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Title: A Flexural Mode Tuning Technique for Membraned Boiler Tubing

Abstract

Corrosion of tubing used in black-liquor recovery boilers is a major concern in all pulp and paper mills. Extensive corrosion in recovery boiler tubes can result in a significant safety and environmental hazard. Considerable plant resources are expended to inspect recovery boiler tubing. Currently, visual and ultrasonic inspections are primarily used during the annual maintenance shutdown to monitor corrosion rates and cracking of tubing. This project is developing guided acoustic waves for use on recovery boiler tubing. The feature of this acoustic technique is its cost-effectiveness in inspecting long lengths of tubes from a single inspection point. A piezoelectric or electromagnetic transducer induces guided waves into the tubes. The transducer detects fireside defects from the cold side or fireside of the tube. Cracking and thinning on recovery boiler tubes have been detected with this technique in both laboratory and field applications.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
862386
Report Number(s):
UCRL-CONF-210739
TRN: US200602%%497
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: Third US-Japan Symposium on NDE, Makena, HI, United States, Jun 20 - Jun 24, 2005
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ACOUSTICS; BOILERS; CORROSION; DEFECTS; MAINTENANCE; MONITORS; SAFETY; SHUTDOWN; TRANSDUCERS; TUNING; ULTRASONIC WAVES

Citation Formats

Quarry, M J, Chinn, D J, and Rose, J L. A Flexural Mode Tuning Technique for Membraned Boiler Tubing. United States: N. p., 2005. Web.
Quarry, M J, Chinn, D J, & Rose, J L. A Flexural Mode Tuning Technique for Membraned Boiler Tubing. United States.
Quarry, M J, Chinn, D J, and Rose, J L. Mon . "A Flexural Mode Tuning Technique for Membraned Boiler Tubing". United States. https://www.osti.gov/servlets/purl/862386.
@article{osti_862386,
title = {A Flexural Mode Tuning Technique for Membraned Boiler Tubing},
author = {Quarry, M J and Chinn, D J and Rose, J L},
abstractNote = {Corrosion of tubing used in black-liquor recovery boilers is a major concern in all pulp and paper mills. Extensive corrosion in recovery boiler tubes can result in a significant safety and environmental hazard. Considerable plant resources are expended to inspect recovery boiler tubing. Currently, visual and ultrasonic inspections are primarily used during the annual maintenance shutdown to monitor corrosion rates and cracking of tubing. This project is developing guided acoustic waves for use on recovery boiler tubing. The feature of this acoustic technique is its cost-effectiveness in inspecting long lengths of tubes from a single inspection point. A piezoelectric or electromagnetic transducer induces guided waves into the tubes. The transducer detects fireside defects from the cold side or fireside of the tube. Cracking and thinning on recovery boiler tubes have been detected with this technique in both laboratory and field applications.},
doi = {},
url = {https://www.osti.gov/biblio/862386}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {3}
}

Conference:
Other availability
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