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Beta and gamma dose calculations for PWR and BWR containments

Description: Analyses of gamma and beta dose in selected regions in PWR and BWR containment buildings have been performed for a range of fission product releases from selected severe accidents. The objective of this study was to determine the radiation dose that safety-related equipment could experience during the selected severe accident sequences. The resulting dose calculations demonstrate the extent to which design basis accident qualified equipment could also be qualified for the severe accident environments. Surry was chosen as the representative PWR plant while Peach Bottom was selected to represent BWRs. Battelle Columbus Laboratory performed the source term release analyses. The AB epsilon scenario (an intermediate to large LOCA with failure to recover onsite or offsite electrical power) was selected as the base case Surry accident, and the AE scenario (a large break LOCA with one initiating event and a combination of failures in two emergency cooling systems) was selected as the base case Peach Bottom accident. Radionuclide release was bounded for both scenarios by including spray operation and arrested sequences as variations of the base scenarios. Sandia National Laboratories used the source terms to calculate dose to selected containment regions. Scenarios with sprays operational resulted in a total dose comparable to that (2.20 /times/ 10/sup 8/ rads) used in current equipment qualification testing. The base case scenarios resulted in some calculated doses roughly an order of magnitude above the current 2.20 /times/ 10/sup 8/ rad equipment qualification test region. 8 refs., 23 figs., 12 tabs.
Date: July 1, 1989
Creator: King, D.B.
Partner: UNT Libraries Government Documents Department

Free vibration analysis of a steam generator tube bundle with and without lateral support. [PWR]

Description: The vibrational modes and frequency characteristics of a pressurized water reactor (PWR) steam generator tube bundle assembly with and without lateral support in a fluid environment are analyzed. The idealized half-model was constructed using the SAP-IV finite element code. Free vibration analyses were performed for an in-air case and a submerged in-water case, each with different constraint conditions at steam generator tube bundle assembly support plates 10 and 11. These constraint conditions included having both support plates free, having both support plates fixed, and having support plate 11 free while support plate 10 was fixed. It was found that as the support plate constraints were removed, the frequency range for each case increased significantly.
Date: April 1, 1979
Creator: King, D.M.
Partner: UNT Libraries Government Documents Department

FFTF irradiation of fracture mechanics specimens for out-of-core structures

Description: The National Program Plan has established data requirements for out-of-core structures for FBRs. Significant FFTF irradiation space with moderate gamma heating levels is required to irradiate relatively large fracture mechanics specimens to total neutron fluences ranging between 5 x 10/sup 21/ and 5 x 10/sup 22/ n/cm/sup 2/ and temperatures which range between 400/sup 0/C (750/sup 0/F) and 650/sup 0/C (1200/sup 0/F). Priority 1 data on stainless steel welds requires a test volume of 7443 cm/sup 3/ (454 in/sup 3/). Priority 2 data on 304 and 316 SS and Inconel 718 materials and Inconel 718 welds requires 2760 cm/sup 3/ (168 in/sup 3/). Priority 3 data on stainless steels, other nickel-base alloys, and ferritics requires 33,118 cm/sup 3/ (2021 in/sup 3/). Priority 4 data at elevated temperatures on stainless steels, other nickel-base alloys and ferritics requires 69,182 cm/sup 3/ (4221 in/sup 3/).
Date: September 1, 1978
Creator: King, D.C.
Partner: UNT Libraries Government Documents Department

Radioisotope thermoelectric generator transportation system subsystem 143 software development plan

Description: This plan describes the activities to be performed and the controls to be applied to the process of specifying, developing, and qualifying the data acquisition software for the Radioisotope Thermoelectric Generator (RTG) Transportation System Subsystem 143 Instrumentation and Data Acquisition System (IDAS). This plan will serve as a software quality assurance plan, a verification and validation (V and V) plan, and a configuration management plan.
Date: November 10, 1994
Creator: King, D.A.
Partner: UNT Libraries Government Documents Department

Nonradial pulsations of delta Scuti stars

Description: An improved stellar model with a detailed composition structure is used to look at the nonradial behavior of a star near the region in the H-R diagram where the delta Scuti variables are found. Satisfactory solutions are obtained to the linear nonadiabatic equations. The newly calculated evolution models will be used in the future to study the pulsational stability of this class of stars. 4 refs., 2 figs., 1 tab.
Date: August 11, 1986
Creator: King, D.S. & Cox, A.N.
Partner: UNT Libraries Government Documents Department

Effects of Surface Composition on CdTe/CdS Device Performance

Description: The atomic composition of the back surface of the CdTe layer in a CdTe/CdS photovoltiac (PV) device has a significant influence on the quality of the electrical contact to this layer. This paper reports the results of a systematic study that correlates the composition of the back surface with pre-contact processing and device performance.
Date: January 1, 2000
Creator: Levi, D.; Albin, D. & King, D.
Partner: UNT Libraries Government Documents Department

Alternative institutional vehicles for geothermal district heating

Description: The attributes of various institutional entities which might participate in various phases of geothermal heating applications are described. Public entities considered include cities, counties, and special districts. Private entities discussed include cooperative organizations and non-member-owned private enterprises. The powers, authority and manner of operation of each of the institutional entities are reviewed. Some of the public utility regulatory implications which may affect choices among available alternatives are considered. (MHR)
Date: June 1, 1980
Creator: Bressler, S.; Gardner, T.C.; King, D. & Nimmons, J.T.
Partner: UNT Libraries Government Documents Department

Characterizing (rating) the performance of large photovoltaic arrays for all operating conditions

Description: A new method has been developed for characterizing the electrical performance of photovoltaic arrays. The method provides both a ``rating`` at standard reporting conditions and a rigorous yet straightforward model for predicting array performance at all operating conditions. For the first time, the performance model handles the influences of irradiance, module temperature, solar spectrum, solar angle-of-incidence, and temperature coefficients, in a practical way. Validity of the procedure was confirmed during field testing of a 25-kW array recently installed by Arizona Public Service Co. on Carol Spring Mountain (which powers microwave, ceullular phone, and TV communictions equipment). This paper describes the characterization procedure, measured array performance, and the predictive model.
Date: June 1, 1996
Creator: King, D.L. & Eckert, P.E.
Partner: UNT Libraries Government Documents Department

Scalable Parallel Utopia

Description: This contribution proposes a 128 bit wide interface structure clocked at approximately 80 MHz that will operate at 10 Gbps as a strawman for a 0C192C Utopia Specification. In addition, the concept of scalable width of data transfers in order to maintain manageably low clock rates is proposed.
Date: October 1, 1998
Creator: King, D. & Pierson, L.
Partner: UNT Libraries Government Documents Department

Analysis techniques used on field degraded photovoltaic modules

Description: Sandia National Laboratory`s PV System Components Department performs comprehensive failure analysis of photovoltaic modules after extended field exposure at various sites around the world. A full spectrum of analytical techniques are used to help identify the causes of degradation. The techniques are used to make solder fatigue life predictions for PV concentrator modules, identify cell damage or current mismatch, and measure the adhesive strength of the module encapsulant.
Date: September 1, 1995
Creator: Hund, T.D. & King, D.L.
Partner: UNT Libraries Government Documents Department

The cost of wetland creation and restoration. Final report

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 and other available databases to develop a secondary source database. Cases in both databases were carefully analyzed and a set of baseline cost per acre estimates were developed for wetland creation, restoration, and enhancement. Observations of costs varied widely, ranging from $5 per acre to $1.5 million per acre. Differences in cost were related to the target wetland type, and to site-specific and project-specific factors that affected the preconstruction, construction, and post-construction tasks necessary to carry out each particular project. Project-specific and site-specific factors had a much larger effect on project costs than wetland type for non-agricultural projects. Costs of wetland creation and restoration were also shown to differ by region, but not by as much as expected, and in response to the regulatory context. The costs of wetland creation, restoration, and enhancement were also analyzed in a broader economic context through examination of the market for wetland mitigation services, and through the development of a framework for estimating compensation ratios-the number of acres of created, restored, or enhanced wetland required to compensate for an acre of lost natural wetland. The combination of per acre creation, restoration, and enhancement costs and the compensation ratio determine the overall mitigation costs associated with alternative mitigation strategies.
Date: August 1, 1995
Creator: King, D. & Bohlen, C.
Partner: UNT Libraries Government Documents Department

A summary of high-temperature electronics research and development

Description: Current and future needs in automative, aircraft, space, military, and well logging industries require operation of electronics at higher temperatures than today's accepted limit of 395 K. Without the availability of high-temperature electronics, many systems must operate under derated conditions or must accept severe mass penalties required by coolant systems to maintain electronic temperatures below critical levels. This paper presents ongoing research and development in the electronics community to bring high-temperature electronics to commercial realization. Much of this work was recently reviewed at the First International High-Temperature Electronics Conference held 16--20 June 1991 in Albuquerque, New Mexico. 4 refs., 1 tab.
Date: October 18, 1991
Creator: Thome, F. V. & King, D. B.
Partner: UNT Libraries Government Documents Department

Experimental optimization of an anisotropic etching process for random texturization of silicon solar cells

Description: A multifactor experimental investigation of silicon surface texturing was conducted in Sandia's Photovoltaic Device Fabrication Laboratory using aqueous potassium-hydroxide (KOH) solutions with isopropyl alcohol (IPA) added as a complexing agent. Czochralski, magnetic-Czochralski, and float-zone silicon wafers of different resistivities with both polished and lapped surfaces were included in the experiment. Process variables considered were solution temperature, time in solution, degree of mechanical mixing, KOH concentration, and IPA concentration. Using hemispherical reflectance as the primary gauge of success, process variables were identified that resulted in an effective surface texture with reflectance less than 12% prior to anti-reflection coating. Of particular interest was a low temperature (70 {degrees}C) process with less than 2% concentration of both KOH and IPA and wide process variable tolerances. 6 refs., 6 figs., 1 tab.
Date: January 1, 1991
Creator: King, D.L. & Buck, M.E.
Partner: UNT Libraries Government Documents Department

Masses and pulsations of BL Herculis variables

Description: From linear results, the masses of BL Her variables must be nearer to 0.55 M /sub sun/ than 0.75 M /sub sun/ if the bump phase transition (resonance) is to be located anywhere near the observed period range of 1./sup d/5 to 1./sup d/7. The nonlinear results are consistent with the Simon resonance concept, but demonstrate that light and velocity curve shapes are a nonlinear phenomenon that require nonlinear period ratios to display the resonances only in the narrow, observed range of 1./sup d/5 to 1./sup d/7. The mass near 0.55 M /sub sun/ is in good agreement with evolution calculations (Sweigart and Gross, 1976) and nonlinear pulsation studies of Carson, Stothers, and Vemury (1981) and Stothers (1981).
Date: January 1, 1981
Creator: Hodson, S.W.; Cox, A.N. & King, D.S.
Partner: UNT Libraries Government Documents Department

Overview of industry and utility decision criteria for participation in geothermal-heating applications

Description: An overview is presented of the results of five major surveys undertaken by the Institute among potential industrial users and public utilities in an effort to determine the geothermal heat market. The central findings of four studies are synthesized and some of their implications for future development are suggested. The findings and conclusions are summarized. (MHR)
Date: April 1, 1980
Creator: Bressler, S.E.; King, D. & Nimmons, J.T.
Partner: UNT Libraries Government Documents Department

Additional abstracts pertaining to seaplanes

Description: From Summary: "About 500 additional references pertaining to hydrodynamic design of seaplanes have been compiled, and the information is presented in the form of abstracts classified under six main headings:GENERAL INFORMATION, HYDROSTATICS, HYDRODYNAMICS, AERODYNAMICS, OPERATION, and RESEARCH. The compilation is an extension of NACA RM No. L6I13, entitled "Abstracts Pertaining to Seaplanes," by Jerold M. Bidwell and Douglas A. King. An author index and a subject index are included."
Date: March 9, 1948
Creator: Bidwell, J. M. & King, D. A.
Partner: UNT Libraries Government Documents Department

Fast Flux Test Facility loose-parts monitor

Description: This paper summarizes the development testing in progress at the FFTF to determine the effectiveness of high temperature microphones as acoustic monitors in the upper plenum of the FFTF. The specific goal of this testing is development of an automated loose parts monitor for the upper plenum. A description of the acoustic probe is included, as well as a discussion of the signal processing. A summary of the results to date is also given.
Date: February 1, 1982
Creator: Sloan, W.R.; King, D.C. & Robles, M.
Partner: UNT Libraries Government Documents Department

Full amplitude models of 15 day Cepheids

Description: Numerical models of Cepheids have been computed with a range of effective temperatures and compositions. The amplitudes increase if the helium abundance increases or if the effective temperature decreases. The latter effect is contrary to observational data. The models also exhibit velocity amplitudes which are much lower than those observed.
Date: January 1, 1980
Creator: Cogan, B.C.; Cox, A.N. & King, D.S.
Partner: UNT Libraries Government Documents Department

Nonlinear calculations for BL Her stars

Description: From the linear and nonlinear calculations it is evident that bumps occur in the velocity and light curves when there is a near resonance between ..pi../sub 0/ and ..pi../sub 2/. In addition, these resonance bumps do not seem to depend on the limit cycle amplitude, and cannot be attributed to the surface shock encountered when models are driven to excessively high amplitudes.
Date: January 1, 1980
Creator: Hodson, S.W.; Cox, A.N. & King, D.S.
Partner: UNT Libraries Government Documents Department

Triple mode Cepheid masses

Description: Cepheid wind enrichment from the surface and the instability mixing below the convection zones compete to give much deeper large Y homogeneous and transition layers than previously thought. The theoretical model data and derived masses are presented. It is shown that if the helium enrichment goes to 250,000 K (l-q = 2 x 10/sup -4/) with a transition zone to 300,000 K (1-q = 5 x 10/sup -4/) for AC And, its periods can be explained. For TU Cas a very unlikely model is required to give the three periods reported previously. 28 references. (JFP)
Date: January 1, 1978
Creator: King, D.S.; Cox, A.N. & Hodson, S.W.
Partner: UNT Libraries Government Documents Department