Role of Oxide Scale Thickness Measurements in Boiler Conditions Assessment
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.
[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.
[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.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:62703", author = "M. Alardhi and A. Almazrouee and S. Alsaleh", title = "Role of Oxide Scale Thickness Measurements in Boiler Conditions Assessment", 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.", volume = "5", number = "9", pages = "1937-3", }
