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Materials evaluation for geothermal applications: turbine materials

Description: A number of candidate turbine materials are being evaluated for their resistance to erosion, corrosion, and stress corrosion cracking (SCC) in geothermal brines. These materials include Fe-, Ni-, Co and Ti-base alloys, coatings and ceramics. Tapered wearblades, simulating the leading edge of a turbine blade, are exposed to the direct impact of a two-phase nozzle exhaust. Bent beam SCC specimens, which are constrained in fixtures attached to the wearblade holders, are also exposed to this exhaus… more
Date: April 13, 1977
Creator: Goldberg, A. & Garrison, R.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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EFFECTS OF CHEMISTRY AND OTHER VARIABLES ON CORROSION AND STRESS CORROSION CRACKING IN HANFORD DOUBLE SHELL TANKS

Description: Laboratory testing was performed to develop a comprehensive understanding of the corrosivity of the tank wastes stored in Double-Shell Tanks using simulants primarily from Tanks 241-AP-105, 241-SY-103 and 241-AW-105. Additional tests were conducted using simulants of the waste stored in 241-AZ-102, 241-SY-101, 241-AN-107, and 241-AY-101. This test program placed particular emphasis on defining the range of tank waste chemistries that do not induce the onset of localized forms of corrosion, part… more
Date: November 13, 2008
Creator: MH, BROWN
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Anodic Behavior of Alloy 22 in Calcium Chloride and in Calcium Chloride Plus Calcium Nitrate Brines

Description: Alloy 22 (UNS N60622) is a nickel-based alloy, which is extensively used in aggressive industrial applications, especially due to its resistance to localized corrosion and stress corrosion cracking in high chloride environments. The purpose of this work was to characterize the anodic behavior of Alloy 22 in concentrated calcium chloride (CaCl{sub 2}) brines and to evaluate the inhibitive effect of nitrate, especially to localized corrosion. Standard electrochemical tests such as polarization re… more
Date: May 13, 2003
Creator: Evans, K. J.; Day, S. D.; Ilevbare, G. O.; Whalen, M. T.; King, K. J.; Hust, G. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Program for the Inspection of Nickel Alloy Components Report from the Program’s Steering Committee: Inspection of Bottom-Mounted Instrumentation Nozzles Round Robin

Description: The U.S. Nuclear Regulatory Commission (NRC) executed agreements with organizations in Japan, Sweden, South Korea, Finland, and the United States to establish the Program for the Inspection of Nickel Alloy Components (PINC).
Date: November 13, 2009
Creator: Cumblidge, Stephen E.; Heasler, Patrick G.; Doctor, Steven R. & Taylor, Theodore T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ZEOLITE CHARACTERIZATION TESTING

Description: The Savannah River Site isolates tritium from its process streams for eventual recycling. This is done by catalyzing the formation of tritiated water (from process streams) and then sorbing that water on a 3A zeolite (molsieve) bed. The tritium is recovered by regenerating the saturated bed into a Mg-based water cracking unit. The process described has been in use for about 15 years. Recently chloride stress corrosion cracking (SCC) was noted in the system piping. This has resulted in the need … more
Date: September 13, 2007
Creator: Jacobs, W & Herbert Nigg, H
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Stress Corrosion Cracking of the Drip Shield, the Waste Package Outer Barrier, and the Stainless Steel Structural Material

Description: Stress corrosion cracking is one of the most common corrosion-related causes for premature breach of metal structural components. Stress corrosion cracking is the initiation and propagation of cracks in structural components due to three factors that must be present simultaneously: metallurgical susceptibility, critical environment, and static (or sustained) tensile stresses. This report was prepared according to ''Technical Work Plan for: Regulatory Integration Modeling and Analysis of the Was… more
Date: October 13, 2004
Creator: Gordon, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Probing the Elastic-Plastic, Time-Dependant Response of Test Fasteners using Finite Element Analysis (FEA)

Description: The evolution of global and local stress/strain conditions in test fasteners under test conditions is investigated using elastic-plastic, time-dependent finite element analyses (FEA). For elastic-plastic response, tensile data from multiple specimens, material heats and test temperatures are integrated into a single, normalized flow curve from which temperature dependency is extracted. A primary creep model is calibrated with specimen- and fastener-based thermal relaxation data generated under … more
Date: December 13, 2004
Creator: Renauld, ML & Lien, H
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DEGRADATION MODES OF ALLOY 22 IN YUCCA MOUNTAIN REPOSITORY CONDITIONS

Description: The nuclear waste package design for Yucca Mountain (Nevada, USA), in its current configuration, consists of a double wall cylindrical container fabricated using a highly corrosion resistant Ni-based Alloy 22 for the outer barrier and type 316 stainless steel for the inner structural vessel. A mailbox-shaped drip shield fabricated primarily using Ti Grade 7 will cover the waste packages. The environmental degradation of the relevant materials have been extensively studied and modeled for over t… more
Date: October 13, 2005
Creator: Hua, Fred; Gordon, Gerald M.; Mon, Kevin G. & Rebak, Raul B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Stress Corrosion Cracking of Carbon Steel Weldments

Description: An experiment was conducted to investigate the role of weld residual stress on stress corrosion cracking in welded carbon steel plates prototypic to those used for nuclear waste storage tanks. Carbon steel specimen plates were butt-joined with Gas Metal Arc Welding technique. Initial cracks (seed cracks) were machined across the weld and in the heat affected zone. These specimen plates were then submerged in a simulated high level radioactive waste chemistry environment. Stress corrosion cracki… more
Date: January 13, 2005
Creator: POH-SANG, LAM
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Process test plan for the 241-AN-105 multi-function corrosion monitoring system

Description: Process Test Plan (PTP) for 241-AN-105 corrosion monitoring system. A corrosion monitoring probe will be installed into 241-AN-105 in late FY 1999. There are five principle objectives of this task: (1) Acquire data on the corrosive characteristics of the existing waste in 241-AN-105. (2) Provide supporting data to the Integrity Assessment program. (3) Acquire data to support a proposed eventual change in the operation of double shell tanks to monitor and control tank corrosion through the use o… more
Date: July 13, 1999
Creator: EDGEMON, G.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

UNDERSTANDING THE MECHANISMS CONTROLLING ENVIRONMENTALLY-ASSISTED INTERGRANULAR CRACKING OF NICKEL-BASE ALLOYS

Description: Creep and IG cracking of nickel-base alloys depend principally on two factors--the deformation behavior and the effect of the environment. We have shown that both contribute to the observed degradation in primary water. The understanding of cracking does not lie wholly within the environmental effects arena, nor can it be explained only by intrinsic mechanical behavior. Rather, both processes contribute to the observed behavior in primary water. In this project, we had three objectives: (1) to … more
Date: February 13, 2004
Creator: Was, Gary S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Alternate immersion stress corrosion testing of 5083 aluminum

Description: The stress corrosion susceptibility of Type 5083 aluminum--magnesium alloy in plate form and press-formed shapes was determined in the short transverse direction. C-ring type specimens were exposed to alternate immersion in a sodium chloride solution. The test equipment and procedure, with several innovative features, are described in detail. Statistical test results are listed for seven thermomechanical conditions. A certain processing scheme was shown to yield a work-strengthened part that is… more
Date: November 13, 1978
Creator: Briggs, J.L.; Dringman, M.R.; Hausburg, D.E. & Jackson, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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