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Role of Oxide Scale Thickness Measurements in Boiler Conditions Assessment

Authors: M. Alardhi, A. Almazrouee, S. Alsaleh

Abstract:

Oxide scale thickness measurements are used in assessing the life of different components operating at high temperature environment. Such measurements provide an approximation for the temperature inside components such as reheater and superheater tubes. A number of failures were encountered in one of the boilers in one of Kuwaiti power plants. These failure were mainly in the first row of the primary super heater tubes, therefore, the specialized engineer decide to replace them during the annual shutdown. As a tool for failure analysis, oxide scale thickness measurement were used to investigate the temperature distribution in these tubes. In this paper, the oxide scale thickness of these tubes were measured and used for analysis. The measurements provide an illustration of the distribution of heat transfer of the primary superheater tubes in the boiler system. Remarks and analysis about the design of the boiler are also provided.

Keywords: Super heater tubes, oxide scale measurements, overheating.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1081597

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References:


[1] Hsuan-Chin Lai, Component life assessment methods for nuclear power plant, International Journal of Pressure Vessels and Piping, vol. 59, pp. 227-240, 1994.
[2] D.K. Bhattacharya, NDT for residual life assessment in Indian industry, Insight: Non-Destructive Testing and Condition Monitoring, vol. 45, pp. 31-40, 2003.
[3] Rudolph Blum, The Danish experience in materials aspects in power plant life assessment and in life extension, International Journal of Pressure Vessels and Piping, vol. 39, pp. 29-40, 1989.
[4] J.A. Daleo, et al., Metallurgical considerations for life assessment and the safe refurbishment and requalification of gas turbine blades, Journal of Engineering for Gas Turbines and Power, vol. 124, pp. 571-579, 2002.
[5] J. D. Parker and B. Wilshire, Non-destructive life assessment of high temperature components and weldments, International Journal of Pressure Vessels and Piping, vol. 50, pp. 337-347, 1992.
[6] Takashi Sakurai, et al., Life assessment of high-temperature components of thermal power plants in Japan, Nuclear Engineering and Design, vol. 139, pp. 311-317, 1993/3 1993.
[7] R. Viswanathan, "Life assessment technology for fossil power plants," in Proceedings of the 57th Annual American Power Conference. Part 3 (of 3), Apr 18-20 1995, Chicago, IL, USA, 1995, pp. 1749-1768.
[8] Roger H. Richman, "ANALYSIS OF OXIDE SCALES FOR FAILURE INVESTIGATIONS.," in Proceedings - ISTFA 1982, International Symposium for Testing and Failure Analysis 1982., San Jose, CA, USA, 1982, pp. 219-225.
[9] P. Auerkari, NDT for high-temperature installations - a review, Welding in the World, Le Soudage Dans Le Monde, vol. 39, pp. 351-362, 1997.
[10] T. J. Wardle, "Creep-rupture assessment of superheater tubes using nondestructive oxide thickness measurement," in International Conference of Life Management, China, 2000.
[11] L. W. Pinder, OXIDE CHARATERIZATION FOR SERVICE FAILURE INVESTIGATIONS, Corrosion Science, vol. 21, pp. 749- 763, 1981.
[12] Carl D. Lundin, et al., Literature review on characteristics of high temperature ferritic Cr-Mo steels and weldments, Welding Research Council Bulletin, pp. 1-36, 2000.
[13] R. L. Klueh, Chromium-molybdenum steels for fusion reactor first walls -- a review, Nuclear Engineering and Design, vol. 72, pp. 329-344, 1982/10/1 1982.
[14] R. L. Klueh and Donald R. Harries, High-chromium ferritic and martensitic steels for nuclear applications. W. Conshohocken, PA: ASTM, 2001.
[15] Ramaswamy Viswanathan, Damage mechanisms and life assessment of high-temperature components. Metals Park, Ohio: ASM International, 1989.