Technical Brief

Serviceability Assessment of Creep Strength Enhanced Ferritic Steels

[+] Author and Article Information
John L. Arnold

Niantic Bay Engineering, LLC,
Niantic, CT 06357

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received August 28, 2014; final manuscript received October 15, 2014; published online February 27, 2015. Assoc. Editor: Marina Ruggles-Wrenn.

J. Pressure Vessel Technol 137(5), 054502 (Oct 01, 2015) (4 pages) Paper No: PVT-14-1139; doi: 10.1115/1.4028936 History: Received August 28, 2014; Revised October 15, 2014; Online February 27, 2015

The metallurgical advancements exhibited in creep strength enhanced ferritic (CSEF) steels have changed the dynamics of boiler design and operation by improving the fatigue life of thick-walled components and improving cycle efficiency by increasing operating temperatures. These advancements have a similar effect on the assessment of these materials. No longer can a serviceability evaluation be based on a general assumption of metallurgical properties. Instead, condition assessment protocols, examination methods, and flaw assessment approaches must reflect the metallurgical nuances of these high temperature alloy steels. This paper will provide guidance on new issues to be considered when developing a serviceability program.

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