Fireside corrosion testing of candidate superheater tube alloys, coatings, and claddings -- Phase 2 field testing

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Description

In Phase 1 of this project, laboratory experiments were performed on a variety of developmental and commercial tubing alloys and claddings by exposing them to fireside corrosion tests which simulated a superheater or reheater in a coal-fired boiler. Phase 2 (in situ testing) has exposed samples of 347, RA85H, HR3C, RA253MA, Fe{sub 3}Al + 5Cr, Ta-modified 310, NF 709, 690 clad, 671 clad, and 800HT for up to approximately 16,000 hours to the actual operating conditions of a 250-MW, coal-fired boiler. The samples were installed on air-cooled, retractable corrosion probes, installed in the reheater cavity, and controlled to the operating ... continued below

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[75] p.

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Blough, J.L.; Seitz, W.W. & Girshik, A. June 1, 1998.

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Description

In Phase 1 of this project, laboratory experiments were performed on a variety of developmental and commercial tubing alloys and claddings by exposing them to fireside corrosion tests which simulated a superheater or reheater in a coal-fired boiler. Phase 2 (in situ testing) has exposed samples of 347, RA85H, HR3C, RA253MA, Fe{sub 3}Al + 5Cr, Ta-modified 310, NF 709, 690 clad, 671 clad, and 800HT for up to approximately 16,000 hours to the actual operating conditions of a 250-MW, coal-fired boiler. The samples were installed on air-cooled, retractable corrosion probes, installed in the reheater cavity, and controlled to the operating metal temperatures of an existing and advanced-cycle, coal-fired boiler. Samples of each alloy were exposed for 4,483, 11,348, and 15,883 hours of operation. The present results are for the metallurgical examination of the corrosion probe samples after the full 15,883 hours of exposure. A previous topical report has been issued for the 4,483 hours of exposure.

Physical Description

[75] p.

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OSTI as DE98006098

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  • Other Information: PBD: Jun 1998

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  • Other: DE98006098
  • Report No.: ORNL/Sub--93-SM401/02
  • Grant Number: AC05-96OR22464
  • DOI: 10.2172/663409 | External Link
  • Office of Scientific & Technical Information Report Number: 663409
  • Archival Resource Key: ark:/67531/metadc711368

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  • June 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • May 2, 2016, 3:50 p.m.

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Blough, J.L.; Seitz, W.W. & Girshik, A. Fireside corrosion testing of candidate superheater tube alloys, coatings, and claddings -- Phase 2 field testing, report, June 1, 1998; Tennessee. (digital.library.unt.edu/ark:/67531/metadc711368/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.