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in subjects: "Protective Structures And Equipment"

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Protective clothing based on permselective membrane and carbon adsorption

The objective of this program is to develop improved protective clothing for use by workers engaged in decomissioning and decontamination of former DOE sites. The proposed technology concerns a new protective clothing fabric that combines a permselective membrane layer (for water transmission and breathability) with a sorptive layer.

Date: March 1, 1995

Creator: Baker, R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Preconceptual design for the electrostatic enclosure

This report presents a preconceptual design (design criteria and assumptions) for electrostatic enclosures to be used during buried transuranic waste recovery operations. These electrostatic enclosures (along with the application of dust control products) will provide an in-depth contamination control strategy. As part of this preconceptual design, options for electrostatic curtain design are given including both hardwall and fabric enclosures. Ventilation systems, doors, air locks, electrostat… more

Date: September 1, 1992

Creator: Meyer, L. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Clean room wiping liquids

A water-based liquid containing isopropyl alcohol, ammonium hydroxide, and surfactants was developed to replace 1,1,2-trichlorotrifluoroethane for the dampening of clean room wiping cloths used to wipe clean benches, clean room equipment, and latex finger cots and gloves.

Date: December 1, 1991

Creator: Harding, W. B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

A parametric study of smoke propagation using the CFAST computer code

When performing a Fire Hazards Analysis (FHA), fire protection engineers are often. interested in determining the degree and timing of smoke propagation from one room to Another within buildings. Often, the engineer must make judgments based on a limited set of guidelines and available information. In order to provide additional data to assist in these judgments, the Risk and Source Term Technology (R&STT) Group of Westinghouse Savannah River Company (WSRC) has conducted a parametric study of s… more

Date: September 1, 1993

Creator: Kalinich, D. A. & Bailey, R. T.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Considerations of torsional effects on the seismic response of nuclear facilities

This paper studies the effects of torsion in models developed for performing soil-structure interaction analyses of nonsymmetric structure such as the process structures in many Department of Energy (DOE) facilities. Because of the unsymmetrical nature of these structures, the introduction of the torsional effects could significantly amplify their structural response to seismic motions. In this study, a typical nuclear process building was employed and seismic analyses were performed with the o… more

Date: April 1, 1992

Creator: Xu, J. & Miller, C. A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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A methodology to model local nonlinearities in a slender reinforced concrete member subjected to seismic deformations

A methodology is proposed for modeling local nonlinear behavior of slender reinforced concrete members. The nonlinearity is modeled by two orthogonal assemblages of nonlinear truss elements representing the nonlinear behavior of concrete and steel reinforcement. The trusses represent narrow strips of concrete to closely calculate the section neutral axis. This modeling procedure is computationally very efficient for seismic nonlinear dynamic analysis. Such a model is used to evaluate a critical… more

Date: December 31, 1991

Creator: Bolourchi, S.; Kabir, A. F. & Maryak, M. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Emery 3004 as a challenge aerosol for HEPA filter testing

HEPA filters are used in nuclear facilities for contamination control and air treatment and are constructed to be 99.97% efficient in trapping particles of 0.3 microns or larger in size. Prior to installation at Hanford facilities HEPA filters are tested against the manufacturer`s efficiency specifications by the Hanford Environmental Health Foundation using an aerosol with a monodispersed particle size of 0.3 microns. The oil or material used for generating the aerosol, has historically been D… more

Date: February 1, 1994

Creator: Barber, J. D. & Gilles, D. A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Test plan for engineering scale electrostatic enclosure demonstration

This test plan describes experimental details of an engineering-scale electrostatic enclosure demonstration to be performed at the Idaho National Engineering Laboratory in fiscal year (FY)-93. This demonstration will investigate, in the engineering scale, the feasibility of using electrostatic enclosures and devices to control the spread of contaminants during transuranic waste handling operations. Test objectives, detailed experimental procedures, and data quality objectives necessary to perfo… more

Date: February 1, 1993

Creator: Meyer, L. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Airbags to Martian Landers: Analyses at Sandia National Laboratories

A new direction for the national laboratories is to assist US business with research and development, primarily through cooperative research and development agreements (CRADAs). Technology transfer to the private sector has been very successful as over 200 CRADAs are in place at Sandia. Because of these cooperative efforts, technology has evolved into some new areas not commonly associated with the former mission of the national laboratories. An example of this is the analysis of fabric structu… more

Date: March 1, 1994

Creator: Gwinn, K. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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308 Building Zone I stabilization and confinement

The 308 Building (Fast Flux Test Facility [FFTF] fuel supply) at the Hanford Site, located in Richland, Washington, is currently in transition to shutdown status. After shutdown, the facility will be maintained/surveilled and turned over to the U.S. Department of Energy (DOE) Office of Facility Transition and Management (EM-60) for utilization, remedial action, or decontamination and decommissioning (D&D). This may require that the facility be maintained in the shutdown mode for up to 30 years.… more

Date: October 1, 1993

Creator: Metcalf, I. L.; Schwartz, K. E.; Rich, J. W.; Benecke, M. W. & Rasmussen, D. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Dynamic characterization and damage detection in the I-40 bridge over the Rio Grande

In the 1960`s and 1970`s over 2500 bridges were built in the U.S. with a design similar to those on Interstate 40 over the Rio Grande in Albuquerque, New Mexico. These bridges were built without structural redundancy and typically have only two plate girders carrying the entire dead and live loads. Failure of either girder is assumed to produce catastrophic failure of the bridge, hence these bridges are referred to as fracture-critical bridges. The Federal Highway Administration (FHWA) and the … more

Date: June 1, 1994

Creator: Farrar, C. R.; Baker, W. E.; Bell, T. M.; Cone, K. M.; Darling, T. W.; Duffey, T. A. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Alternate particle removal technologies for the Airborne Activity Confinement System at the Savannah River Site

This report presents a review of the filtration technologies available for the removal of particulate material from a gas stream. It was undertaken to identify alternate filtration technologies that may be employed in the Airborne Activity Confinement System (AACS) at the Savannah River Plant. This report is organized into six sections: (1) a discussion of the aerosol source term and its definition, (2) a short discussion of particle and gaseous contaminant removal mechanisms, (3) a brief overv… more

Date: September 1, 1991

Creator: Brockmann, J. E.; Adkins, C. L. J. & Gelbard, F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Radiological implications of contact maintenance: Impacts on facility design

The purpose of this document is to provide an initial, rough order of magnitude, evaluation of the relationship between the concentrations of selected radionuclides in process streams of a chemical process plant and the required degree of protective features for plant operations personnel. The evaluation provided in this document specifies ``trigger level`` concentrations of {sup 90}Sr, {sup 137}Cs, and transuranics (TRU) for ``contact maintenance`` activities. Concentrations above the ``trigge… more

Date: March 10, 1994

Creator: Brown, R. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Aerosol filtration with steel fiber filters

We have conducted an experimental study of aerosol penetration through a new high efficiency steel fiber filter and filter media that we developed in cooperation with Pall Corporation. Our previous studies have shown that sintered steel fiber media have significant improvements in higher filter efficiency and lower pressure drop than the previous steel filter technology based on sintered powder metal media. In the present study, we have measured the penetration of dioctyl sebacate (DOS) aerosol… more

Date: April 1, 1993

Creator: Bergman, W.; Wilson, K.; Larsen, G. & Lopez, R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Filter efficiency and pressure drop calculations through two and three dimensional fiber arrays

We have used a commercially available fluid dynamics code, NEKTON version 2.85, and the Langevin particle equation of motion to compute the particle capture efficiency and pressure drop through selected two- and three-dimensional fiber arrays. The approach we used was to first compute the air velocity vector field throughout a defined region containing the fiber matrix. The particle capture in the fiber matrix is then computed by superimposing the Langevin particle equation of motion over the f… more

Date: April 1, 1994

Creator: Bergman, W.; Corey, I. & Speck, D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Critical mass control specification 7.35 weight percent Pu-A1 alloy fuel element storage gas cylinder storage area, 234-5 building

Plutonium-aluminum fuel elements, which were fabricated at Hanford Atomic Products Operation for a special Atomic Energy Commission program, but were rejected for failure to meet specifications, were returned to Hanford for recovery. These elements, although contaminated during acceptance checking have not been used in the proposed reactor tests. This special material will be stored until recovery is completed. This report provides the critical mass control specification for the 7.35 weight per… more

Date: January 16, 1963

Creator: Sloat, R. J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Leaks in nuclear grade high efficiency aerosol filters

Nuclear grade high efficiency aerosol filters, also known as high efficiency particulate air (HEPA) filters, are commonly used in air cleaning systems for removal of hazardous aerosols. Performance of the filter units is important in assuring health and environmental protection. The filter units are constructed from pleated packs of fiberglass filter media sealed into rigid frames. Results of previous studies on such filter units indicate that their performance may not be completely predicted b… more

Date: July 1, 1994

Creator: Scripsick, R. C.

Item Type: Thesis or Dissertation

Partner: UNT Libraries Government Documents Department

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Decontaminating lead bricks and shielding

Lead used for shielding is often surface contaminated with radioisotopes and is therefore a RCRA D008 mixed waste. The technology-based standard for treatment is macroencapsulation. However, decontaminating and recycling the clean lead is a more attractive solution. Los Alamos National Laboratory decontaminates material and equipment contaminated with radioisotopes. Decontaminating lead poses special problems because of the RCRA hazard classification and the size of the inventory, now about 50 … more

Date: May 1, 1993

Creator: Lussiez, G. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Degradation of HEPA filters exposed to DMSO

Dimethyl sulfoxide (DMSO) sprays are being used to remove the high explosive (HE) from nuclear weapons in the process of their dismantlement. A boxed 50 cfm HEPA filter with an integral prefilter was exposed to DMSO vapor and aerosols that were generated by a spray nozzle to simulate conditions expected in the HE dissolution operation. After 198 hours of operation, the pressure drop of the filter had increased from 1.15 inches to 2.85 inches, and the efficiency for 0.3 {mu}m dioctyl sebacate (D… more

Date: July 11, 1994

Creator: Bergman, W.; Wilson, K.; Larsen, G.; Lopez, R. & LeMay, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Argonne-West Waste Characterization Area for mixed TRU waste

Argonne National Laboratory-West has developed characterize and repackage transuranic mixed waste, the Waste Characterization Area (WCA). This new facility is designed to current Department of Energy design criteria for radioactive waste handling facilities Characterization and repackaging of real waste within the WCA began in April 1994. Characterization operations include visual examination of solid waste and drum headspace and inner bag gas sample collection and analysis. Additions planned f… more

Date: July 1, 1994

Creator: Duncan, D. S.; Dwight, C. C.; Parks, R. L.; Black, D. B. & Courtney, J. C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

A user`s evaluation of radial flow HEPA filters

High efficiency particulate air (HEPA) filters of rectangular cross section have been used to remove particulates and the associated radioactivity from air ventilation streams since the advent of nuclear materials processing. Use of round axial flow HEPA filters is also longstanding. The advantages of radial flow filters in a circular configuration have been well demonstrated in UKAEA during the last 5--7 years. An evaluation of radial flow filters for fissile process gloveboxes reveals several… more

Date: July 1, 1992

Creator: Purcell, J. A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Hierarchical analysis of filtration. Progress report

The original proposal for this work suggested two lines Of analysis that could be used to develop an hierarchical analysis of filtration. The first of these was semi-empirical and required the use of an angle-dependent rate coefficient to model the effect of particle inertia, while the second made use of a particle velocity decomposition that separated the velocity into an inertial part and a diffusive part. We have concluded that the semiempirical approach cannot lead to an efficient treatment… more

Date: July 1, 1993

Creator: Quintard, M. & Whitaker, S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Test plan for qualification testing of the 241-SY-101 Flexible Receiver System

No Description Available.

Date: October 3, 1994

Creator: Ritter, G. A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

B Plant exhaust filter inventory analysis

No Description Available.

Date: October 1, 1994

Creator: Lan, J. S.; Wootan, D. W.; Carter, L. L.; Bunch, W. L.; Covey, L. I. & Greenborg, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department