NDLI: Case Studies of Pulsed Eddy Current to Measure Wall Loss in Feedwater Piping and Heater Shells

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Marvin, J. Cohn Jordan, W. Norton
Copyright Year	2008
Abstract	There have been several feedwater piping and heater shell failures in power plants caused by flow-accelerated corrosion (FAC). This failure mechanism may be one of the most important types of damage to find proactively because FAC damage has occasionally resulted in catastrophic failures and human fatalities. Predicting, detecting, and resolving significant FAC damage can significantly reduce future forced outages and increase personnel safety. This paper describes the implementation of recent developments to perform cost-effective FAC examinations. These advances include the use of specialized pulsed eddy current (PEC) hardware and software to scan for wall thinning without removing insulation. Recent results are based on the current version, MK II, of this equipment. The authors have performed more than 200 power plant projects with this PEC equipment, examining numerous pipes and shells. This work consists of more than 70 projects of wall loss examinations for the nuclear industry, including examinations of feedwater heater shells inside the condenser. Results of wall loss measurements regarding PEC average wall thickness (AWT) measurements, ultrasonic thickness examinations (UTTH), and the PEC evaluated Defect Algorithm are compared in this study.
Sponsorship	Pressure Vessels and Piping
Starting Page	721
Ending Page	731
Page Count	11
File Format	PDF
ISBN	9780791848296
DOI	10.1115/PVP2008-61239
e-ISBN	0791838285
Volume Number	Volume 6: Materials and Fabrication, Parts A and B
Conference Proceedings	ASME 2008 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2008-07-27
Publisher Place	Chicago, Illinois, USA
Access Restriction	Subscribed
Subject Keyword	Insulation Nuclear industry Eddy currents (electricity) Condensers (steam plant) Computer software Shells Wall thickness Flow (dynamics) Algorithms Corrosion Eddies (fluid dynamics) Feedwater Power stations Hardware Safety Damage Pipes Failure Failure mechanisms
Content Type	Text
Resource Type	Article

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