22 Matching Results

Search Results

Advanced search parameters have been applied.

in creator/contributor: "Johnson, G. D."

open access

Fuel adjacency effects on fast reactor cladding mechanical properties. [LMFBR]

Simulated transient tests were conducted on 234 cladding specimens from EBR-II irradiated mixed oxide fuel pins; approximately 75% of the specimens were from the fuel column region, with the remainder from the plenum and below the fuel column. The cladding specimens were taken from the N-E, N-F,, PNL-9, PNL-10, PNL-11, P-23A, P-23B, P-23C, and WSA-3 fuel pins irradiated at 15.2 to 37 KW/cm to burnup levels from 11 to 110 MWd/Kg. All the fuel pins used 20% cold worked Type 316 stainless steel cl… more

Date: December 6, 1978

Creator: Hunter, C. W. & Johnson, G. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Mechanical behavior of fast reactor fuel pin cladding subjected to simulated overpower transients

Cladding mechanical property data for analysis and prediction of fuel pin transient behavior were obtained under experimental conditions in which the temperature ramps of reactor transients were simulated. All cladding specimens were 20% CW Type 316 stainless steel and were cut from EBR-II irradiated fuel pins. It was determined that irradiation degraded the cladding ductility and failure strength. Specimens that had been adjacent to the fuel exhibited the poorest properties. Correlations were … more

Date: June 1, 1978

Creator: Johnson, G. D. & Hunter, C. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Strategy for resolution of the Flammable Gas Safety Issue

The purpose of this document is to provide the general strategy for resolution of the flammable gas safety issue; it is not a detailed description of program activities. budgets and schedules. Details of the program activities have been issued (Johnson and Sherwood, 1994) and the information pertaining to budgets is provided in the FY 1995-1997 Multi-Year Work Plan for Tank Waste Remediation System (TWRS) (Program Element 1.1.1.2.02.). The key element in this strategy is to provide an understan… more

Date: April 25, 1995

Creator: Johnson, G. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Program plan for evaluation and remediation of the generation and release of flammable gases in Hanford Site waste tanks

This program plan describes the activities being conducted for the resolution of the flammable gas problem that is associated with 23 high-level waste tanks at the Hanford Site. The classification of the wastes in all of these tanks is not final and some wastes may not be high-level wastes. However, until the characterization and classification is complete, all the tanks are treated as if they contain high-level waste. Of the 23 tanks, Tank 241-SY-101 (referred to as Tank 101-SY) has exhibited … more

Date: August 1, 1991

Creator: Johnson, G.D. (comp.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Mechanical properties of transient-tested irradiated fast-reactor cladding. [811/sup 0/ to 1644/sup 0/K; 5. 8 x 10/sup 22/ n/cm/sup 2/]

Results are presented for three high burnup PNL-11 fuel pins irradiated to goal FFTF exposure levels in testing cladding stress and strain on fast reactor fuel pins subjected to simulated power transient conditions. The mixed oxide fuel with Type 316 SS clad were tested at heating rates of 5.5 k/s and 200 k/s with internal gas pressures of 17.2 to 98.6 MPa. Mechanical property data were obtained. Under short-term transient heating, neutron volumetric swelling does not change. Cladding strength … more

Date: August 9, 1978

Creator: Johnson, G. D. & Hunter, C. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Mechanical properties of highly irradiated 20 percent cold-worked Type 316 stainless steel

Recent experiments have extended the mechanical properties data base of 20 percent cold worked 316 stainless steel to a fluence of 1.3 x 10/sup 23/ n/cm/sup 2/ (E > 0.1 MeV), the goal exposure of the Fast Flux Test Facility. Both uniaxial and biaxial tests were conducted on speciments of developmental cladding which were irradiated in the Experimental Breeder Reactor-II at temperatures ranging from 370/sup 0/C to 650/sup 0/C. Uniaxial tensile tests were conducted at strain rates ranging from 10… more

Date: April 5, 1982

Creator: Hamilton, M. L.; Cannon, N. S. & Johnson, G. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Generation and release of flammable gases in Hanford tanks: An overview

Twenty-five of the 177 high-level waste tanks at the Hanford Site have been identified as having the potential to generate and release flammable gases. This issue was declared an unreviewed safety question (USQ) in early 1990. Designation of the USQ in accordance with the United States Department of Energy (DOE) orders initiated a series of actions that will culminate in an updated safety analysis report (SAR) and new operating restrictions. At the time the USQ was declared, interim operational… more

Date: August 1994

Creator: Johnson, G. D. & McDuffie, N. G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

A summary description of the flammable gas tank safety program

Radioactive liquid waste may produce hydrogen as result of the interaction of gamma radiation and water. If the waste contains organic chelating agents, additional hydrogen as well as nitrous oxide and ammonia may be produced by thermal and radiolytic decomposition of these organics. Several high-level radioactive liquid waste storage tanks, located underground at the Hanford Site in Washington State, are on a Flammable Gas Watch List. Some contain waste that produces and retains gases until la… more

Date: October 1, 1994

Creator: Johnson, G. D. & Sherwood, D. J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Engineering Study to Support Resolution of the Flammable Gas USQ for Catch Tanks

This Engineering Study provides information on the design modification to support closure to the Flammable Gas USQ for Catch Tanks.

Date: March 14, 2000

Creator: Johnson, G. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Microstructural origins of yield strength changes in AISI 316 during fission or fusion irradiation

The changes in yield strength of AISI 316 irradiated in breeder reactors have been successfully modeled in terms of concurrent changes in microstructural components. Two new insights involving the strength contributions of voids and Frank loops have been incorporated into the hardening models. Both the radiation-induced microstructure and the yield strength exhibit transients which are then followed by saturation at a level dependent on the irradiation temperature. Extrapolation to anticipated … more

Date: January 1, 1980

Creator: Garner, F. A.; Hamilton, M. L.; Panayotou, N. F. & Johnson, G. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Microstructural interpretation of the fluence and temperature dependence of the mechanical properties of irradiated AISI 316

The effects of neutron irradiation on the mechanical properties of annealed and 20% cold-worked AISI 316 irradiated in EBR-II were determined for the temperature regime of 370 to 760/sup 0/C for fluences up to 8.4 x 10/sup 22/ n/cm/sup 2/ (E > 0.1 MeV). At irradiation temperatures below about 500/sup 0/C, both annealed and cold-worked material exhibit a substantial increase in the flow stress with increasing fluence. Furthermore, both materials eventually exhibit the same flow stress, which is … more

Date: April 17, 1980

Creator: Johnson, G. D.; Garner, F. A.; Brager, H. R. & Fish, R. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Flammable gas program topical report

The major emphasis of this report is to describe what has been learned about the generation, retention, and release of flammable gas mixtures in high-level waste tanks. A brief overview of efforts to characterize the gas composition will be provided. The report also discusses what needs to be learned about the phenomena, how the Unreviewed Safety Question will be closed, and the approach for removing tanks from the Watch List.

Date: October 30, 1996

Creator: Johnson, G. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Strategy for resolution of the flammable gas safety issue

This document provides a strategy for resolution of the Flammable Gas Safety Issue. It defines the key elements required for the following: Closing the Flammable Gas Unreviewed Safety Question (USQ); Providing the administrative basis for resolving the safety issue; Defining the data needed to support these activities; and Providing the technical and administrative path for removing tanks from the Watch List.

Date: May 23, 1997

Creator: Johnson, G. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Flammable gas project topical report

The flammable gas safety issue was recognized in 1990 with the declaration of an unreviewed safety question (USQ) by the U. S. Department of Energy as a result of the behavior of the Hanford Site high-level waste tank 241-SY-101. This tank exhibited episodic releases of flammable gas that on a couple of occasions exceeded the lower flammability limit of hydrogen in air. Over the past six years there has been a considerable amount of knowledge gained about the chemical and physical processes tha… more

Date: January 29, 1997

Creator: Johnson, G. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Measurement of cladding strain during simulated transient tests

A diametral extensometer was developed and employed during temperature ramp tests with the Fuel Cladding Transient Tester (FCTT). Plastic strain measurements were performed using unirradiated 20% cold-worked AISI 316 stainless steel tubing ramped at 5.6 and 111/sup 0/C/s with internal pressures from 3.4 to 93.1 MPa. Results demonstrated that plastic deformation can occur at stresses well below the conventional 0.2% yield strength and that most deformation in such tests occurs in the final 50/su… more

Date: July 20, 1979

Creator: Duncan, D. R.; Johnson, G. D.; Hunter, C. W. & Hanson, J. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Overview of the Flammability of Gases Generated in Hanford Waste Tanks

This report presents an overview of what is known about the flammability of the gases generated and retained in Hanford waste tanks in terms of the gas composition, the flammability and detonability limits of the gas constituents, and the availability of ignition sources. The intrinsic flammability (or nonflammability) of waste gas mixtures is one major determinant of whether a flammable region develops in the tank headspace; other factors are the rate, surface area, volume of the release, and … more

Date: July 21, 2000

Creator: Mahoney, L. A.; Huckaby, J. L.; Bryan, S. A. & Johnson, G. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Baseline avian use and behavior at the CARES wind plant site, Klickitat County, Washington

This report presents a literature review on avian-wind turbine interactions and the results of a one-year avian baseline study conducted in 1998 at the proposed Conservation and Renewable Energy System (CARES) wind development site in Klickitat County, Washington. Avian use of the site ranged from 1.11/survey in the winter to 5.69/survey in the spring. Average use by passerines in the study plots ranged from 1.15 minutes/survey in the winter to 40.98 minutes/survey in the spring. Raptors spent … more

Date: January 3, 2000

Creator: Erickson, W. P.; Johnson, G. D.; Strickland, M. D.; Kronner, K.; Becker, P. S. & Orloff, S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Evaluation of high-level nuclear waste tanks having a potential flammable gas hazard

In 1990 the U.S. Department of Energy declared an unreviewed safety question as a result of the behavior of tank 241-SY-101. This tank exhibited episodic releases of flammable gases that on a couple of occasions exceeded the lower flammability limit of hydrogen in air. Over the past six years a considerable amount of knowledge has been gained about the chemical and physical processes that govern the behavior of tank 241-SY-101 and the other tanks associated with a potential flammable gas hazard… more

Date: February 14, 1997

Creator: Johnson, G. D.; Barton, W. B.; Hill, R. C. & et al, Fluor Daniel Hanford

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Fuel and cladding tests for fuel failure safety analysis. [LMFBR]

Three systems for testing fuel pin cladding were developed to support the determination of the mode and location of cladding failure during transient overpower events or transient undercooled overpower (TUCOP) conditions. The TUCOP FCTT system consists of exposing cladding specimens to thermal and loading conditions typical of TUCOP events. The Mandrel Loading Test (MLT) system was designed to produce cladding deformation and failure by internal mechanical interaction loading of a heated claddi… more

Date: January 1, 1982

Creator: Hunter, C. W.; Johnson, G. D.; Hu, W. L.; Cannon, N. S.; Feigenbutz, L. V.; Hinman, C. A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Progress in resolving Hanford Site high-level waste tank safety issues

Interim storage of alkaline, high-level radioactive waste, from two generations of spent fuel reprocessing and waste management activities, has resulted in the accumulation of 238 million liters of waste in Hanford Site single and double-shell tanks. Before the 1990`s, the stored waste was believed to be: (1) chemically unreactive under its existing storage conditions and plausible accident scenarios; and (2) chemically stable. This paradigm was proven incorrect when detailed evaluation of tank… more

Date: February 1, 1995

Creator: Babad, H.; Eberlein, S. J.; Johnson, G. D.; Meacham, J. E.; Osborne, J. W.; Payne, M. A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Approach for tank safety characterization of Hanford site waste

The overall approach and associated technical basis for characterizing Hanford Site waste to help identify and resolve Waste Tank Safety Program safety issues has been summarized. The safety issues include flammable gas, noxious vapors, organic solvents, condensed-phase exothermic reactions (ferrocyanide and organic complexants), criticality, high heat, and safety screening. For the safety issues involving chemical reactions (i.e., flammable gas, organic solvents, ferrocyanide, and organic comp… more

Date: March 1995

Creator: Meacham, J. E.; Babad, H.; Cash, R. J.; Dukelow, G. T.; Eberlein, S. J.; Hamilton, D. W. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Evaluation of the generation and release of flammable gases in tank 241-SY-101

Tank 241-SY-101 is a double shell, high-level waste tank located in the 200 West Area of the Hanford Site. This tank contains about 1 million gallons of waste that was concentrated at the 242-S Evaporator. Shortly after the waste was put in the tank, the waste began to expand because the generation of gases. In 1990 this tank was declared to have an unreviewed safety question because of the periodic release of hydrogen and nitrous oxide. A safety program was established to conduct a characteriz… more

Date: November 1, 1991

Creator: Babad, H.; Johnson, G. D.; Lechelt, J. A.; Reynolds, D. A.; Pederson, L. R.; Strachan, D. M. (Pacific Northwest Lab., Richland, WA (United States)) et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department