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Smoke dispersal from a controlled fire in logging debris over a cleared pine forest area

Description: The dispersion of smoke in the atmosphere was studied during a controlled fire of forest debris. An instrumented aircraft measured smoke density and other parameters in multiple traverses through the smoke plume. The data permitted contour maps of constant smoke density to be drawn in three dimensions. Centerline smoke density reached a maximum of 0.43 ..mu..g/m/sup 3/. Supporting meteorological data were taken at an array of towers (7 towers, each 62 meters high) near the fire, and at differen… more
Date: January 1, 1976
Creator: Murphy, C. E. Jr.; Sigmon, J. T.; Williams, D. T.; Ryan, P. W. & McNab, W. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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US team measurements during the June 1987 experimental HT release at the Chalk River Nuclear Laboratories, Ontario, Canada

Description: In June 1987, an experiment was performed at the Chalk River Nuclear Laboratories in Ontario, Canada, to study the oxidation of HT in the environment. The experiment involved a 30-minute release of 100 Ci of HT to the atmosphere at an elevation of one meter. The HTOHT ratios were shown to slowly increase downwind (/approximately/4 /times/ 10/sup /minus/5/ at 50 meters to almost 10/sup /minus/3 at 400 meters) as conversion of HT takes place. For several days after the release, HTO concentrations… more
Date: January 1, 1988
Creator: Jalbert, R. A. & Murphy, C. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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An atmospheric tritium release database for model comparisons

Description: A database of vegetation, soil, and air tritium concentrations at gridded coordinate locations following nine accidental atmospheric releases is described. While none of the releases caused a significant dose to the public, the data collected is valuable for comparison with the results of tritium transport models used for risk assessment. The largest, potential, individual off-site dose from any of the releases was calculated to be 1.6 mrem. The population dose from this same release was 46 per… more
Date: December 19, 1991
Creator: Murphy, C. E. Jr. & Wortham, G. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vegetation uptake from burial ground alpha waste trenches

Description: This study was conducted as part of an evaluation of the potential radiological consequences of reinhabiting the SRS burial ground. The objective was to determine the uptake of buried, low-level, transuranic waste from unlined earthen trenches by forest vegetation. Two tree plots were established in 1979. One plot was put over a trench containing alpha waste and the other in an area without trenches. When the tree seedlings were sampled during 1979 and 1980, and analysized for {sup 239}Pu and {… more
Date: January 1, 1989
Creator: Murphy, C. E. Jr. & Tuckfield, R. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Model for absorption and release of gaseous materials by forest canopies. [Tritium]

Description: A model of the physical processes defining the absorption and release of materials by a forest canopy has been developed. The model deals with the turbulent transport of gaseous materials in the surface boundary layer near the canopy, the turbulent transport in the canopy atmosphere, the transport through the boundary layer near the leaf and soil surface, and the solution of the gaseous materials in intracellular fluids and subsequent diffusion into the leaf cells. The model is used to simulate… more
Date: January 1, 1976
Creator: Murphy, C. E. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Transuranic element uptake and cycling in a forest over an old burial ground

Description: The consequences of returning the Savannah River Site (SRS) burial ground area to general public access at the time of completion of the SRS mission is being investigated. This study includes evaluation of the radiological impact to inhabitants of the area under a number of scenarios that include the return of the land to farming or forestry use with or without exhumation of the buried waste.
Date: January 1, 1992
Creator: Murphy, C. E. Jr. & Tuckfield, J. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Tritium in the Savannah River environment addendum to WSRC-RP--90-424-1, Revision 1

Description: This document is an addendum to Tritium in the Savannah River Site Environment,'' WSRC-RP90-424- 1, released in May of 1991. The purpose of this report is to update the information found in WSRC-RP-90-424-1 for the four year period 1987--1990. Some data has also been included from 1991. The report includes summaries of atmospheric and aqueous monitoring of tritium and estimates of the dose to the population surrounding the Savannah River Site.
Date: May 28, 1992
Creator: Murphy, C. E. Jr. & Carlton, W. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of potential radiation dose-to-man from an acute tritium release into a forest ecosystem

Description: On May 2, 1974, 479,000 curies of tritium gas escaped from a Savannah River Plant exhaust stack. The tritium first reached the ground in a pine forested area and was partially assimilated into the ecosystem. Samples of vegetation collected and measured for a period of 70 days showed an increase in the levels of tritiated water. Cycling of the tritium retained in the forest ecosystem resulted in a higher concentration of tritiated water vapor in the air at breathing height near the forest floor … more
Date: January 1, 1977
Creator: Watts, J. R. & Murphy, C. E. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Conversion of gaseous molecular tritium to tritiated water in biological systems. [Role of soil microorganisms]

Description: The exposure of field soils to molecular tritium under laboratory conditions showed that molecular tritium was converted to tritiated water within the soil column. Soil conditions which promoted active metabolism of soil microorganisms also increased the amount of tritium found as tritiated water. Soil sterilization greatly decreased the conversion of molecular tritium, while reinnoculation with soil microorganisms restored the conversion ability of the soil. On the basis of these results, we c… more
Date: June 1, 1976
Creator: Murphy, C. E. Jr.; Boni, A. L. & Tucker, S. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

BNL NONLINEAR PRE TEST SEISMIC ANALYSIS FOR THE NUPEC ULTIMATE STRENGTH PIPING TEST PROGRAM.

Description: The Nuclear Power Engineering Corporation (NUPEC) of Japan has been conducting a multi-year research program to investigate the behavior of nuclear power plant piping systems under large seismic loads. The objectives of the program are: to develop a better understanding of the elasto-plastic response and ultimate strength of nuclear piping; to ascertain the seismic safety margin of current piping design codes; and to assess new piping code allowable stress rules. Under this program, NUPEC has p… more
Date: August 17, 2003
Creator: Degrassi, G.; Hofmayer, C.; Murphy, C.; Suzuki, K. & Namita, Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Design of a crystal extraction facility in the east utility straight

Description: Parasitic extraction of a small fraction of the 20-TeV circulating beam of the Superconducting Super Collider can be done using a bent crystal situated in the halo of the orbiting beam. The authors present a design of a crystal extraction system that is compatible with current plans for momentum scraping in the east utility straight. The only modification to the collider tunnel is the addition of a 160-m-long alcove in the east utility straight to mate the extracted beam line microtunnel with t… more
Date: September 1, 1993
Creator: Dukes, E. C.; Murphy, C. T. & Parker, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tritium uptake by fish in a small stream. Revision 1

Description: The tritium concentration in the water from freeze drying and the water from combustion of the dry tissue was measured in fish (largemouth bass), stream macrophytes, and streamside vegetation at five sampling locations in Four Mile Branch on the Savannah River Site (SRS). Four Mile Branch has elevated tritium concentration, largely from migration of water through the soil from adjacent seepage basins that received industrial wastewater containing tritium. The stream water and the vegetation, th… more
Date: September 17, 1992
Creator: Eaton, D. & Murphy, C. E. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Microstructure / mechanical-property relationships and R-curve behavior in Si{sub 3}N{sub 4}/Si{sub 3}N{sub 4}(w) composites

Description: Fracture toughness of Si{sub 3}N{sub 4}-whisker-reinforced Si{sub 3}N{sub 4}-matrix composites were evaluated with various whisker contents. Toughness was observed to increase with increasing whisker content, reaching a maximum value of 8.8 MPa{radical}4 at 5 vol.% whisker content. Additional whisker content caused reduced toughness. A model based on microstructural features indicates that the observed dependence of toughness on whisker content is due to both whisker-toughening and matrix-grain… more
Date: June 1, 1992
Creator: Singh, J. P.; Chu, C. Y.; Murphy, C. & Singh, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vegetation concentration and inventory of metals and radionuclides in the old F-area seepage basin, 904-49G

Description: Measured concentrations of radionuclides and toxic metals are used to calculate the total inventory of in the vegetation growing on the Old F-Area Seepage Basin. Air concentrations and inhalation doses from exposure to smoke from burning the vegetation are calculated to evaluate the effect of open air burning. Radionuclide inventory is one order of magnitude (10 x) less than those necessary to produce a 1 mrem dose. Air concentrations of toxic metals are less than one third the permissible occu… more
Date: November 1, 1994
Creator: Murphy, C. E. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cesium in the Savannah River Site environment

Description: Cesium in the Savannah River Site Environment is published as a part of the Radiological Assessment Program (RAP). It is the fourth in a series of eight documents on individual radioisotopes released to the environment as a result of Savannah River Site (SRS) operations. The earlier documents describe the environmental consequences of tritium, iodine, and uranium. Documents on plutonium, strontium, carbon, and technetium will be published in the future. These are dynamic documents and current p… more
Date: March 1, 1992
Creator: Carlton, W. H.; Bauer, L. R.; Evans, A. G.; Geary, L. A.; Murphy, C. E. Jr.; Pinder, J. E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of plutonium in the Savannah River Site environment. Revision 1

Description: Plutonium in the Savannah River Site Environment is published as a part of the Radiological Assessment Program (RAP). It is the fifth in a series of eight documents on individual radioisotopes released to the environment as a result of Savannah River Site (SRS) operations. These are living documents, each to be revised and updated on a two-year schedule. This document describes the sources of plutonium in the environment, its release from SRS, environmental transport and ecological concentratio… more
Date: December 31, 1992
Creator: Carlton, W. H.; Evans, A. G.; Geary, L. A.; Murphy, C. E. Jr.; Pinder, J. E. & Strom, R. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An atmospheric tritium release database for model comparisons

Description: A database of vegetation, soil, and air tritium concentrations at gridded coordinate locations following nine accidental atmospheric releases is described. While none of the releases caused a significant dose to the public, the data collected is valuable for comparison with the results of tritium transport models used for risk assessment. The largest, potential, individual off-site dose from any of the releases was calculated to be 1.6 mrem. The population dose from this same release was 46 per… more
Date: December 19, 1991
Creator: Murphy, C. E. Jr. & Wortham, G. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tritium in the Savannah River environment addendum to WSRC-RP--90-424-1, Revision 1

Description: This document is an addendum to ``Tritium in the Savannah River Site Environment,`` WSRC-RP90-424- 1, released in May of 1991. The purpose of this report is to update the information found in WSRC-RP-90-424-1 for the four year period 1987--1990. Some data has also been included from 1991. The report includes summaries of atmospheric and aqueous monitoring of tritium and estimates of the dose to the population surrounding the Savannah River Site.
Date: May 28, 1992
Creator: Murphy, C. E. Jr. & Carlton, W. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of radiocarbon in the Savannah River Site Environment

Description: This report is a radiological assessment of {sup 14}C releases from the Savannah River Site. During the operation of five production reactors {sup 14}C has been produced at SRS. Approximately 3000 curies have been released to the atmosphere but there are no recorded releases to surface waters. Once released, the {sup 14}C joins the carbon cycle and a portion enters the food chain. The overall radiological impact of SRS releases on the offsite maximum individual can be characterized by a dose of… more
Date: March 1, 1993
Creator: Carlton, W. H.; Evans, A. G.; Murphy, C. E. Jr. & Tuck, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transuranic element uptake and cycling in a forest over an old burial ground

Description: The consequences of returning the Savannah River Site (SRS) burial ground area to general public access at the time of completion of the SRS mission is being investigated. This study includes evaluation of the radiological impact to inhabitants of the area under a number of scenarios that include the return of the land to farming or forestry use with or without exhumation of the buried waste.
Date: July 1, 1992
Creator: Murphy, C. E. Jr. & Tuckfield, J. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Levels of radioactivity in fish from streams near F-Area and H-Area seepage basins

Description: This report summarizes results of recent analyses of radioactivity in fish from SRS streams near the F-Area and H-Area seepage basins. Fish were collected from headwater areas of Four Mile Creek and Pen Branch, from just below the H-Area seepage basin, and from three sites downstream in Four Mile Creek. These fish were analyzed for gross alpha and gross beta radioactivity using standard EPA methods. Levels of gross alpha and nonvolatile beta radioactivity in fish were found to be comparable to … more
Date: May 1, 1991
Creator: Murphy, C. E. Jr. & Loehle, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tritium Atmospheric Transport and Deposition Following Acute Releases: Comparisons With a Simple Transport Model

Description: During 35 years of operation of the Savannah River Site (SRS) there have been a small number of inadvertent tritium releases to the atmosphere. After detection of the releases by stack monitors, field crews were dispatched to determine the concentration of tritium in the environment. The objective of the measurement was to verify environmental concentrations calculated by dose assessment models. Air samples were used to verify the concentration levels and tritium forms during the plume passage.… more
Date: Autumn 1991
Creator: Murphy, C. E. Jr.; Bauer, L. R. & Hoel, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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