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241-SY-101 air lance removal lessons learned

Description: An emergency task was undertaken to remove four air lances and one thermocouple (TC) tree from tank 241-SY-101 (SY-101). This resulted from video observation that these pipes were being severely bent during periodic gas release events that regularly occurred every three to four months. At the time, the gas release events were considered to be the number one safety issue within the US Department of Energy (DOE) complex. This emergency removal task was undertaken on an extremely short schedule th… more
Date: October 11, 1994
Creator: Moore, T. L. & Titzler, P. A.
Item Type: Refine your search to only Report
open access

300 Area treated effluent disposal facility sampling schedule

Description: This document is the interface between the 300 Area Liquid Effluent Process Engineering (LEPE) group and the Waste Sampling and Characterization Facility (WSCF), concerning process control samples. It contains a schedule for process control samples at the 300 Area TEDF which describes the parameters to be measured, the frequency of sampling and analysis, the sampling point, and the purpose for each parameter.
Date: October 11, 1994
Creator: Loll, C. M.
Item Type: Refine your search to only Report
open access

An adaptive optics package designed for astronomical use with a laser guide star tuned to an absorption line of atomic sodium

Description: We present the design and implementation of a very compact adaptive optic system that senses the return light from a sodium guide-star and controls a deformable mirror and a pointing mirror to compensate atmospheric perturbations in the wavefront. The deformable mirror has 19 electrostrictive actuators and triangular subapertures. The wavefront sensor is a Hartmann sensor with lenslets on triangular centers. The high-bandwidth steering mirror assembly incorporates an analog controller that samp… more
Date: April 11, 1994
Creator: Salmon, J. T.; Avicola, K. & Brase, J. M.
Item Type: Refine your search to only Article
open access

BCE selector valves and flow proportional sampler

Description: This Acceptance Test Procedure (ATP) has been prepared to demonstrate that the Electrical/Instrumentation systems for the B-Plant Process Condensate Treatment Facility (BCE) function as required by project criteria. Tests will be run to: Verify the operation of the solenoid valve and associated limit switches installed for the BCE portion of W-007H; Operate the solenoid valve and verify the proper operation of the associated limit switches based on the position of the solenoid valve;and, Demons… more
Date: August 11, 1994
Creator: Rippy, G. L.
Item Type: Refine your search to only Report
open access

Behavior of mercury in the formic acid vent condenser. Interim report

Description: (This report relates to the Defense Waste Processing Facility.) The concentrations of mercury at the FAFC inlet and exit were measured during the BL1 and PX6 runs of the Integrated DWPF Melter System (IDMS) with the HEME bypassed and without the ammonia scrubber. The results show that mercury concentrations of approximately 2.6-12.7 (mean = 6.2) times saturation occur at the FAFC exit. The concentration of mercury at the SRAT condenser exit was found to be 10 times the saturation value. FAVC ex… more
Date: October 11, 1994
Creator: Zamecnik, J. R.
Item Type: Refine your search to only Report
open access

A comparison of two potential repositories: The Waste Isolation Pilot Plant and Yucca Mountain

Description: Two repositories in the same country, yet Congress and the DOE manage them differently. While Congress encumbers WIPP with unanticipated oversight and inappropriate regulations, Congress streamlines the commercial repository program and promises improved regulations for Yucca Mountain. While DOE encouraged science at the expense of the WIPP infrastructure, DOE postponed its scientific investigations at Yucca Mountain and constructed an infrastructure, large enough to support an ambitious progra… more
Date: July 11, 1994
Creator: Pflum, C.G.
Item Type: Refine your search to only Report
open access

Continuation application, progress report, year IV, June 8, 1993--June 7, 1994

Description: Project SEED is an innovative career development program sponsored by the American Chemical Society for economically disadvantages high school students. SEED students spend ten weeks during the summer in an academic, industrial, or governmental research laboratory working under the supervision of a researcher or research assistant. The primary objective of Project SEED is to encourage participants to pursue strong academic programs in order to more fully develop their career potential and help … more
Date: March 11, 1994
Item Type: Refine your search to only Report
open access

The cost of wetland creation and restoration. Final report, [February 12, 1992--April 30, 1994]- Draft

Description: This report examines the economics of wetland creation, restoration, and enhancement projects, especially as they are used within the context of mitigation for unavoidable wetland losses. Complete engineering-cost-accounting profiles of over 90 wetland projects were developed in collaboration with leading wetland restoration and creation practitioners around the country to develop a primary source database. Data on the costs of over 1,000 wetland projects were gathered from published sources an… more
Date: July 11, 1994
Creator: King, D. & Costanza, R.
Item Type: Refine your search to only Report
open access

Degradation of HEPA filters exposed to DMSO

Description: 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: Refine your search to only Article
open access

Detection and quantitative analysis of ferrocyanide and ferricyanide: FY 93 Florida State University Raman spectroscopy report

Description: This report provides a summary of work to develop and investigate the feasibility of using Raman spectroscopy with tank waste materials. It contains Raman spectra from organics, such as ethylenediaminetetraacetic acid (EDTA), hydroxyethylenediaminetetraacteic acid (HEDTA), imino diacetic acid (IDA), kerosene, tributyl phosphate (TBP), acetone and butanol, anticipated to be present in tank wastes and spectra from T-107 real and BY-104 simulant materials. The results of investigating Raman for de… more
Date: October 11, 1994
Creator: Mann, C. K. & Vickers, T. J.
Item Type: Refine your search to only Report
open access

Development of a low-latency scalar communication routine on message-passing architectures

Description: One of the most significant advances in computer systems over the past decade is parallel processing. To be scalable to a large number of processing nodes and to be able to support multiple levels and forms of parallelism and its flexible use, new parallel machines have to be multicomputer architectures that have general networking support and extremely low internode communication latencies. The performance of a program when ported to a parallel machine is limited mainly by the internode commun… more
Date: January 11, 1994
Creator: Pai, R.
Item Type: Refine your search to only Thesis or Dissertation
open access

Development of a membrane-based process for the treatment of oily waste waters. [Quarterly] report, September 5--December 4, 1993

Description: The overall goal of this program is to develop a system based on reverse-osmosis (RO) membranes that can treat oily water economically. This system will be based on the use of thin-film-composite (TFC) membranes that consist of a selective coating placed on a solvent-resistant hollow-fiber support. For this program, we plan to develop solvent-resistant hollow-fiber supports and coat them with a ``loose RO`` coating. We developed the coating, which is designated TTM, in previous work for the tre… more
Date: March 11, 1994
Creator: McCray, S. B.
Item Type: Refine your search to only Report
open access

DOE Environmental Technology Department - A Fact Sheet

Description: The Department of Energy (DOE) established the Office of Technology Development in 1989 to develop faster and less expensive technical solutions to the Department's widespread environmental problems, primarily the legacy of decades of nuclear weapons production. Without new environmental technologies, DOE contends, some types of contamination may prove impossible to clean up. The Office of Technology Development, which is part of DOE's Environmental Management Program (EM), manages all stages o… more
Date: March 11, 1994
Creator: Holt, Mark
Item Type: Refine your search to only Report
open access

Effect of N{sub 2} contamination in L3 forward/backward muon chambers

Description: Since the presence of a small amount of air is unavoidable in large drift chamber detectors, we present a study of the effect of {ital N}{sub 2} contamination on the electron drift velocity in a working Forward/Backward Muon Chamber placed in the MIT cyclotron magnet. The nominal gas mixture, Ar:CO{sub 2}:iC{sub 4}H{sub 10} (86:10:4), was varied by including as much as 1% N{sub 2}. Results at B=0 and 0.5T are shown.
Date: May 11, 1994
Creator: Becker, U.; Nahn, S.C.; Rodin, J.P. & Smith, B.
Item Type: Refine your search to only Report
open access

EIA model documentation: World oil refining logistics demand model,``WORLD`` reference manual. Version 1.1

Description: This manual is intended primarily for use as a reference by analysts applying the WORLD model to regional studies. It also provides overview information on WORLD features of potential interest to managers and analysts. Broadly, the manual covers WORLD model features in progressively increasing detail. Section 2 provides an overview of the WORLD model, how it has evolved, what its design goals are, what it produces, and where it can be taken with further enhancements. Section 3 reviews model man… more
Date: April 11, 1994
Item Type: Refine your search to only Report
open access

Electronic phase separation and high temperature superconductors

Description: The authors review the extensive evidence from model calculations that neutral holes in an antiferromagnet separate into hole-rich and hole-poor phases. All known solvable limits of models of holes in a Heisenberg antiferromagnet exhibit this behavior. The authors show that when the phase separation is frustrated by the introduction of long-range Coulomb interactions, the typical consequence is either a modulated (charge density wave) state or a superconducting phase. The authors then review so… more
Date: January 11, 1994
Creator: Kivelson, S. A. & Emery, V. J.
Item Type: Refine your search to only Article
open access

Engineering task plan for steam line ramp calculations

Description: The purpose of this document is to provide an approved work plan to perform calculations that verify the load limits of a proposed ramp over a steam line at the back side (East side) of SY Farm in support of work package 2W-94-00812/K. The objective of this supporting document is to provide Operations with a set of checked calculations that verify the ramp over the steam line at SY Farm will support a fully loaded concrete mixer truck without affecting the steam line. The calculations will be p… more
Date: October 11, 1994
Creator: DeSantis, G. N. & Freeman, R. D.
Item Type: Refine your search to only Report
open access

Environmental radiation monitoring plan for depleted uranium and beryllium areas, Yuma Proving Ground

Description: This Environmental Radiation Monitoring Plan (ERM) discusses sampling soils, vegetation, and biota for depleted uranium (DU) and beryllium (Be) at Yuma Proving Ground (YPG). The existing ERM plan was used and modified to more adequately assess the potential of DU and Be migration through the YPG ecosystem. The potential pathways for DU and Be migration are discussed and include soil to vegetation, soil to animals, vegetation to animals, animals to animals, and animals to man. Sample collection … more
Date: May 11, 1994
Creator: Ebinger, Michael H. & Hansen, Wayne R.
Item Type: Refine your search to only Report
open access

Evaluating software for safety systems in nuclear power plants

Description: In 1991, LLNL was asked by the NRC to provide technical assistance in various aspects of computer technology that apply to computer-based reactor protection systems. This has involved the review of safety aspects of new reactor designs and the provision of technical advice on the use of computer technology in systems important to reactor safety. The latter includes determining and documenting state-of-the-art subjects that require regulatory involvement by the NRC because of their importance in… more
Date: January 11, 1994
Creator: Lawrence, J. D.; Persons, W. L.; Preckshot, G. G. & Gallagher, J.
Item Type: Refine your search to only Article
open access

Evaluation of sludge screening limit for Tank Farm Low Level Waste

Description: High Level Waste (HLW) generated during Separations processing in the F- and H-Canyons is transferred to the 241-F/H Tank Farms for storage in 61 underground, carbon steel tanks. The waste is an aqueous solution containing dissolved sodium salts and insoluble metal oxides/hydroxides. As the waste is collected in a receipt tank, the insoluble solids settle to form the sludge phase. The supernatant solution is decanted to an evaporator to reduce the volume. The evaporator concentrate is transferr… more
Date: August 11, 1994
Creator: Georgeton, G. K.
Item Type: Refine your search to only Report
open access

Fundamental Studies of Coal Liquefaction. Quarterly Report No. 9, October 1, 1993--January 1, 1994

Description: The results obtained over the past period include studies in our cell with Wyodak coal, and argon, water, n-undecane, and tetralin as media. The argon work was conducted at 7 atm and the others at 200 atm, and the results are shown in Figure 1. As we saw with Illinois No. 6 coal, in argon the particles began to swell at around 300{degree}C, and develop a fluid-like appearance. As just noted, the phenomenon appears to be the development of a tar, which is slowly expelled from the particles with … more
Date: January 11, 1994
Creator: Ross, David S.
Item Type: Refine your search to only Report
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