Volume 20, Issue 2 (February 2020)                   Modares Mechanical Engineering 2020, 20(2): 509-514 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Shami A, Moussavi Torshizi S, Jahangiri A. Experimental and Computational Investigation of Platen Superheater Failure in 320MW Power Plant. Modares Mechanical Engineering 2020; 20 (2) :509-514
URL: http://mme.modares.ac.ir/article-15-26929-en.html
1- Applied Design Department, Mechanical Engineering & Energy Faculty, Shahid Beheshti University (SBU), Tehran, Iran
2- Applied Design Department, Mechanical Engineering & Energy Faculty, Shahid Beheshti University (SBU), Tehran, Iran , e_moussavi@sbu.ac.ir
3- Energy Conversion Department, Mechanical Engineering & Energy Faculty, Shahid Beheshti University (SBU), Tehran, Iran
Abstract:   (4182 Views)
Superheater tubes are the most critical components of the power plant’s boiler. These tubes are subject to degradation such as creep and overheating, due to the hard operating conditions (exposure to high temperature and pressure for a long period). Therefore, it is important to diagnose and prevent these failures. The failure report in a 320-megawatt power plant indicates that most tube ruptures are concentrated in a particular region of the platen superheater (radiative superheater). The investigation of broken tubes shows that the temperature of the tubes in this area is higher than the other platen superheater’s regions. Three methods of metallography, oxide layer thickness measurement and thermal analysis using computational fluid dynamics were used to prove the existence of higher temperatures at the point of breakdown. All three methods provide the same results. The results of surveys confirm this significant temperature difference and show that the increase in the local temperature in the damaged tubes is due to the longer length of these tubes, which results in lower vapor mass flow rate, and absorb more heat due to the higher thermal surfaces of them.
Full-Text [PDF 1323 kb]   (1775 Downloads)    
Article Type: Original Research | Subject: Damage Mechanics
Received: 2018/11/12 | Accepted: 2019/06/11 | Published: 2020/02/1

References
1. French DN. Metallurgical failures in fossil fired boilers. New York: Wiley; 1983. [Link]
2. Becker WT, Shipley RJ, editors. ASM handbook, failure analysis and prevention. 1st Edition. 11th Volume. Cleveland: ASM International; 2002. [Link]
3. Jones DR. Creep failures of overheated boiler, superheater and reformer tubes. Engineering Failure Analysis. 2004;11(6):873-893. [Link] [DOI:10.1016/j.engfailanal.2004.03.001]
4. Psyllaki PP, Pantazopoulos G, Lefakis H. Metallurgical evaluation of creep-failed superheater tubes. Engineering Failure Analysis. 2009;16(5):1420-1431. [Link] [DOI:10.1016/j.engfailanal.2008.09.012]
5. Begum Sh, Karim AN, Zamani AS, Shafii MA. Wall thinning and creep damage analysis in boiler tube and optimization of operating conditions. Journal of Mechatronics. 2013;1:1-6. [Link]
6. Viswanathan R, Stringer J. Failure mechanisms of high temperature components in power plants. Journal of Engineering Materials and Technology. 2000;122(3):246-255. [Link] [DOI:10.1115/1.482794]
7. Neves DL, Seixas JR, Tinoco EB, Rocha AD, Abud ID. Stress and integrity analysis of steam superheater tubes of a high pressure boiler. Materials Research. 2004;7(1):155-161. [Link] [DOI:10.1590/S1516-14392004000100021]
8. Othman H, Purbolaksono J, Ahmad B. Failure investigation on deformed superheater tubes. Engineering Failure Analysis. 2009;16(1):329-339. [Link] [DOI:10.1016/j.engfailanal.2008.05.023]
9. Purbolaksono J, Ahmad J, Khinani A, Ali AA, Rashid AZ. Failure case studies of SA213-T22 steel tubes of boiler through computer simulations. Journal of Loss Prevention in the Process Industries. 2010;23(1):98-105. [Link] [DOI:10.1016/j.jlp.2009.06.005]
10. Al-Kayiem HH, Albarody TMB. Numerical investigation of superheater tube failure. WTT Transactions on Engineering Sciences. 2016;106:1-10. [Link] [DOI:10.2495/HT160011]
11. Pramanick AK, Das G, Das SK, Ghosh M. Failure investigation of super heater tubes of coal fired power plant. Case Studies in Engineering Failure Analysis. 2017;9:17-26. [Link] [DOI:10.1016/j.csefa.2017.06.001]
12. Movahedi-Rad A, Plasseyed SS, Attarian M. Failure analysis of superheater tube. Engineering Failure Analysis. 2015;48:94-104. [Link] [DOI:10.1016/j.engfailanal.2014.11.012]
13. Liang Z, Jin X, Zhao Q. Investigation of overheating of the final super-heater in a 660 MW power plant. Engineering Failure Analysis. 2014;45:59-64. [Link] [DOI:10.1016/j.engfailanal.2014.06.022]
14. Purbolaksono J, Ahmad J, Beng LC, Rashid AZ, Khinani A, Ali AA. Failure analysis on a primary superheater tube of a power plant. Engineering Failure Analysis. 2010;17(1):158-167. [Link] [DOI:10.1016/j.engfailanal.2009.04.017]
15. Dehnavi F, Eslami A, Ashrafizadeh F. A case study on failure of superheater tubes in an industrial power plant. Engineering Failure Analysis. 2017;80:368-377. [Link] [DOI:10.1016/j.engfailanal.2017.07.007]
16. Fetni S, Toumi A, Mkaouar I, Boubahri Ch, Briki J. Microstructure evolution and corrosion behaviour of an ASTM A213 T91 tube after long term creep exposure. Engineering Failure Analysis. 2017;79:575-591. [Link] [DOI:10.1016/j.engfailanal.2017.03.023]
17. Barsom JM, editor. Flaw growth and fracture. West Conshohocken: ASTM International; 1977. [Link] [DOI:10.1520/STP631-EB]
18. Concari S. Residual life assessment and microstructure. ECCC Recommendations. 2005;6(1):1-30. [Link]

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.