Risk-based inspection (RBI) has been applied to good effect in relation to pieces of equipment and pipelines in the petrochemical industry worldwide, but to the best of our knowledge application of RBI to power station boilers has not hitherto been reported. The tubes of the four key components, namely, the economizer, the water-cooling wall, the superheater, and the reheater, are prone to blast due to direct fire heating. Such a blast always causes unplanned shutdown and has severe safety implications. Based on the “API 581-2000” code (Risk-Based Inspection Base Resource), the failure mechanisms of power station boilers have been studied, and the high-temperature smoke erosion factor and high-temperature creep factor have been calculated. Then, considering specific situations in China, such as material quality and extended service, a failure modification factor based on remaining life has been proposed. Finally, two risk assessment projects have been carried out; after delineating the risk levels of the tubes, appropriate management suggestions have been proposed. The obtained data should provide some technical support for the application of RBI to power station boilers.
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August 2011
Research Papers
Research and Application of Risk Assessment Methodology for Power Station Boiler Superheaters
Fujun Liu,
e-mail: lfj_dq@126.com
Fujun Liu
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, China
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Shuai Kong,
Shuai Kong
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, China
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Zhangwei Ling,
Zhangwei Ling
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, China
Search for other works by this author on:
Qiang Li,
Qiang Li
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, China
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Yueqiang Qian,
Yueqiang Qian
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, China
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Mulin Zheng
Mulin Zheng
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, China
Search for other works by this author on:
Fujun Liu
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, Chinae-mail: lfj_dq@126.com
Shuai Kong
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, China
Zhangwei Ling
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, China
Qiang Li
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, China
Yueqiang Qian
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, China
Mulin Zheng
Zhejiang Provincial Special Equipment Inspection and Research Institute
, No. 211 Kaixuan Road, Hangzhou, Zhejiang 310020, ChinaJ. Pressure Vessel Technol. Aug 2011, 133(4): 041602 (10 pages)
Published Online: May 18, 2011
Article history
Received:
April 16, 2010
Revised:
October 16, 2010
Online:
May 18, 2011
Published:
May 18, 2011
Citation
Liu, F., Kong, S., Ling, Z., Li, Q., Qian, Y., and Zheng, M. (May 18, 2011). "Research and Application of Risk Assessment Methodology for Power Station Boiler Superheaters." ASME. J. Pressure Vessel Technol. August 2011; 133(4): 041602. https://doi.org/10.1115/1.4002861
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