Journal of Failure Analysis and Prevention

, Volume 15, Issue 4, pp 474–479 | Cite as

Investigation on Failure of a Drilling Rig Mast Structure

Case History---Peer-Reviewed
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Abstract

A drilling rig that was used for exploration of gaseous fuels was inspected. During its operation the rig mast suddenly collapsed and the structure got twisted from the middle. The failure investigation was carried out to determine the probable causes of failure in the rig. Estimation of mechanical properties, optical microscopic analysis along with scanning electron microscopy examinations were necessary supplements to this investigation. Detailed stress analysis of the structure for different conditions of loads and anchors was examined. It was ultimately concluded that non-functioning of record-o-meter was responsible for rapid increase in operating load and one or more cables/anchoring points did not have sufficient strength to withstand the operating load. The anchoring cable broke with a jerk and the mast structure collapsed under its weight.

Keywords

Defect analysis Failure analysis Fractography Structural Integrity 

References

  1. 1.
    G. Das, S. Chakrabarty, A.K. Dutta, S.K. Das, K.K. Gupta, R.N. Ghosh, Failure analysis of a high mast lamp post. Eng. Fail. Anal. 13, 1153–1158 (2006)CrossRefGoogle Scholar
  2. 2.
    J.H. Lee, W.D. You, J.W. Kim, J.H. Choi, B.H. Choe, Failure analysis of a mast column. Eng. Fail. Anal. 10, 317–323 (2003)CrossRefGoogle Scholar
  3. 3.
    W.P. Sung, J.C.M. Kao, R. Chen, Failure analysis of Q345 steel structures on port cranes. Appl. Mech. Mater. 401–413, 844–847 (2013)Google Scholar
  4. 4.
    F. Frendo, Analysis of the catastrophic failure of a dockside crane jib. Eng. Fail. Anal. 31, 394–411 (2013)CrossRefGoogle Scholar
  5. 5.
    E.S. Kim, S.K. Choi, Failure analysis of connecting bolts in collapsed tower crane. Fatigue Fract. Eng. Mater. Struct 36, 228–241 (2012)CrossRefGoogle Scholar
  6. 6.
    J. Swaminathan, K. Guguloth, M. Gunjan, P.K. Roy, R.N. Ghosh, Eng. Fail. Anal. 15, 311–316 (2008)CrossRefGoogle Scholar
  7. 7.
    D. Ghosh, H. Roy, A.K. Shukla, Investigation of probable cause of a premature cracking of down comer nozzle of heat recovery steam generator (HRSG). J. Fail. Anal. Prev. 9(6), 517–521 (2009)CrossRefGoogle Scholar
  8. 8.
    D. Ghosh, H. Roy, S. Ray, A.K. Shukla, High temperature corrosion failure of a secondary superheater tube in thermal power plant boiler. High Temp. Mater. Process. 28(1–2), 109–114 (2011)Google Scholar
  9. 9.
    G. Das, S.G. Chowdhury, A.K. Ray, S. Das, D.K. Bhattacharya, Eng. Fail. Anal. 9, 563–570 (2002)CrossRefGoogle Scholar
  10. 10.
    H. Roy, D. Ghosh, A.C. Pankaj, A.K. Shukla, J. Basu, A case study on the premature failure of a cooling water pump shaft. Int. J. Manuf. Sci. Prod. 9(1–2), 99–106 (2011)Google Scholar
  11. 11.
    H. Roy, A. Saha, D. Ghosh, S. Roy, A.K. Shukla, Failure investigation of platen superheater outlet header. J. Mech. Behav. Mater. 19(6), 373–382 (2011)Google Scholar
  12. 12.
    D. Ghosh, S. Ray, H. Roy, Failure investigation of high temperature Stud. J. Fail. Anal. Prev. 14(1), 17–20 (2014)CrossRefGoogle Scholar
  13. 13.
    S.G. Chowdhury, P. Kumar, S.K. Das, D.K. Bhattacharyya, N. Parida, Failure analysis of high temperature studs. Eng. Fail. Anal. 8, 521–528 (2001)CrossRefGoogle Scholar
  14. 14.
    D. Ghosh, S. Ray, H. Roy, N. Mandal and A.K. Shukla, High temperature graphitization failure of primary superheater tube. High Temp. Mater. Process. doi: 10.1515/htmp-2014-0137
  15. 15.
    D. Ghosh, H. Roy, A. Mondal, failure investigation of condensate pump shaft. J. Fail. Anal. Prev. 14(4), 450–453 (2014)CrossRefGoogle Scholar
  16. 16.
    W. Muhannad, K.M. Deen, Failure analysis of water pump shaft. J. Fail. Anal. Prev. 10, 161–166 (2010)CrossRefGoogle Scholar
  17. 17.
    D. Ghosh, S. Ray, H. Roy and A.K. Shukla, Investigation into cause of high temperature failure of boiler superheater tube. High Temp. Mater. Process. doi: 10.1515/htmp-2014-0018
  18. 18.
    A.M. Lancha, M. Serrano, D. Gomez, Bricane. Eng. Fail. Anal. 8, 271291 (2001)CrossRefGoogle Scholar
  19. 19.
    H. Roy, P. Sharma, D. Ghosh and A.K. Shukla, Corrosion failure of in-service economizer tube. J. Fail. Anal. Prev. doi: 10.1007/s11668-014-9848-9
  20. 20.
    D. Ghosh, S. Ray, A. Mondal, H. Roy, Failure investigation of radiant platen superheater tube of thermal power plant boiler. High Temp. Mater. Process. doi: 10.1515/htmp-2013-0128.
  21. 21.
    ASM, ASM Handbook, vol. 1 (ASM, Metals Park, 1993)Google Scholar
  22. 22.
    ASTM standard E-8M, Standard Test Methods for Tension Testing of Metallic Materials, vol. 03.01, 2011Google Scholar
  23. 23.
    T.R. Chandrapatla, A.D. Belegundu, Introduction to Finite Elements in Engineering. Pearson Higher Ed USA, 2011Google Scholar

Copyright information

© ASM International 2015

Authors and Affiliations

  1. 1.NDT & Metallurgy GroupCSIR-Central Mechanical Engineering Research InstituteDurgapurIndia

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