Many fossil power plants in N. America are now required to operate in excess of 20 years beyond their original design life. To ensure safe reliable operation, life assessment of key high-risk components is required. Life assessment of older power plant requires the application of many diverse techniques and the integration of several engineering disciplines with plant operations experience. Traditional approaches to life assessment of high temperature components will be described and illustrated with examples taken from experience on large coal fired plants from the old Ontario Hydro system. These results will include a number of high energy piping welds with approximately 160,000 hours of service that contain intercritical region heat affected zone (HAZ) creep damage (Type IV). These welds have been monitored through in-situ metallography techniques for over 20,000 hours since damage was first detected. New techniques are also being developed or employed: miniature sample testing for evaluating creep and fracture properties along with miniature EDM sample removal techniques. The use of innovative mechanical scratch gauges for the purpose on-line strain monitoring of mechanical or civil structures. The use of orientation imaging microscopy (OIM) for simultaneous comprehensive characterization of the interaction between residual plastic strains, texture, grains size distribution and other crystallographic features as applied to root cause failure analysis. Finally risk based asset management software RBMS for the purpose of detailed component assessments. Examples/results of these techniques will also be presented in the paper.
Skip Nav Destination
2002 International Joint Power Generation Conference
June 24–26, 2002
Scottsdale, Arizona, USA
Conference Sponsors:
- Power Division
ISBN:
0-7918-3617-7
PROCEEDINGS PAPER
Power Plant Life/Risk Assessment Techniques Available to Purchase
M. A. Clark,
M. A. Clark
Kinectrics North America, Inc., Toronto, ON, Canada
Search for other works by this author on:
R. Browne,
R. Browne
AEA Technology Consulting, Abingdon, Oxfordshire, UK
Search for other works by this author on:
M. Flaman,
M. Flaman
Kinectrics North America, Inc., Toronto, ON, Canada
Search for other works by this author on:
E. M. LeHockey,
E. M. LeHockey
Kinectrics North America, Inc., Toronto, ON, Canada
Search for other works by this author on:
I. Thompson
I. Thompson
Kinectrics North America, Inc., Toronto, ON, Canada
Search for other works by this author on:
M. A. Clark
Kinectrics North America, Inc., Toronto, ON, Canada
R. Browne
AEA Technology Consulting, Abingdon, Oxfordshire, UK
M. Flaman
Kinectrics North America, Inc., Toronto, ON, Canada
E. M. LeHockey
Kinectrics North America, Inc., Toronto, ON, Canada
I. Thompson
Kinectrics North America, Inc., Toronto, ON, Canada
Paper No:
IJPGC2002-26101, pp. 339-363; 25 pages
Published Online:
February 24, 2009
Citation
Clark, MA, Browne, R, Flaman, M, LeHockey, EM, & Thompson, I. "Power Plant Life/Risk Assessment Techniques." Proceedings of the 2002 International Joint Power Generation Conference. 2002 International Joint Power Generation Conference. Scottsdale, Arizona, USA. June 24–26, 2002. pp. 339-363. ASME. https://doi.org/10.1115/IJPGC2002-26101
Download citation file:
6
Views
Related Articles
Research and Application of Risk Assessment Methodology for Power Station Boiler Superheaters
J. Pressure Vessel Technol (August,2011)
Performance of Dissimilar Welds in Service
J. Pressure Vessel Technol (August,1985)
Application of Microfocus Rod Anode in Qualification of Tube-to-Tube-Sheet Welds in Steam Generators
J. Pressure Vessel Technol (October,2010)
Related Chapters
Use of PSA in Lisencing of EPR 1600 in Finland (PSAM-0160)
Proceedings of the Eighth International Conference on Probabilistic Safety Assessment & Management (PSAM)
Conclusions
Clean and Efficient Coal-Fired Power Plants: Development Toward Advanced Technologies
QRAS Approach to Phased Mission Analysis (PSAM-0444)
Proceedings of the Eighth International Conference on Probabilistic Safety Assessment & Management (PSAM)