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CORROSION OF LEAD SHIELDING IN NUCLEAR MATERIALS PACKAGES

Description: Inspection of United States-Department of Energy (US-DOE) model 9975 nuclear materials shipping package revealed corrosion of the lead shielding that was induced by off-gas constituents from organic components in the package. Experiments were performed to determine the corrosion rate of lead when exposed to off-gas or degradation products of these organic materials. The results showed that the room temperature vulcanizing (RTV) sealant was the most corrosive organic species used in the construc… more
Date: July 18, 2008
Creator: Subramanian, K; Kerry Dunn, K & Joseph Murphy, J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

PROGRESS IN HANFORDS DOUBLE SHELL TANK (DST) INTEGRITY PROJECT

Description: The U.S. Department of Energy's Office of River Protection has an extensive integrity assessment program for the Hanford Site Double-Shell Tank System. The DOE Orders and environmental protection regulations provide the guidelines for the activities used to inspect and maintain 28 double-shell tanks (DSTs), the waste evaporator, and ancillary equipment that compose this system. This program has been reviewed by oversight and regulatory bodies and found to comply with the established guidelines.… more
Date: January 22, 2008
Creator: HS, BERMAN
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of Solar Grade (SoG) Silicon

Description: The rapid growth of the photovoltaics (PV) industry is threatened by the ongoing shortage of suitable solar grade (SoG) silicon. Until 2004, the PV industry relied on the off spec polysilicon from the electronics industry for feedstock. The rapid growth of PV meant that the demand for SoG silicon predictably surpassed this supply. The long-term prospects for PV are very bright as costs have come down, and efficiencies and economies of scale make PV generated electricity ever more competitive wi… more
Date: January 18, 2008
Creator: Joyce, David B & Schmid, Frederick
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Improved Method of Manufacturing Corrugated Boxes: Lateral Corrugator

Description: Paper physicists have known that a corrugated box constructed from outer liner sheets having a predominant fiber orientation aligned with the corrugating flute direction would have higher stiffness and crush resistance (per unit of fiber weight) than the conventional box construction. Such increased performance per unit of fiber weight could result in fiber reduction and energy savings for boxes having equivalent performance specifications. The goal of this project was to develop and demonstrat… more
Date: December 18, 2008
Creator: Murray, Frank C.; Popil, Roman & Shaepe, Michael
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report: Radiation-magnetohydrodynamic evolution and instability of conductors driven by megagauss magnetic fields

Description: We are pleased to report important progress in experimentally characterizing and numerically modeling the transformation into plasma of walls subjected to pulsed megagauss magnetic fields. Understanding this is important to Magnetized Target Fusion (MTF) because an important limitation to the metal liner approach to MTF comes from the strong eddy current heating on the surface of the metal liner. This has intriguing non-linear aspects when the magnetic field is in the megagauss regime as needed… more
Date: October 22, 2008
Creator: Bauer, Bruno, S. & Siemon, Richard, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

AN ASSESSMENT OF THE SERVICE HISTORY AND CORROSION SUSCEPTIBILITY OF TYPE IV WASTE TANKS

Description: Type IV waste tanks were designed and built to store waste that does not require auxiliary cooling. Each Type IV tank is a single-shell tank constructed of a steel-lined pre-stressed concrete tank in the form of a vertical cylinder with a concrete domed roof. There are four such tanks in F-area, Tanks 17-20F, and four in H-Area, Tanks 21-24H. Leak sites were discovered in the liners for Tanks 19 and 20F in the 1980's. Although these leaks were visually observed, the investigation to determine t… more
Date: September 18, 2008
Creator: Wiersma, B
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

FAILURE ANALYSIS: WASTEWATER DRUM BULGING

Description: A 55 gallon wastewater drum lid was found to be bulged during storage in a remote area. Drum samples were obtained for analysis. The interior surface of these samples revealed blistering and holes in the epoxy phenolic drum liner and corrosion of the carbon steel drum. It is suspected that osmotic pressure drove permeation of the water through the epoxy phenolic coating which was weakened from exposure to low pH water. The coating failed at locations throughout the drum interior. Subsequent cor… more
Date: September 15, 2008
Creator: Vormelker, P
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Advanced Mud System for Microhole Coiled Tubing Drilling

Description: An advanced mud system was designed and key components were built that augment a coiled tubing drilling (CTD) rig that is designed specifically to drill microholes (less than 4-inch diameter) with advanced drilling techniques. The mud system was tailored to the hydraulics of the hole geometries and rig characteristics required for microholes and is capable of mixing and circulating mud and removing solids while being self contained and having zero discharge capability. Key components of this sy… more
Date: December 1, 2008
Creator: Oglesby, Kenneth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Natural Gas Reciprocating Engine: Parasitic Loss Control through Surface Modification

Description: This report presents results of our investigation on parasitic loss control through surface modification in reciprocating engine. In order to achieve the objectives several experimental and corresponding analytical models were designed and developed to corroborate our results. Four different test rigs were designed and developed to simulate the contact between the piston ring and cylinder liner (PRCL) contact. The Reciprocating Piston Test Rig (RPTR) is a novel suspended liner test apparatus wh… more
Date: December 31, 2008
Creator: Sadeghi, Farshid & Wang, Chin-Pei
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of Pu-238 heat source granule containment

Description: The Milliwatt Radioisotopic Thermoelectric Generator (RTG) provides power for permissive-action links. These nuclear batteries convert thermal energy to electrical energy using a doped silicon-germanium thermopile. The thermal energy is provided by a heat source made of {sup 238}Pu, in the form of {sup 238}PuO{sub 2} granules. The granules are contained in 3 layers of encapsulation. A thin T-111 liner surrounds the {sup 238}PuO{sub 2} granules and protects the second layer (strength member) fro… more
Date: January 1, 2008
Creator: Richardson Ii, P D; Thronas, D L; Romero, J P; Sandoval, F E; Neuman, A D & Duncan, W S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Siderocalin/Enterobactin Interaction: A Link between Mammalian Immunity and Bacterial Iron Transport

Description: The siderophore enterobactin (Ent) is produced by enteric bacteria to mediate iron uptake. Ent scavenges iron and is taken up by the bacteria as the highly stable ferric complex [Fe{sup III}(Ent)]{sup 3-}. This complex is also a specific target of the mammalian innate immune system protein, Siderocalin (Scn), which acts as an anti-bacterial agent by specifically sequestering siderophores and their ferric complexes during infection. Recent literature suggesting that Scn may also be involved in c… more
Date: May 12, 2008
Creator: Meux, Susan C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Advanced Materials for Mercury 50 Gas Turbine Combustion System

Description: Solar Turbines Incorporated (Solar), under cooperative agreement number DE-FC26-0CH11049, has conducted development activities to improve the durability of the Mercury 50 combustion system to 30,000 hours life and reduced life cycle costs. This project is part of Advanced Materials in the Advanced Industrial Gas Turbines program in DOE's Office of Distributed Energy. The targeted development engine was the Mercury{trademark} 50 gas turbine, which was developed by Solar under the DOE Advanced Tu… more
Date: September 30, 2008
Creator: Price, Jeffrey
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a model for predicting transient hydrogen venting in 55-gallon drums

Description: Remote drum venting was performed on a population of unvented high activity drums (HAD) in the range of 63 to 435 plutonium equivalent Curies (PEC). These 55-gallon Transuranic (TRU) drums will eventually be shipped to the Waste Isolation Pilot Plant (WIPP). As a part of this process, the development of a calculational model was required to predict the transient hydrogen concentration response of the head space and polyethylene liner (if present) within the 55-gallon drum. The drum and liner we… more
Date: January 1, 2008
Creator: Apperson, Jason W.; Clemmons, James S.; Garcia, Michael D.; Sur, John C.; Zhang, Duan Z. & Romero, Michael J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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