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Raft River condenser-tube examination

Description: In the program of development of a water treatment for the 5 MW Raft River power plants' carbon steel heat rejection system, four carbon steel tubes were analyzed in this batch. The results of visual and scanning electron microscope examination of the tubes are presented. (MHR)
Date: April 3, 1981
Creator: Suciu, D. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Review of the margins for ASME code fatigue design curve - effects of surface roughness and material variability.

Description: The ASME Boiler and Pressure Vessel Code provides rules for the construction of nuclear power plant components. The Code specifies fatigue design curves for structural materials. However, the effects of light water reactor (LWR) coolant environments are not explicitly addressed by the Code design curves. Existing fatigue strain-vs.-life ({var_epsilon}-N) data illustrate potentially significant effects of LWR coolant environments on the fatigue resistance of pressure vessel and piping steels. Th… more
Date: October 3, 2003
Creator: Chopra, O. K.; Shack, W. J. & Technology, Energy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Explosively driven facture and fragmentation of metal cylinders and rings

Description: Cylinders and rings fabricated from AerMet{reg_sign} 100 alloy and AISI 1018 steel have been explosively driven to fragmentation in order to determine the fracture strains for these materials under plane strain and uniaxial stress conditions. The phenomena associated with the dynamic expansion and subsequent break up of the cylinders are monitored with high-speed diagnostics. In addition, complementary experiments are performed in which fragments from the explosively driven cylinder are recover… more
Date: January 3, 2007
Creator: Goto, D; Becker, R C; Orzechowski, T J; Springer, H K; Sunwoo, A J & Syn, C K
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Secondary Electron Yield Measurements and Groove Chambers Tests in the PEP-II Beam Line Straights Sections

Description: Beam instability caused by the electron cloud has been observed in positron and proton storage rings and it is expected to be a limiting factor in the performance of the positron Damping Ring (DR) of future Linear Colliders such as ILC and CLIC [1, 2]. In the Positron Low Energy Ring (LER) of the PEP-II accelerator, we have installed vacuum chambers with rectangular grooves in a straight magnetic-free section to test this promising possible electron cloud mitigation technique. We have also inst… more
Date: July 3, 2008
Creator: Pivi, M. T. F.; King, F.; Kirby, R. E.; Markiewicz, T; Raubenheimer, T. O.; Seeman, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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SQA(TM): Surface Quality Assured Steel Bar Program

Description: OG Technologies, Inc. (OGT) has led this SQA (Surface Quality Assured Steel Bar) program to solve the major surface quality problems plaguing the US special quality steel bars and rods industry and their customers, based on crosscutting sensors and controls technologies. Surface defects in steel formed in a hot rolling process are one of the most common quality issues faced by the American steel industry, accounting for roughly 50% of the rejects or 2.5% of the total shipment. Unlike other prob… more
Date: March 3, 2009
Creator: Chang, Tzyy-Shuh; Shi, Jianjun & Zhou, Shiyu
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

OIT Wireless Telemetry for Industrial Applications

Description: The need for advanced wireless technology has been identified in the National Research Council publication (1) ''Manufacturing Process Controls for the Industries of the Future as a Critical Technology for the Future''. The deployment challenges to be overcome in order for wireless to be a viable option include: (1) eliminating interference (assuring reliable communications); (2) easing the deployment of intelligent, wireless sensors; (3) developing reliable networks (robust architectures); (4)… more
Date: September 3, 2002
Creator: Manges, WW
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SPENT FUEL MANAGEMENT AT THE SAVANNAH RIVER SITE

Description: Spent nuclear fuels are received from reactor sites around the world and are being stored in the L-Basin at the Savannah River Site (SRS) in Aiken, South Carolina. The predominant fuel types are research reactor fuel with aluminum-alloy cladding and aluminum-based fuel. Other fuel materials include stainless steel and Zircaloy cladding with uranium oxide fuel. Chemistry control and corrosion surveillance programs have been established and upgraded since the early 1990's to minimize corrosion de… more
Date: November 3, 2007
Creator: Vormelker, P; Robert Sindelar, R & Richard Deible, R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Neutron-Absorbing Coatings for Safe Storage of Fissile Materials with Enhanced Shielding & Criticality Safety

Description: Neutron-absorbing Fe-based amorphous-metal coatings have been developed that are more corrosion resistant than other criticality-control materials, including Al-B{sub 4}C composites, borated stainless steels, and Ni-Cr-Mo-Gd alloys. The presence of relatively high concentration of boron in these coatings not only enhances its neutron-absorption capability, but also enables these coatings to exist in the amorphous state. Exceptional corrosion resistance has been achieved with these Fe-based amor… more
Date: July 3, 2007
Creator: Choi, J.; Farmer, J.; Lee, C.; Fischer, L.; Boussoufi, M.; Liu, B. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Direct Observations of Sigma Phase Formation in Duplex Stainless Steels using In Situ Synchrotron X-Ray Diffraction

Description: The formation and growth of sigma phase in 2205 duplex stainless steel was observed and measured in real time using synchrotron radiation during 10 hr isothermal heat treatments at temperatures between 700 C and 850 C. Sigma formed in near-equilibrium quantities during the isothermal holds, starting from a microstructure which contained a balanced mixture of metastable ferrite and austenite. In situ synchrotron diffraction continuously monitored the transformation, and these results were compar… more
Date: July 3, 2006
Creator: Elmer, J W; Palmer, T A & Specht, E D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Primary system temperature limits and transient mitigation

Description: Results of a study to determine the limiting temperature conditions in a large reactor system are presented. The study considers a sodium-cooled breeder reactor system having a loop-type primary system configuration. A temperature range of 930 to 1050/sup 0/F in reactor outlet temperature is covered. Significant findings were that the use of the materials for the 930/sup 0/F reference design, i.e., a core material of 20% cold-worked 316 stainless steel, a primary piping material of 316SS, and a… more
Date: October 3, 1978
Creator: Drucker, G. S. & Bost, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiation Resistant Hts Quadrupoles for Ria.

Description: Extremely high radiation, levels with accumulated doses comparable to those in nuclear reactors than in accelerators, and very high heat loads ({approx}15 kw) make the quadrupole magnets in the fragment separator one of the most challenging elements of the proposed Rare Isotope Accelerator (RIA). Removing large heat loads, protecting the superconducting coils against quenching, the long term survivability of magnet components, and in particular, insulation that can retain its functionality in s… more
Date: October 3, 2004
Creator: Gupta, R.; Anerella, M.; Harrison, M. & Al., Et
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Laser Welding and Post Weld Treatment of Modified 9cr-1movnb Steel.

Description: Laser welding and post weld laser treatment of modified 9Cr-1MoVNb steels (Grade P91) were performed in this preliminary study to investigate the feasibility of using laser welding process as a potential alternative to arc welding methods for solving the Type IV cracking problem in P91 steel welds. The mechanical and metallurgical testing of the pulsed Nd:YAG laser-welded samples shows the following conclusions: (1) both bead-on-plate and circumferential butt welds made by a pulsed Nd:YAG laser… more
Date: April 3, 2012
Creator: Xu, Z. (Nuclear Engineering Division)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

D0 Silicon Upgrade: West End Assembly Hall Platform Design Calculations

Description: This engineering note documents design calculations done for the bayonet feed can platform installed at the far west end of the assembly hall. The platform is mounted off of a cast concrete wall directly south of where the shielding block wall is stacked. A summary of the loading, reaction forces and stresses is shown on the page 3. As can be seen, the calculated stresses are very small, maximum value = 2540 psi. The material used is structural steel tubing, ASTM A500 Gr. B, with a minimum yiel… more
Date: January 3, 1996
Creator: Rucinski, Russ
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DEMONSTRATION OF MIXING AND TRANSFERRING SETTLING COHESIVE SLURRY SIMULANTS IN THE AY-102 TANK

Description: In support of Hanford's feed delivery of high level waste (HLW) to the Waste Treatment and Immobilization Plant (WTP), pilot-scale testing and demonstrations with simulants containing cohesive particles were performed as a joint collaboration between Savannah River National Laboratory (SRNL) and the Pacific Northwest National Laboratory (PNNL) staff. The objective of the demonstrations was to determine the impact that cohesive particle interactions in the simulants, and the resulting non-Newton… more
Date: January 3, 2012
Creator: Adamson, D. & Gauglitz, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of Advanced Wear and Corrosion Resistant Systems Through Laser Surface Alloying and Materials Simulations

Description: Laser surfacing in the form of cladding, alloying, and modifications are gaining widespread use because of its ability to provide high deposition rates, low thermal distortion, and refined microstructure due to high solidification rates. Because of these advantages, laser surface alloying is considered a prime candidate for producing ultra-hard coatings through the establishment or in situ formation of composite structures. Therefore, a program was conducted by the Applied Research Laboratory, … more
Date: May 3, 2007
Creator: Martukanitz, R. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tecnetium-99 Behavior in Savannah River Site High Level Waste Sludges During Waste Processing

Description: This paper presents results of a study of the behavior of technetium-99 (Tc-99) during high level waste (HLW) processing operations at Savannah River Site (SRS). Its behavior during HLW processing is important to understand because Tc-99 can fractionate in the waste and appear in both the sludge and the salt tanks at SRS. It can also be soluble in groundwaters and thus is an important radionuclide that may dictate how much waste has to be removed from a tank to prepare it for permanent closure.… more
Date: January 3, 2006
Creator: BIBLER, N. E.; Fellinger, T. L. & Hobbs, D. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Modified Rate-Theory Predictions in Comparison to Microstructural Data

Description: Standard rate theory methods have recently been combined with experimental microstructures to successfully reproduce measured swelling behavior in ternary steels around 400 C. Fit parameters have reasonable values except possibly for the recombination radius, R{sub c}, which can be larger than expected. Numerical simulations of void nucleation and growth reveal the importance additional recombination processes at unstable clusters. Such extra recombination may reduce the range of possible value… more
Date: November 3, 2003
Creator: Surh, M. P.; Okita, T. & Wolfer, W. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

HOLDUP MEASUREMENTS FOR VISUAL EXAMINATION GLOVEBOXES AT THE SAVANNAH RIVER SITE

Description: Visual Examination (VE) gloveboxes are used at the Savannah River Site (SRS) to remediate transuranic waste (TRU) drums. Noncompliant items are removed before the drums undergo further characterization in preparation for shipment to the Waste Isolation Pilot Plant (WIPP). Maintaining the flow of drums through the remediation process is critical to the program's seven-days-per-week operation. Conservative assumptions are used to ensure that glovebox contamination from this continual operation is… more
Date: May 3, 2006
Creator: Sigg, R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Sagebrush Flat Wildlife Area 2008 Annual Report.

Description: The Sagebrush Flat Wildlife Area is a 12,718 acre complex located in Douglas County, Washington. Four distinct management units make up the area: Bridgeport, Chester Butte, Dormaier and Sagebrush Flat. The four Units are located across a wide geographic area within Douglas County. The Units are situated roughly along a north/south line from Bridgeport in the north to the Douglas/Grant county line in the south, 60 miles away. The wildlife area was established to conserve and enhance shrubsteppe … more
Date: November 3, 2008
Creator: Peterson, Dan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tensile-property characterization of thermally aged cast stainless steels.

Description: The effect of thermal aging on tensile properties of cast stainless steels during service in light water reactors has been evaluated. Tensile data for several experimental and commercial heats of cast stainless steels are presented. Thermal aging increases the tensile strength of these steels. The high-C Mo-bearing CF-8M steels are more susceptible to thermal aging than the Mo-free CF-3 or CF-8 steels. A procedure and correlations are presented for predicting the change in tensile flow and yiel… more
Date: March 3, 1994
Creator: Michaud, W. F.; Toben, P. T.; Soppet, W. K.; Chopra, O. K. & Technology, Energy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radionuclide Inventory Management at the New 100 MeV Isotope Production Facility at LANL

Description: The Isotope Production Facility (IPF) at Los Alamos is operated on the authorization basis of a radiological facility with an inventory limit of a Category 3 Nuclear Facility. For the commissioning of IPF, a ''dummy'' target stack containing Zn, Nb and Al disks, and a ''prototype'' stack were irradiated with a proton beam. The ''prototype'' stack contained two pressed RbCl disks, encapsulated in stainless steel, and a Ga metal target. Typical ''prototype'' stack beam parameters were 88.9 {micro… more
Date: October 3, 2004
Creator: Fassbender, M. E.; Phillips, D. R.; Nortier, F. M.; Trellue, H. R.; Hamilton, V. T.; Heaton, R. C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Erosion Modeling Analysis For DWPF MFT/SME Tanks

Description: This report presents the application of computational fluid dynamics (CFD) methods to qualitative estimate of the erosion phenomena expected in the actual Slurry Mixer Evaporator (SME) and MFT (Melter Feed Tank) process facilities by calculating erosion drivers. Using the transport equations governing the slurry flow, two erosion mechanisms were considered to evaluate high erosion sites and to investigate the primary cause of erosion damage for the modeling domain representative of the actual m… more
Date: May 3, 2004
Creator: LEE, SI
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Process Hood Stand Support Steel

Description: This package is written to comply with EN-6-035-00 for upgrade dedication of commercial grade items (CGI). The SNF-5953 CGI package provides the Technical evaluation to identify the critical characteristics and the acceptance criteria associated with the safety function of the Hood Stand Support Steel. Completion of the technical and quality requirements identified in the dedication package will provide enough data to be reasonably assured that CGI Hood Stand Support Steel will perform its SC f… more
Date: April 3, 2000
Creator: Van Katwijk, Carl
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Whitey Gauge and Root Valves (VPS)

Description: These valves are 1/2 inch ball valves fabricated of 316 stainless steel: Packing is TFE (standard). They are used as isolation valves for pressure instrumentation in the Vacuum Pumping and Helium System.
Date: September 3, 2000
Creator: MISKA, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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