLC (NSTec) and Mission Support and Test Services, LLC (MSTS), during calendar year 2017. Program activities included (a) biological surveys at proposed activity sites, (b) desert tortoise compliance, (c) ecosystem monitoring, (d) sensitive plant species monitoring, (e) sensitive and protected/regulated animal monitoring, and (f) habitat restoration monitoring. During 2017, all applicable laws, regulations, and most permit requirements were met, enabling EMAC to achieve its intended goals and objectives.

60 APPLIED LIFE SCIENCES↗
DOE OSTI2016

2015 Annual Summary Report for the Area 3 and Area 5 RWMs

This annual summary report presents results and conclusions of the Fiscal Year (FY) 2015 review to assess the adequacy of the performance assessments (PAs) and composite analyses (CAs) in support of the Disposal Authorization Statements for the Area 3 and Area 5 Radioactive Waste Management Sites at the Nevada National Security Site (NNSS). The report presents results and conclusions of the FY 2015 review and determines the adequacy of the PAs and CAs. Operational factors (e.g., waste forms and containers, facility design, and waste receipts), closure plans, monitoring results, and research and development (R&D) activities were reviewed to determine the adequacy of the PAs. Likewise, the environmental restoration activities at the NNSS relevant to the sources of residual radioactive material that are considered in the CAs, the land-use planning, and the results of the environmental monitoring and R&D activities were reviewed to determine the adequacy of the CAs.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2016

Special Analysis for the Disposal of the Portsmouth Uranium Fluoride Solids Waste Stream at the Area 5 Radioactive Waste Management Site, Nevada National Security Site, Nye County, Nevada

This special analysis (SA) evaluates whether the Portsmouth Gaseous Diffusion Plant (PORT) Uranium (U) Fluoride Solids waste stream is suitable for disposal by shallow land burial at the Area 5 Radioactive Waste Management Site on the Nevada National Security Site (NNSS). The PORT U Fluoride Solids waste stream consists of highly enriched uranium solids. The PORT U Fluoride Solids waste stream requires an SA to resolve whether it is acceptable to dispose of technetium-99 ( 99 Tc), uranium-234 ( 234 U), and thorium-230 ( 230 Th) with activity concentrations exceeding the NNSS Waste Acceptance Criteria Action Levels.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2019

Ship Task NEL19021 Waste Transportation Surveillance: ASMT 2019-0250

The scope of this surveillance was to observe waste transportation and associated preparation activities to verify compliance with requirements identified in Nevada National Security Site (NNSS) Waste Acceptance Criteria (WAC) Revision 325 16 00. Programatic controls were reviewed as a whole, and shipment NEL19021, from the Materials and Fuels Complex (MFC) to NNSS, was witnessed. Two conditions were self-identified by WGS personnel and entered into the condition reporting system. No other conditions or examples of noncompliance were identified during the course of surveillance activities.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2016

Special Analysis for the Disposal of the Oak Ridge National Laboratory Activated Metal Waste Stream at the Area 5 Radioactive Waste Management Site, Nevada National Security Site, Nye County, Nevada

This special analysis (SA) evaluates whether the Oak Ridge National Laboratory (ORNL) Activated Metal waste stream is suitable for disposal by shallow land burial at the Area 5 Radioactive Waste Management Site (RWMS) on the Nevada National Security Site (NNSS). The ORNL Activated Metal waste stream consists of metal irradiated in ORNL research reactors. The ORNL Activated Metal waste stream requires an SA to resolve two unreviewed disposal questions (UDQs). The first UDQ addresses whether it is acceptable to dispose 12 radionuclides with activity concentrations that exceed the NNSS Waste Acceptance Criteria (WAC) Action Level. The second UDQ evaluates the acceptability of disposing of 23 long-lived radionuclides without WAC action levels. Long-lived radionuclides without action levels are radionuclides not evaluated in the performance assessment.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2016

Special Analysis for the Disposal of the Idaho National Laboratory Idaho Chemical Processing Plant Low-Level Waste Stream at the Area 5 Radioactive Waste Management Site, Nevada National Security Site, Nye County, Nevada

This special analysis (SA) evaluates whether the Idaho National Laboratory (INL) Idaho Chemical Processing Plant (ICPP) Low-Level waste stream is suitable for disposal by shallow land burial at the Area 5 Radioactive Waste Management Site on the Nevada National Security Site (NNSS). The INL ICPP Low-Level waste stream consists of debris and solidified liquids. The INL ICPP Low-Level waste stream requires an SA to resolve two unreviewed disposal questions (UDQs). The first UDQ addresses whether it is acceptable to dispose of radium-226 (226Ra) at an activity concentration that exceeds the NNSS Waste Acceptance Criteria (WAC) Action Level. The second UDQ evaluates the acceptability of disposing of five long-lived radionuclides without WAC action levels. Long-lived radionuclides without action levels are radionuclides not evaluated in the performance assessment.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2019

Model Evaluation Report for Corrective Action Unit 97: Yucca Flat/Climax Mine, Nevada National Security Site, Nye County, Nevada (Revision 1)

This Model Evaluation Report (MER) has been prepared for Corrective Action Unit (CAU) 97, Yucca Flat/Climax Mine (YF/CM), Nevada National Security Site (NNSS), Nevada. The YF/CM CAU is located in the northeastern portion of the NNSS and comprises 720 corrective action sites. A total of 747 underground nuclear detonations took place within this CAU between 1957 and 1992 and resulted in the release of radionuclides (RNs) in the subsurface in the vicinity of the detonation cavities.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2019

Ecological Monitoring and Compliance Program (2018 Report)

The Ecological Monitoring and Compliance Program (EMAC), funded through the U.S. Department of Energy, National Nuclear Security Administration Nevada Field Office, monitors the ecosystem of the Nevada National Security Site (NNSS) and ensures compliance with laws and regulations pertaining to NNSS biota. This report summarizes the program’s activities conducted by Mission Support and Test Services, LLC, during calendar year 2018. Program activities included (a) biological surveys at proposed activity sites, (b) desert tortoise compliance, (c) ecosystem monitoring, (d) sensitive plant species monitoring, (e) sensitive and protected/regulated animal monitoring, and (f) habitat restoration monitoring. During 2018, most applicable laws, regulations, and permit requirements were met, enabling EMAC to achieve its intended goals and objectives.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2016

Special Analysis for the Disposal of the Idaho National Laboratory Regulated Asbestos Waste Stream at the Area 5 Radioactive Waste Management Site, Nevada National Security Site, Nye County, Nevada

This special analysis (SA) evaluates whether the Idaho National Laboratory (INL) Regulated Asbestos waste stream is suitable for disposal by shallow land burial at the Area 5 Radioactive Waste Management Site on the Nevada National Security Site (NNSS). The INL Regulated Asbestos waste stream consists of asbestos and asbestos-contaminated debris. The INL Regulated Asbestos waste stream requires an SA to resolve whether it is acceptable to dispose of tritium ( 3 H) at activity concentrations exceeding the NNSS Waste Acceptance Criteria Action Level.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2016

Special Analysis for the Disposal of the Idaho National Laboratory Unirradiated Light Water Breeder Reactor UO 2 /ThO 2 and UO 2 /ZrO 2 Rods and Pellets Waste Stream at the Area 5 Radioactive Waste Management Site, Nevada National Security Site, Nye County, Nevada

This special analysis (SA) evaluates whether the Idaho National Laboratory (INL) Unirradiated Light Water Breeder Reactor (LWBR) UO 2 /ThO 2 and UO 2 /ZrO 2 Rods and Pellets waste stream is suitable for disposal by shallow land burial at the Area 5 Radioactive Waste Management Site on the Nevada National Security Site (NNSS). The INL Unirradiated LWBR Rods and Pellets waste stream consists of unirradiated uranium-233 ( 233 U) fuel rods. The INL Unirradiated LWBR Rods and Pellets waste stream requires an SA to resolve whether it is acceptable to dispose of 233 U, 232 U, 234 U, thorium-229 ( 229 Th), and 230 Th at activity concentrations exceeding their NNSS Waste Acceptance Criteria Action Levels.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2016

Special Analysis for the Disposal of the Idaho National Laboratory Contact Handled Sealed Sources Waste Stream at the Area 5 Radioactive Waste Management Site, Nevada National Security Site, Nye County, Nevada

This special analysis (SA) evaluates whether the Idaho National Laboratory (INL) Contact Handled Sealed Sources waste stream is suitable for disposal by shallow land burial at the Area 5 Radioactive Waste Management Site (RWMS) on the Nevada National Security Site (NNSS). The INL Contact Handled Sealed Sources waste stream consists of sealed radioactive sources. The INL Contact Handled Sealed Sources waste stream requires an SA to determine whether the Area 5 RWMS can accept radium-226 ( 226 Ra), tritium ( 3 H), and europium-152 ( 152 Eu) at activity concentrations exceeding the NNSS Waste Acceptance Criteria Action Levels and whether to accept four long-lived radionuclides (curium-247 [ 247 Cm], 250 Cm, californium-249 [ 249 Cf], 251 Cf) without action levels.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2020

Interpretation of Mineralogical Diagenesis for Assessment of Radionuclide Transport at Pahute Mesa, Nevada National Security Site

Pahute Mesa (PM) in southern Nevada was one of the four principal underground nuclear testing areas at the Nevada National Security Site (NNSS), known as the “Nevada Test Site” until 2010 (Figure 1). Eighty-two underground nuclear tests were conducted at PM in northwestern corner of NNSS (USDOE, 2015). The PM area of underground nuclear testing is located near the center of the Pahute Mesa and Oasis Valley (PM-OV) groundwater basin, which discharges to the southwest near Oasis Valley (OV) north of Beatty, Nevada (Fenelon et al. 2016; Jackson et al., 2020). Most of the PM tests were located at depths near or below the regional water table and, therefore, present potential sources of groundwater contamination from release of test-related radionuclides.

58 GEOSCIENCES↗
DOE OSTI2020

Ecological Monitoring and Compliance Program 2019 Report

The Ecological Monitoring and Compliance Program (EMAC), funded through the U.S. Department of Energy, National Nuclear Security Administration Nevada Field Office (NNSA/NFO), monitors the ecosystem of the Nevada National Security Site (NNSS) and ensures compliance with laws and regulations pertaining to NNSS biota. This report summarizes the program’s activities conducted by Mission Support and Test Services, LLC (MSTS), during calendar year 2019. Program activities included (a) biological surveys at proposed activity sites, (b) desert tortoise compliance, (c) ecosystem monitoring, (d) sensitive and protected/regulated plant monitoring, (e) sensitive and protected/regulated animal monitoring, and (f) habitat restoration monitoring. During 2019, all applicable laws, regulations, and permit requirements were met, enabling EMAC to achieve its intended goals and objectives.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2020

Nevada National Security Site 2019 Waste Management Monitoring Report Area 3 and Area 5 Radioactive Waste Management Sites

Environmental monitoring data are collected at and around the Area 3 and Area 5 Radioactive Waste Management Sites (RWMSs) within the Nevada National Security Site (NNSS). This report summarizes the 2019 environmental data to provide an overall evaluation of RWMS performance and to support environmental compliance and performance assessment (PA) activities. Some of these data (e.g., radiation exposure, air, and groundwater) are presented in other reports (Mission Support and Test Services, LLC 2019, 2020a, 2020b). Direct radiation monitoring data indicate exposure levels at the Area 3 and Area 5 RWMSs are within the range of background levels measured at the NNSS. Slightly elevated exposure levels outside the Area 3 RWMS are attributed to nearby historical aboveground nuclear weapons tests. Air monitoring data at the Area 3 and Area 5 RWMSs show that tritium concentrations in water vapor and americium and plutonium concentrations in air particles are below Derived Concentration Standards for these radionuclides. Groundwater monitoring data indicate the groundwater in the uppermost aquifer beneath the Area 5 RWMS is not impacted by RWMS operations. Results of groundwater analysis from wells around the Area 5 RWMS are below established investigation levels. Leachate samples collected from the leachate collection systems at the Area 5 mixed low-level waste disposal unit are below established contaminant regulatory limits. During 2019, precipitation at the Area 3 RWMS was 77 percent above average, and precipitation at the Area 5 RWMS was 69 percent above average. Water balance measurements indicate that evapotranspiration from the vegetated weighing lysimeter at the Area 5 RWMS dries the soil and prevents downward percolation of precipitation more effectively than evaporation as measured from the bare-soil weighing lysimeter. Vadose zone monitoring in the Area 3 and Area 5 RWMS soil covers shows no evidence of precipitation percolating through the covers to the waste. Moisture from precipitation did not percolate below 120 centimeters (3.9 feet [ft]) in the vegetated final cover on the U-3ax/bl disposal unit at the Area 3 RWMS during 2019. There was no drainage through 2.4 meters (8 ft) of soil as indicated from the Area 3 drainage lysimeters that received only natural precipitation. At the Area 3 RWMS, which received three times the natural precipitation, 57 percent of the applied precipitation and irrigation drained from the bare-soil drainage lysimeter. All 2019 monitoring data indicate that the Area 3 and Area 5 RWMSs are performing within expectations of the model and parameter assumptions for the facilities’ PAs.

2019↗
DOE OSTI2020

Applicability of Public Dose Limits to Individuals on the Nevada National Security Site

Historically all persons working on the Nevada National Security Site (NNSS) were considered subject to worker dose limits when calculations of potential dose from the air pathway were conducted to demonstrate compliance with Title 42 United States Code (USC) Chapter 85, “The Clean Air Act,” and Title 40 Code of Federal Regulations (CFR) Part 61, Subpart H, “National Emission Standards for Hazardous Air Pollutants (NESHAP).” Calculations were also conducted for the all-pathways potential dose to demonstrate compliance with U.S. Department of Energy (DOE) Order DOE O 458.1 Chg. 3, “Radiation Protection of the Public and the Environment.” The need to evaluate environmental air sampling locations and past regulator questions about the existence of persons potentially subject to public dose limits being on the NNSS drove this assessment (letter from EPA [U.S. Environmental Protection Agency] Region 9 to DOE/Nevada Operations Office, dated September 3, 1999). This assessment also supports determining those persons subject to public dose limits from the all pathways perspective. A person that is a member of the public is subject to public dose limits.

61 RADIATION PROTECTION AND DOSIMETRY↗