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Fire protection countermeasures for containment ventilation systems
The goal of this project is to find countermeasures to protect High Efficiency Particulate Air (HEPA) filters, in exit ventilation ducts, from the heat and smoke generated by fire. Initially, methods were developed to cool fire-heated air by fine water spray upstream of the filters. It was recognized that smoke aerosol exposure to HEPA filters could also cause disruption of the containment system. Through testing and analysis, several methods to partially mitigate the smoke exposure to the HEPA filters were identified. A continuous, movable, high-efficiency prefilter using modified commercial equipment was designed. The technique is capable of protecting HEPA filters over the total time duration of the test fires. The reason for success involved the modification of the prefiltration media. Commercially available filter media has particle sorption efficiency that is inversely proportional to media strength. To achieve properties of both efficiency and strength, rolling filter media were laminated with the desired properties. The approach was Edisonian, but truncation in short order to a combination of prefilters was effective. The application of this technique was qualified, since it is of use only to protect HEPA filters from fire-generated smoke aerosols. It is not believed that this technique is cost effective in …
Date:
August 25, 1980
Creator:
Alvares, N.; Beason, D.; Bergman, V.; Creighton, J.; Ford, H. & Lipska, A.
Object Type:
Report
System:
The UNT Digital Library
Hybrid charged-particle guide for studying (n, charged particle) reactions
Charged-particle transport systems consisting of magnetic quadrupole lenses have been employed in recent years in the study of (n, charged particle) reactions. We have completed a new transport system that is based both on magnetic lenses as well as electrostatic fields. The magnetic focusing of this charged-particle guide is provided by six magnetic quadrupole lenses arranged in a CDCCDC sequence (in the vertical plane). The electrostatic field is produced by a wire at high voltage which stretches the length of the guide and is physically at the center of the magnetic axis. The magnetic lenses are used for charged particles above 5 MeV; the electrostatic guide is used for lower energies. This hybrid system possesses the excellent focusing and background rejection properties of other magnetic systems. For low energy charged-particles, the electrostatic transport avoids the narrow band-passes in charged-particle energy which are a problem with purely magnetic transport systems. This system is installed at the LLNL Cyclograaff facility for the study of (n, charged particle) reactions at neutron energies up to 35 MeV.
Date:
August 25, 1982
Creator:
Haight, R. C.; White, R. M. & Zinkle, S. J.
Object Type:
Article
System:
The UNT Digital Library
Supernovae, compact stars and nuclear physics
We briefly review the current understanding of supernova. We investigate the implications of rapid rotation corresponding to the frequency of the new pulsar reported in the supernovae remnant SN1987A. It places very stringent conditions on the equation of state if the star is assumed to be bound by gravity alone. We find that the central energy density of the star must be greater than 12 times that of nuclear density to be stable against the most optimistic estimate of general relativistic instabilities. This is too high for the matter to plausibly consist of individual hadrons. We conclude that the newly discovered pulsar, if its half-millisecond signals are attributable to rotation, cannot be a neutron star. We show that it can be a strange quark star, and that the entire family of strange stars can sustain high rotation under appropriate conditions. We discuss the conversion of a neutron star to strange star, the possible existence of a crust of heavy ions held in suspension by centrifugal and electric forces, the cooling and other features. 39 refs., 8 figs., 2 tabs.
Date:
August 25, 1989
Creator:
Glendenning, N.K.
Object Type:
Article
System:
The UNT Digital Library
Mirror theory applied to toroidal systems
Central features of a mirror plasma are strong departures from Maxwellian distribution functions, ambipolar potentials and densities which vary along a field line, and losses, and the mirror field itself. To examine these features, mirror theorists have developed analytical and numerical techniques to solve the Fokker-Planck equation, evaluate the potentials consistent with the resulting distribution functions, and assess the microstability of these distributions. Various combinations of mirror-plasma fetures are present and important in toroidal plasmas as well, particularly in the edge region and in plasmas with strong r.f. heating. In this paper we survey problems in toroidal plasmas where mirror theory and computational techniques are applicable, and discuss in more detail three specific examples: calculation of the toroidal generalization of the Spitzer-Haerm distribution function (from which trapped-particle effects on current drive can be calculated), evaluation of the nonuniform potential and density set up by pulsed electron-cyclotron heating, and calculation of steady-state distribution functions in the presence of strong r.f. heating and collisions. 37 refs., 3 figs.
Date:
August 25, 1987
Creator:
Cohen, R.H.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0154.0411]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Volunteer Jan Davis aids Eric Kammerlocher at Will Rogers World Airport's traveler's Aid booth."
Date:
August 25, 1984
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0158.0213]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Del City's new $1,146,000 garbage and trash incinerator plant will dispose of up to 100 tons of material a day without much noise or odor or smoke, reducing the waste material to only about 5 percent of its original volume in the form of ash."
Date:
August 25, 1980
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0057]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Maybelle Conger, the woman many Central High School graduates consider the embodiment of the school's spirit has won the Heritage Award, the highest honor of the school alumni association."
Date:
August 25, 1984
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0136.0490]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
August 25, 1981
Creator:
Lynn, Renee
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0316B.0228]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
August 25, 1987
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0312B.0056]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "It's over at least 12-year school careers."
Date:
August 25, 1981
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Measured resolutions of the Arc and Linac BPM systems
The 6'' long final focus beam position monitors (short FF BPM's are longer, thus deliver more signal after a 15 nanosecond filter, than either the Linac or Arc monitors. The purpose of this note is to compare the resolution of the Arc vs Linac electronics when applied to a short FF 2'' diameter BPM. A method of calibrating the Arc modules is also tested and briefly discussed. The range of each DAC setting to minimize digitization error is also calculated.
Date:
August 25, 1986
Creator:
Pappas, D. & Tentindo, S.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0261.0520]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Ebony Hill, 5, can't resist taking a peek inside Hawthorne Elementary, NW 15 and Youngs."
Date:
August 25, 1981
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0267.0890]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "John Howard says the 10-foot palm in his yard at 5900 SW 22 causes quite a few lookers and even some who stop to ask questions."
Date:
August 25, 1983
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0325.0234]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Sampling delicious onion sandwiches are Al Keller, Helen Reinheimer and Dick Dugan in the party house at the first annual 'Sting' party."
Date:
August 25, 1980
Creator:
Hammett, Kate
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0316B.0225]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Robert Grady Johnson, front , and Jay Wesley Neill were back in court Tuesday in Lawton."
Date:
August 25, 1987
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0322.0100]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mickey Kalman uses a personal computer to keep track of the 28 programs sponsored by the City Rescue Mission."
Date:
August 25, 1988
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0231.0162]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Margaret and Alvie groves enjoy a party given by their children in honor of their anniversary."
Date:
August 25, 1987
Creator:
Cook, J. Don
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0272.0305]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Lee Garland, Allyne Hyroop, Joy Garland and Gilbert Hyroop get together at party given for their children."
Date:
August 25, 1984
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0348.0139]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The chute of one of four skydivers who climbed the 1,600-foot KTVY television tower opens Tuesday after a jump. Tuesday's jumps were reported by Bernie Martin, who works for Gaylord Farms. All four jumpers got into a green van and left before he could reach them. Leon Harris, chief engineer of WKY radio, said the parachutists were lucky they were not "literally cremated" on the tower because of the power going through it."
Date:
August 25, 1981
Creator:
Beuhner, Jeff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0227.0331]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Having dinner together are Susie Graves, Debbie Symes and Bill Hart, from left."
Date:
August 25, 1984
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0254.0311]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Scott Hearon, city"
Date:
August 25, 1982
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0264.0432]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "April Hoskins, 5, gives full attention to teacher."
Date:
August 25, 1981
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0223.0287]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Arletta Bowlin holds the 30-year-old Davy Crockett doll she made for one of her sons."
Date:
August 25, 1985
Creator:
McGee, Minerva
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0251.0377]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Brian Harvey"
Date:
August 25, 1981
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History