Corrosion fatigue boiler tube failures in waterwalls and economizers. Volume 1, Field Survey Summary: Final report

Technical Report · Wed Apr 01 04:00:00 EST 1992

OSTI ID:10154568

McNabb, D; Sidey, D ^[1]

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1. Ontario Hydro, Toronto, ON (Canada)

Corrosion fatigue is a cracking mechanism initiating on the inside surface of water-touched boiler tubing at locations subject to high fatigue stresses, usually at pressure/nonpressure attachments. The mechanism is considered one of the last major sources of boiler tube failures in subcritical drum-type boilers without a root cause solution. The Electric Power Research Institute initiated a study to derive solutions to corrosion fatigue for in-service boilers and guidelines for the design of new boilers. The study consisted of a number of tasks including a survey of industry experience, field testing, theoretical stress analysis, and laboratory testing. The present volume summarizes the survey results. Ten subcritical drum-type boilers participated in the survey. The procedure involved a review of maintenance and boiler water chemistry history, and a detailed inspection of the boiler.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States); Ontario Hydro, Toronto, ON (Canada); ABB Combustion Engineering, Inc., Windsor, CT (United States); Babcock and Wilcox Co., Barberton, OH (United States)
• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 10154568
• Report Number(s): EPRI-TR--100455-Vol.1; ON: UN92015770
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104
36 MATERIALS SCIENCE
360105
BOILERS
COMPONENTS
CORROSION
CORROSION AND EROSION
CRACKS
ECONOMIZERS
FATIGUE
FOSSIL-FUEL POWER PLANTS
TUBES
WATER CHEMISTRY