293 Matching Results

Search Results

Advanced search parameters have been applied.
in publisher: "Idaho National Laboratory"  
Results: 1 - 24 next
open access

Continual Non-Condensable Gas Removal Testing -- Performance and Lessons Learned

Description: The operating experience and plant benefit analysis of a membrane-based continuous non-condensable gas (NCG) removal system is discussed. Results from testing at the Mammoth Pacific (Ormat) geothermal plant provide the basis for the benefit analysis.
Date: September 1, 2005
Creator: Mohr, Charles & Mines, Greg
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

American Material Culture: Investigating a World War II Trash Dump

Description: The Idaho National Laboratory: An Historical Trash Trove Historians and archaeologists love trash, the older the better. Sometimes these researchers find their passion in unexpected places. In this presentation, the treasures found in a large historic dump that lies relatively untouched in the middle of the Idaho National Laboratory (INL) will be described. The U.S. military used the central portion of the INL as one of only six naval proving grounds during World War II. They dumped trash in dr… more
Date: October 1, 2005
Creator: Braun, Julie
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Electrorefining Experience For Pyrochemical Reprocessing of Spent EBR-II Driver Fuel

Description: Pyrochemical processing has been implemented for the treatment of spent fuel from the Experimental Breeder Reactor-II (EBR-II) at Idaho National Laboratory since 1996. This report summarizes technical advancements made in electrorefining of spent EBR-II driver fuel in the Mk-IV electrorefiner since the pyrochemical processing was integrated into the AFCI program in 2002. The significant advancements include improving uranium dissolution and noble metal retention from chopped fuel segments, incr… more
Date: October 1, 2005
Creator: Li, S. X.; Johnson, T. A.; Westphal, B. R.; Goff, K. M. & Benedict, R. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Simplified Expert Elicitation Procedure for Risk Assessment of Operating Events

Description: This report describes a simplified, tractable, and usable procedure within the US Nuclear Regulator Commission (NRC) for seeking expert opinion and judgment. The NRC has increased efforts to document the reliability and risk of nuclear power plants (NPPs) through Probabilistic Risk Assessment (PRA) and Human Reliability Analysis (HRA) models. The Significance Determination Process (SDP) and Accident Sequence Precursor (ASP) programs at the NRC utilize expert judgment on the probability of failu… more
Date: June 1, 2005
Creator: Boring, Ronald L.; Gertman, David; Joe, Jeffrey; Marble, Julie; Galyean, William; Blackwood, Larry et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

In-vessel Retention Strategy for High Power Reactors - K-INERI Final Report (includes SBLB Test Results for Task 3 on External Reactor Vessel Cooling (ERVC) Boiling Data and CHF Enhancement Correlations)

Description: In-vessel retention (IVR) of core melt is a key severe accident management strategy adopted by some operating nuclear power plants and proposed for some advanced light water reactors (ALWRs). If there were inadequate cooling during a reactor accident, a significant amount of core material could become molten and relocate to the lower head of the reactor vessel, as happened in the Three Mile Island Unit 2 (TMI-2) accident. If it is possible to ensure that the vessel head remains intact so that r… more
Date: January 1, 2005
Creator: Cheung, F. B.; Yang, J.; Dizon, M. B. & Rempe, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of Microbial Respirometry for Monitoring Natural Sulfide Abatement in Geothermal Cooling Tower Basins

Description: Geothermal plant operators are interested in investigating the ability of micro-organisms found in the cooling tower basin to metabolize and cycle sulfide to less toxic sulfur compounds. If the growth or activity of the organisms participating in sulfur-oxidation could be selectively enhanced, then hydrogen sulfide could be naturally abated in the cooling basin, substantially reducing the costs associated with the chemicals used for abatement. The use of respirometry has been proposed as a tech… more
Date: September 1, 2005
Creator: Pryfogle, Peter A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nutrient Cycling Study

Description: The particular goal of this study is to develop measurement techniques for understanding how consortia of organisms from geothermal facilities utilize sulfur and iron for metabolic activity; and in turn, what role that activity plays in initiating or promoting the development of a biofilm on plant substrates. Sulfur cycling is of interest because sulfur is produced in the resource. Iron is found in some of the steel formulations used in plant components and is also added as chemical treatment f… more
Date: September 1, 2005
Creator: Pryfogle, Peter A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biomechanics of Wheat/Barley Straw and Corn Stover

Description: The lack of understanding of the mechanical characteristics of cellulosic feedstocks is a limiting factor in economically collecting and processing crop residues, primarily wheat and barley stems and corn stover. Several testing methods, including compression, tension, and bend have been investigated to increase our understanding of the biomechanical behavior of cellulosic feedstocks. Biomechanical data from these tests can provide required input to numerical models and help advance harvesting,… more
Date: March 1, 2005
Creator: Wright, Christopher T.; Pryfogle, Peter A.; Stevens, Nathan A.; Steffler, Eric D.; Hess, J. Richard & Ulrich, Thomas H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Using Unmanned Aerial Vehicles to Assess Vegetative Cover in Sagebrush Steppe Ecosytstems

Description: The Idaho National Laboratory (INL), in conjunction with the University of Idaho, is evaluating novel approaches for using unmanned aerial vehicles (UAVs) as a quicker and safer method for monitoring biotic resources. Evaluating vegetative cover is an important factor in understanding the sustainability of many ecosystems. In assessing vegetative cover, methods that improve accuracy and cost efficiency could revolutionize how biotic resources are monitored on western federal lands. Sagebrush st… more
Date: September 1, 2005
Creator: Breckenridge, Robert P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Reliability Estimates for Power Supplies

Description: Failure rates for large power supplies at a fusion facility are critical knowledge needed to estimate availability of the facility or to set priorties for repairs and spare components. A study of the "failure to operate on demand" and "failure to continue to operate" failure rates has been performed for the large power supplies at DIII-D, which provide power to the magnet coils, the neutral beam injectors, the electron cyclotron heating systems, and the fast wave systems. When o… more
Date: September 1, 2005
Creator: Cadwallader, Lee C. & Petersen, Peter I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Attack Methodology Analysis: Emerging Trends in Computer-Based Attack Methodologies and Their Applicability to Control System Networks

Description: Threat characterization is a key component in evaluating the threat faced by control systems. Without a thorough understanding of the threat faced by critical infrastructure networks, adequate resources cannot be allocated or directed effectively to the defense of these systems. Traditional methods of threat analysis focus on identifying the capabilities and motivations of a specific attacker, assessing the value the adversary would place on targeted systems, and deploying defenses according to… more
Date: June 1, 2005
Creator: Rolston, Bri
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

HISTORICAL AMERICAN ENGINEERING RECORD - IDAHO NATIONAL ENGINEERING AND ENVIRONMENTAL LABORATORY, TEST AREA NORTH, HAER NO. ID-33-E

Description: Test Area North (TAN) was a site of the Aircraft Nuclear Propulsion (ANP) Project of the U.S. Air Force and the Atomic Energy Commission. Its Cold War mission was to develop a turbojet bomber propelled by nuclear power. The project was part of an arms race. Test activities took place in five areas at TAN. The Assembly & Maintenance area was a shop and hot cell complex. Nuclear tests ran at the Initial Engine Test area. Low-power test reactors operated at a third cluster. The fourth area was for… more
Date: February 1, 2005
Creator: Stacy, Susan & Gilbert, Hollie K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

US-CERT Control System Center Input/Output (I/O) Conceputal Design

Description: This document was prepared for the US-CERT Control Systems Center of the National Cyber Security Division (NCSD) of the Department of Homeland Security (DHS). DHS has been tasked under the Homeland Security Act of 2002 to coordinate the overall national effort to enhance the protection of the national critical infrastructure. Homeland Security Presidential Directive HSPD-7 directs the federal departments to identify and prioritize critical infrastructure and protect it from terrorist attack. Th… more
Date: February 1, 2005
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

PROOF OF CONCEPT FOR A HUMAN RELIABILITY ANALYSIS METHOD FOR HEURISTIC USABILITY EVALUATION OF SOFTWARE

Description: An ongoing issue within human-computer interaction (HCI) is the need for simplified or “discount” methods. The current economic slowdown has necessitated innovative methods that are results driven and cost effective. The myriad methods of design and usability are currently being cost-justified, and new techniques are actively being explored that meet current budgets and needs. Recent efforts in human reliability analysis (HRA) are highlighted by the ten-year development of the Standardized Plan… more
Date: September 1, 2005
Creator: Boring, Ronald L.; Gertman, David I.; Joe, Jeffrey C. & Marble, Julie L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Computation of Dancoff Factors for Fuel Elements Incorporating Randomly Packed TRISO Particles

Description: A new method for estimating the Dancoff factors in pebble beds has been developed and implemented within two computer codes. The first of these codes, INTRAPEB, is used to compute Dancoff factors for individual pebbles taking into account the random packing of TRISO particles within the fuel zone of the pebble and explicitly accounting for the finite geometry of the fuel kernels. The second code, PEBDAN, is used to compute the pebble-to-pebble contribution to the overall Dancoff factor. The lat… more
Date: January 1, 2005
Creator: Kloosterman, J. L. & Ougouag, Abderrafi M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vendor System Vulnerability Testing Test Plan

Description: The Idaho National Laboratory (INL) prepared this generic test plan to provide clients (vendors, end users, program sponsors, etc.) with a sense of the scope and depth of vulnerability testing performed at the INL’s Supervisory Control and Data Acquisition (SCADA) Test Bed and to serve as an example of such a plan. Although this test plan specifically addresses vulnerability testing of systems applied to the energy sector (electric/power transmission and distribution and oil and gas systems), i… more
Date: January 1, 2005
Creator: Davidson, James R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiographic Inspection of Fueled Clads

Description: Five general purpose heat source (GPHS) fueled clads were radiographically inspected at the Idaho National Laboratory (INL). The girth weld region of each clad had previously passed visual examination, ring gauge test, and leak test but showed “positive” indications on the ultrasonic (UT) test. Positive ultrasonic indications are allowable under certain weld conditions; radiographic inspection provides a secondary nonintrusive means of clad inspection and may confirm allowable anomalies from th… more
Date: April 1, 2005
Creator: Roney, Timothy J. & Wendt, Karen M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Overview of the Environmental and Water Resources Institute's "Guidelines For Integrated Water Resources Management" Project

Description: Integrated Water Resources Management is a systematic approach to optimizing our understanding, control and management of water resources within a basin to meet multiple objectives. Recognition of the need for integrating water resources within basins is not unique to the Environmental and Water Resources Institute’s Integrated Water Resources Management Task Committee. Many individuals, governments and other organizations have attempted to develop holistic water resources management programs. … more
Date: March 1, 2005
Creator: Sehlke, Gerald
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Architectural Advancements in RELAP5-3D

Description: As both the computer industry and field of nuclear science and engineering move forward, there is a need to improve the computing tools used in the nuclear industry to keep pace with these changes. By increasing the capability of the codes, the growing modeling needs of nuclear plant analysis will be met and advantage can be taken of more powerful computer languages and architecture. In the past eighteen months, improvements have been made to RELAP5-3D [1] for these reasons. These architectural… more
Date: November 1, 2005
Creator: Mesina, Dr. George L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Monte-Carlo Code (MCNP) Modeling of the Advanced Test Reactor Applicable to the Mixed Oxide (MOX) Test Irradiation

Description: Mixed oxide (MOX) test capsules prepared with weapons-derived plutonium have been irradiated to a burnup of 50 GWd/t. The MOX fuel was fabricated at Los Alamos National Laboratory by a master-mix process and has been irradiated in the Advanced Test Reactor (ATR) at the Idaho National Laboratory (INL). Previous withdrawals of the same fuel have occurred at 9, 21, 30, and 40 GWd/t. Oak Ridge National Laboratory (ORNL) manages this test series for the Department of Energy’s Fissile Materials Dispo… more
Date: July 1, 2005
Creator: Chang, G. S. & Pederson, R. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Microstructure and Mechanical Properties of Spray-Formed H13 Steel Tooling

Description: This paper presents results on the microstructure and hardness of spray-formed H13 (Fe-0.40C-5.00Cr-1.10V-1.30Mo (wt%)) tooling. There is very low porosity in both as-spray formed samples and aged samples. The microstructure in the as-spray-formed sample is characterized by primary carbides, acicular lower bainite, and a small amount of martensite and of retained austenite. Spray formed and aged tooling H13 has higher hardness values than those of H13 in conventional tooling. The experimental r… more
Date: February 1, 2005
Creator: Lin, Yaojun; McHugh, Kevin M.; Park, Young-Soo; Zhou, Yizhang & Lavernia, Enrique J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Inert Matrix Fuel Neutronic, Thermal-Hydraulic, and Transient Behavior in a Light Water Reactor

Description: Currently, commercial power reactors in the United States operate on a once-through or open cycle, with the spent nuclear fuel eventually destined for long-term storage in a geologic repository. Since the fissile and transuranic (TRU) elements in the spent nuclear fuel present a proliferation risk, limit the repository capacity, and are the major contributors to the long-term toxicity and dose from the repository, methods and systems are needed to reduce the amount of TRU that will eventually r… more
Date: May 1, 2005
Creator: Carmack, Jon; Todoscow, Michael; Meyer, Mitchell K. & Pasamehmetoglu, Kemal O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cyber Incidents Involving Control Systems

Description: The Analysis Function of the US-CERT Control Systems Security Center (CSSC) at the Idaho National Laboratory (INL) has prepared this report to document cyber security incidents for use by the CSSC. The description and analysis of incidents reported herein support three CSSC tasks: establishing a business case; increasing security awareness and private and corporate participation related to enhanced cyber security of control systems; and providing informational material to support model developm… more
Date: October 1, 2005
Creator: Turk, Robert J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Interaction of a Circular Synthetic Jet with a Cross-Flow Boundary Layer

Description: The interaction of a circular synthetic jet with a laminar cross-flow boundary layer was investigated experimentally in the Matched-Index-of-Refraction flow facility at Idaho National Laboratory. Two orifice orientations were investigated, straight and inclined. For each orifice, phase-averaged and time-averaged PIV measurements were made at L◦/D◦ = 1.0 and 2.0 with ReU◦ = 250 and r = 1.12. Refractive index matching between the working fluid and t… more
Date: June 1, 2005
Creator: McEligot, D. M.; Pink, R. J.; Shuster, Jennifer M. & Smith, Douglas R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen