scholarly journals Operating history of Hanford Piles

1955 ◽  
Author(s):  
J.W. Talbott
Keyword(s):  
History Of ◽  
Operating History

Design and Remnant Life Analysis of a Carbon Steel Containment Jacket Operating in the Creep Range

2004 ◽  
Author(s):  
David Mair
Keyword(s):  
Elevated Temperature ◽  
Carbon Steel ◽  
Creep Behaviour ◽  
Operating Life ◽  
Probabilistic Technique ◽  
History Of ◽  
Routine Inspection ◽  
Life Analysis ◽  
Steam System ◽  
Operating History

During routine inspection of a 35 year old steam generating plant, a large surface crack was found at a critical tee intersection. With the crack appearing to be close to a condition of sudden rupture, a probabilistic technique was used to assist in determining the likelihood of failure. This paper describes this technique and the design of a carbon steel containment jacket used to enclose the cracked area. The design of the jacket had to take into account its creep behaviour at elevated temperature. The advantage of this repair method was that it was able to be installed quickly and without having to completely de-pressure the steam system. It was later decided that the operating life of the jacket should be extended to defer a planned shutdown. A simplified remnant life analysis was then undertaken as detailed in this paper. Taking into account the operating history of the jacket, it demonstrated that the life of the jacket could be safely extended as required.

scholarly journals Model for Staebler-Wronski Degradation Deduced from Long-Term, Controlled Light-Soaking Experiments

2000 ◽  
Vol 609 ◽  
Author(s):  
Bolko von Roedern ◽  
Joseph A. del Cueto
Keyword(s):  
Light Intensity ◽  
Amorphous Silicon ◽  
Operating Conditions ◽  
Degradation Mechanisms ◽  
Time Constants ◽  
Photovoltaic Modules ◽  
History Of ◽  
Exposure History ◽  
Operating History

ABSTRACTLong-term light-soaking experiments of amorphous silicon photovoltaic modules have now established that stabilization of the degradation occurs at levels that depend significantly on the operating conditions, as well as on the operating history of the modules. We suggest that stabilization occurs because of the introduction of degradation mechanisms with different time constants and annealing activation energies, depending on the exposure conditions. Stabilization will occur once a sufficient accumulation of different degradation mechanisms occurs. We find that operating module temperature during light-soaking is the most important parameter for determining stabilized performance. Next in importance is the exposure history of the device. The precise value of the light intensity seems least important in determining the stabilized efficiency, as long as its level is a significant fraction of 1-sun.

Characteristics and operating history of Toray spiral-wound cellulose acetate memrane elements

Desalination ◽  
1983 ◽  
Vol 46 (1-3) ◽  
pp. 57-66 ◽  
Author(s):  
R Bairinji ◽  
T Tanaka ◽  
N Kurihara ◽  
N Kananaru ◽  
T Tonomura
Keyword(s):  
Cellulose Acetate ◽  
History Of ◽  
Operating History ◽  
Spiral Wound

scholarly journals Ten Years’ Operating History of a Large Gas Turbine/Recompression Train

1989 ◽  
Author(s):  
C. Peter Conquergood ◽  
Dave Blauser ◽  
Peter Willbourn
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Compressor Unit ◽  
History Of ◽  
Three Stages ◽  
Operating History ◽  
Canada Limited ◽  
Turbine Exhaust

In 1978, Shell Canada Limited commissioned a large aero-derivative gas turbine driven compressor unit in its Waterton Straddle Plant. This unspared unit provides the primary recompression service in the “Deep Cut” ethane extraction facility. Significant operating features of this unit include flat rating and three stages of waste heat recovery from the turbine exhaust. Throughout its history, this unit has demonstrated over 99% reliability and has operated for long periods without significant maintenance. All routine turbine maintenance has been accomplished on-site. This paper describes the features of the installation, the operating and maintenance philosophy, and the experience obtained from ten years’ service, thus providing the reader with insight in regard to features and practices which can provide for a successful installation.

New Approach for Fatigue Damage Monitoring Based on Actual Operating History of Nuclear Power Plants

2015 ◽  
Vol 190 (1) ◽  
pp. 88-96 ◽  
Author(s):  
Hee-Jin Shim ◽  
Chang-Kyun Oh ◽  
Hyun-Su Kim ◽  
Myung-Hwan Boo ◽  
Jong-Jooh Kwon
Keyword(s):  
Fatigue Damage ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
New Approach ◽  
Actual Operating ◽  
Damage Monitoring ◽  
History Of ◽  
Operating History

Design Considerations in the Development of a 38 MW Gas Turbine Cogeneration Facility

1990 ◽  
Author(s):  
Andrew D. Hall ◽  
William E. Hauhe
Keyword(s):  
Gas Turbines ◽  
Catalytic Reduction ◽  
Water Injection ◽  
Operating Experience ◽  
Set Design ◽  
Design Features ◽  
Energy Company ◽  
Design Considerations ◽  
History Of ◽  
Operating History

Cogeneration has proven to be an ideal application for gas turbines, one which subsidiaries of Texaco Producing Inc. and Mission Energy Company have developed in three successful projects to date. The 38 MW Mid-Set project is the latest, having been commissioned for commercial operation in April, 1989. Several of the Mid-Set design features were developed from past operating experience, while other design features were employed to meet requirements specific to the project. Strict pollution control required the use of water injection, selective catalytic reduction, continuous emissions monitoring and minimal production of waste water. Other design considerations were plant availability, operability and efficiency for the continuous, base load operation of a turbine-generator. The design features and initial operating history of the Mid-Set cogeneration plant are described in this paper.

Lifetime Estimation of Chain Plates for Floodgates Working in Seawater by Continuum Fatigue-Creep Damage Theory and Transient Analysis of Diffusion Process of Hydrogen

2015 ◽  
Vol 1095 ◽  
pp. 452-457
Author(s):  
Mun Chan Jong ◽  
Li Yang Xie ◽  
Hak Jin Song ◽  
Sun Jong Jon ◽  
Myong Il Kim ◽  
...  
Keyword(s):  
Diffusion Process ◽  
Atomic Hydrogen ◽  
Transient Analysis ◽  
Creep Damage ◽  
High Strength ◽  
Average Lifetime ◽  
Lifetime Estimation ◽  
History Of ◽  
Damage Theory ◽  
Operating History

Lifetime estimation of chain plates made of 45Cr high strength steel for floodgates working in seawater has been performed by considering fatigue-creep crack initiation and hydrogen assisted crack propagation at the plate. According to the records of operating history of the floodgates, average lifetime of the chain plate is in range of 18~22 years. Estimated lifetime of the chain plate by continuum fatigue-creep damage theory and transient analysis of the diffusion process of atomic hydrogen in the metallic lattice is in range of 19~25 years.

Operating Experience With a 42.5 MW Gas Turbine Used in a Cogeneration Plant at a Paper Mill in the U.S.

1989 ◽  
Author(s):  
S. T. O’Neill
Keyword(s):  
Gas Turbine ◽  
Operating Experience ◽  
Paper Mill ◽  
Cogeneration Plant ◽  
History Of ◽  
Operating History ◽  
Base Load ◽  
The U.S ◽  
Reliability And Availability

The CW251B10 Gas Turbine has been in service at the Procter & Gamble Paper Mill located at Mehoopany, Pennsylvania since July 1985, and has exhibited outstanding reliability and availability since that time. It operates continuously at base load supplying both electricity and process air for the plant. This paper reviews the operating history of the gas turbine, and describes some of the problems experienced, together with their solutions.

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