Advanced SearchSearch Tips
The Structure Integrity Assessment of the Wall Thinned Elbow Considering In/Out-Plane Bending
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
The Structure Integrity Assessment of the Wall Thinned Elbow Considering In/Out-Plane Bending
Jang, Ungburm; Shin, Kyuin; Lee, Sungho; Kuan, Changhee;
  PDF(new window)
Local wall thinning elbow due to the water flow is one of the main degradation phenomenon in carbon steel pipe of plant system. The API579 code of FFS (fitness for service) used in the chemical plant gives a guideline to protect local wall thin problem in a straight pipe, but it does not include an elbow. In this study, the locally wall thinned elbow, which is considered an extrados or intrados wall thinned elbow, was carried out considering in-plane or out-plane bending using FEM (finite element method) analysis, and some of results were also compared with the experimental data. The results could give the structure integrity assessment to protect the local wall thinned elbow.
wall thinning;elbow;API579 code;FEM;structure integrity assessment;
 Cited by
Lee, S.H., Lee, Y.S. ( 2015). "Code and Standard for Thinned Pipe Structural Integrity Assessment", KSME 15RE-Th1P016, 2, pp. 86-86.

Park, J.H., Shin, K.I., Park, C.Y., and Lee, S.H. (2008). "Allowable local thickness of wall-thinned straight pipes in ASME Code Case N-597-2", International Journal of Pressure Vessels and Piping Vol.85, pp. 620-627. crossref(new window)

API579-1/ASME FFS-1 (2007). "Fitness-For-Service".

Dassult System (2010). ABAQUS/CAE V6.10.

Kim, J.W., Na, Y.S., Lee, S.H. (2006). "Evaluating on the Effects of Circumferential Thinning Angle and Bending Load on the Failure Pressure of Wall-Thinned Elbow through Burst Tests", Journal of the KOSOS, Vol 21, No. 6, pp. 14-19.

Kang, K.J. (2004). "Investigation of Pipe Rupture Accident in Mihama Unit 3, Japan", Nuclear Industry, Vol. 24, Np. 9, pp. 4-13.

Hong, K.M,, Kan, Y.J., Park, N.K., Yoon S.B., (2013), "Application of Laser Ultrasonic Technique for Nondestructive Evaluation of Wall Thinning in Pipe," Journal of the Korean Society for Nondestructive Testing, Vol. 33, No. 4, pp. 361-367. crossref(new window)

Nam, K.W., Ahn, S.H. ,Do, J.Y. (2010). "Analysis of Weld Beads for Wall Thinning Defects in the Weld Zone of the Boost Pump Recirculation Pipe for Power Plants and Evaluation of Their Integrity," Journal of Ocean Engineering and Technology, Vol. 24, No. 4, pp. 38-46.