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Control of indoor radon and radon progeny concentrations

Description: There are three general categories of techniques for the control of radon and radon progeny concentrations in indoor air - restriction of radon entry, reduction of indoor radon concentrations by ventilation or air cleaning, and removal of airborne radon progeny. The predominant radon entry process in most residences appears to be pressure driven flow of soil gas through cracks or other openings in the basement, slab, or subfloor. Sealing these openings or ventilation of the subslab or subfloor … more
Date: May 1, 1985
Creator: Sextro, R.G.
Partner: UNT Libraries Government Documents Department
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Investigation of pressure transients in nuclear filtration systems: construction details of a large shock tube

Description: This report documents the construction of a 0.914-m (36-in.)-dia. shock tube on the New Mexico State University caompus. Highly variable low-grade explosions can be simulated with the shock tube. We plan to investigate the response of nuclear facility ventilation system components to low-grade explosions. Components of particular interest are high-capacity, high efficiency paticulate air (HEPA) filters. Shock tube construction details, operating principles, firing sequence, and preliminary resu… more
Date: April 1, 1980
Creator: Smith, P. R. & Gregory, W. S.
Partner: UNT Libraries Government Documents Department
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Recovery of plutonium from HEPA filters by Ce(IV): promoted dissolution of PuO/sub 2/ and recycle of the cerium promoter

Description: Studies carried out in this investigation included (1) electrolytic production of Ce(IV) from Ce(III), (2) leaching of refractory PuO/sub 2/ from HEPA filters with maintenance of Ce(IV) by anodic oxidation during leaching, and (3) evaluation of methods for contacting the HEPA solids with the leaching solution and for separating the solid residue from the leaching liquor. Anodic oxidation of Ce(III) was accomplished with an electric current efficiency of about 85% at current densities of 0.04 to… more
Date: May 1, 1980
Creator: Scheitlin, F.M. & Bond, W.D.
Partner: UNT Libraries Government Documents Department
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Fluidized bed incineration of transuranic contaminated waste

Description: A 9 kg/h pilot scale fluidized bed incinerator is now being used for burning various types of radioactive waste at Rocky Flats Plant. General solid combustible waste containing halogenated materials is burned in a fluidized bed of sodium carbonate for in stu neutralization of thermally generated acidic gases. A variety of other production related materials has been burned in the incinerator, including ion exchange resin, tributyl phosphate solutions, and air filters. Successful operation of the… more
Date: January 1, 1976
Creator: Ziegler, D. L. & Johnson, A. J.
Partner: UNT Libraries Government Documents Department
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Effect of particle-size variation on filtration efficiency measured by the HEPA-filter quality-assurance test

Description: A theoretical model has been used to calculate the filtration efficiency that would be indicated by the photometer for challenge aerosols of different size distributions and HEPA filters with different efficiencies as functions of particle size. The model compares the calculated overall efficiency indicated by the photometer with efficiencies calculated with respect to particle number and mass. This calculation assumes three aerosol distributions previously measured at the Filter Test Facilitie… more
Date: January 1, 1982
Creator: Tillery, M.I.; Salzman, G.C. & Ettinger, H.J.
Partner: UNT Libraries Government Documents Department
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Status report: waste incineration and fixation for Waste Management, Production, and Reprocessing Division of the Department of Energy (July--December 1976)

Description: Fluidized bed incineration and waste fixation processes are being used to process the types of wastes expected from nuclear fuel reprocessing and production plants. Test incineration runs have been made on two types of wastes: high efficiency particulate air (HEPA) filters and tributyl phosphate-solvent solutions. Laboratory-scale vitrification equipment was used to produce glass pellets from incinerator ash and blends of other expected waste streams. Computer modeling gave an expected product … more
Date: November 25, 1977
Creator: Ziegler, D. L.; White, J. W.; Johnson, A. J.; Fong, L. Q.; Teter, A. R. & Chung, S. F.
Partner: UNT Libraries Government Documents Department
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Hazards Control Department annual technology review, 1985

Description: The report highlights research performed from October 1984 to September 1985. The major sections cover the areas of industrial hygiene, aerosol physics, health physics, fire science, dosimetry, criticality safety, and safety analysis. Separate abstracts have been prepared for individual papers. (ACR)
Date: June 1, 1986
Creator: Griffith, R.V. & Anderson, K.J. (eds.)
Partner: UNT Libraries Government Documents Department
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Synthesis gas demonstration plant program, Phase I. Trade-off studies report IV, air quality control alternatives

Description: For particulate removal systems four alternate methods were considered: wet venturi scrubbers, combination of multicyclonic mechanical dust collectors (MDC) and wet venturi scrubbers; electrostatic precipitators (ESP), and baghouses. For sulfur dioxide (SO/sub 2/) removal eleven alternate systems were considered: magnesia slurry scrubbing, sodium sulfite scrubbing (Wellman-Lord), ammonia (clear liquor), citrate, phosphate (Aqua-Claus), steam stripping, aqueous carbonate, ammonia (semi-dry), car… more
Date: September 1, 1978
Partner: UNT Libraries Government Documents Department
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Quality engineering and control. Semiannual progress report, November-December 1978, January-April 1979. [PCB]

Description: This document reports the following: atomic absorption spectroscopy of Ir in Pu-Ir alloys; removal of Pu from soil; surface microanalysis using elemental x-ray mapping; microscopic scanning of Ga in Pu; microscopy of defects in Pu; emission spectroscopy of Ir and Y in PuO/sub 2/; gas chromatograhy of PCB's in transformer oils and water; liquid chromatography of chlorophenoxy acid herbicides in water; solution analysis by spark source mass spectrometry; a portable gas sampling system; flamm… more
Date: August 2, 1980
Creator: Carpenter, R. L.
Partner: UNT Libraries Government Documents Department
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Environmental monitoring at the Lawrence Livermore National Laboratory. 1981 annual report

Description: This report gives methods and results of the 1981 radiation monitoring program at LLL for both radioactive and non-radioactive contamination from gaseous and liquid effluents. Off-site monitoring includes various radionuclides but especially tritium in the ecosystems. (PSB)
Date: March 11, 1982
Creator: Auyong, M.; Griggs, K.S. & Buddemeier, R.W.
Partner: UNT Libraries Government Documents Department
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Reduced waste generation, FY 1986

Description: The United States Department of Energy is committed to the principles of minimizing the quantity and transuranic content of its transuranium (TRU) waste being generated at its nuclear facilities. The reasons are to reduce costs associated with waste handling and disposal, and also to reduce radiation exposure to workers and risk for radionuclide release to man and the environment. The purpose of this document is to provide the USDOE with a plan of research and development tasks for waste minimi… more
Date: February 1, 1986
Partner: UNT Libraries Government Documents Department
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In-place HEPA (high efficiency, particulate air) filter testing at Hanford: Operating experiences, calibrations, and lessons learned

Description: High Efficiency, Particulate Air (HEPA) Filters provide a minimum of 99.97% removal efficiency for particles greater than or equal to .3 microns in diameter. Each HEPA filter installation at Hanford is, at specified intervals, functionally tested for leaks. The test procedure involves a dioctylphthalate (DOP) smoke generator and a calibrated airborne particle detector. The DOP generator produces smoke of a known quantitative particle size distribution upstream of the filter. The airborne partic… more
Date: October 1, 1989
Creator: Flores, D.S. & Decelis, D.G.
Partner: UNT Libraries Government Documents Department
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Electric air filtration: theory, laboratory studies, hardware development, and field evaluations

Description: We summarize the results of a seven-year research project for the US Department of Energy (DOE) to develop electric air filters that extend the service life of high-efficiency particulate air (HEPA) filters used in the nuclear industry. This project was unique to Lawrence Livermore National Laboratory (LLNL), and it entailed comprehensive theory, laboratory studies, and hardware development. We present our work in three major areas: (1) theory of and instrumentation for filter test methods, (2)… more
Date: September 1, 1983
Creator: Bergman, W.; Biermann, A.; Kuhl, W.; Lum, B.; Bogdanoff, A.; Hebard, H. et al.
Partner: UNT Libraries Government Documents Department
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Technology of off-gas treatment for liquid-fed ceramic melters

Description: The technology for treating off gas from liquid-fed ceramic melters (LFCMs) has been under development at the Pacific Northwest Laboratory since 1977. This report presents the off-gas technology as developed at PNL and by others to establish a benchmark of development and to identify technical issues. Tests conducted on simulated (nonradioactive) wastes have provided data that allow estimation of melter off-gas composition for a given waste. Mechanisms controlling volatilization of radionuclide… more
Date: May 1, 1985
Creator: Scott, P. A.; Goles, R. W. & Peters, R. D.
Partner: UNT Libraries Government Documents Department
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In-service filter testing

Description: This report contains the observations, test results, and conclusions of three separate in-service tests beginning in November 1979 and concluding in September 1983. The in-service tests described in this report produced encouraging results on filters constructed with fiberglass medium containing 5% Nomex and separators of aluminum foil coated with a thin film of vinyl-epoxy polymer. Filters containing medium with Kevlar fiber additives demonstrated they merited further evaluation. Other types o… more
Date: April 29, 1985
Creator: Terada, K.; Woodard, R.W. & Jensen, R.T.
Partner: UNT Libraries Government Documents Department
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Decommissioning of TA-21-153, a /sup 227/Ac contaminated old filter building

Description: An exhaust air filter building contaminated with /sup 227/Ac was decommissioned at the Los Alamos National Laboratory, Los Alamos, New Mexico, in 1978. The building was constructed in the late 1940s to clean exhaust air from several buildings at TA-21, DP Site. It was in service until March 1970. The project involved preliminary decontamination, dismantling the building, and burying the debris at an on-site waste disposal/storage area. This report presents the details on the decommissioning pro… more
Date: November 1, 1981
Creator: Harper, J. R. & Garde, R.
Partner: UNT Libraries Government Documents Department
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Use of MCNPX for Alpha Spectrometry Simulations of a Continuous Air Monitor

Description: The purpose of this study was to determine if the alpha energy spectrum in a Passive Implanted Planar Silicon (PIPS) detector, as modeled by MCNPX [1], can be used to design a radon stripping algorithm for a continuous air monitor (CAM). This stripping algorithm would be employed to discriminate naturally occurring radioisotopes from the anthropogenic for nuclear safety -related applications. It is hoped that using an algorithm based on MCNPX simulations, the CAM will not be prone to false alar… more
Date: January 1, 2007
Creator: Robert Hayes, Craig Marianno
Partner: UNT Libraries Government Documents Department
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Pitfalls of Transparency: Lessons Learned from the Milford Flats Fire

Description: The Community Environmental Monitoring Program (CEMP) consists of a network of 29 radiation and weather monitoring stations located over a 160,000-km2 area of southern Nevada, southwestern Utah, and southeastern California. The program provides stakeholders with a hands-on role in the monitoring for airborne radioactivity that could result from ongoing or past activities on the Nevada Test Site (NTS). The CEMP’s mission includes provisions for the transparency of the monitoring data as well as … more
Date: January 16, 2008
Creator: Hartwell, T.; Shafer, D.; Tappen, J.; McCurdy, G.; Hurley, B. & Farmer, D.
Partner: UNT Libraries Government Documents Department
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DEVELOPMENT OF AG-1 SECTION FI ON METAL MEDIA FILTERS - 9061

Description: Development of a metal media standard (FI) for ASME AG-1 (Code on Nuclear Air and Gas Treatment) has been under way for almost ten years. This paper will provide a brief history of the development process of this section and a detailed overview of its current content/status. There have been at least two points when dramatic changes have been made in the scope of the document due to feedback from the full Committee on Nuclear Air and Gas Treatment (CONAGT). Development of the proposed section ha… more
Date: December 9, 2008
Creator: Adamson, D & Charles A. Waggoner, C
Partner: UNT Libraries Government Documents Department
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Use of a Radon Stripping Algorithm for Retrospective Assessment of Air Filter Samples

Description: An evaluation of a large number of air sample filters was undertaken using a commercial alpha and beta spectroscopy system employing a passive implanted planar silicon (PIPS) detector. Samples were only measured after air flow through the filters had ceased. Use of a commercial radon stripping algorithm was implemented to discriminate anthropogenic alpha and beta activity on the filters from the radon progeny. When uncontaminated air filters were evaluated, the results showed that there was a t… more
Date: January 23, 2009
Creator: Hayes, Robert
Partner: UNT Libraries Government Documents Department
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Effect of Intake Air Filter Condition on Vehicle Fuel Economy

Description: The U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy and the U.S. Environmental Protection Agency (EPA) jointly maintain a fuel economy website (www.fueleconomy.gov), which helps fulfill their responsibility under the Energy Policy Act of 1992 to provide accurate fuel economy information [in miles per gallon (mpg)] to consumers. The site provides information on EPA fuel economy ratings for passenger cars and light trucks from 1985 to the present and other relevan… more
Date: February 1, 2009
Creator: Norman, Kevin M; Huff, Shean P & West, Brian H
Partner: UNT Libraries Government Documents Department
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Problems Found Using a Radon Stripping Algorithm for Retrospective Assessment of Air Filter Samples

Description: An evaluation of a large number of air sample filters was undertaken using a commercial alpha and beta spectroscopy system employing a passive implanted planar silicon (PIPS) detector. Samples were only measured after air flow through the filters had ceased. Use of a commercial radon stripping algorithm was implemented to discriminate anthropogenic alpha activity on the filters from the radon progeny. When uncontaminated air filters were evaluated, the results showed that there was a time-depen… more
Date: April 1, 2008
Creator: Hayes, Robert
Partner: UNT Libraries Government Documents Department
open access

Special filter samples of Hanford process effluent gases

Description: This document contains information on special filter samples of Hanford Process Effluent Gases. The filters are identified by code numbers only. Included in this paper are tables explaining the sample code numbers, sampling locations, and process conditions during sampling. Also included, is a copy of the monthly and quarterly average results for Regional Monitoring's routine stack program for the fourth quarter of 1956.
Date: January 22, 1957
Creator: Soldat, J.K.
Partner: UNT Libraries Government Documents Department
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