The main purpose of this paper is to provide an applicable method to establish reliability factors for expanded tube-to-tubesheet joints. The paper also reports on the results of a preliminary study to validate experimentally the reliability efficiencies listed in Table A-2 of Appendix A of Section VIII, Division 1, of the Boiler and Pressure Vessel Code (ASME, 1986), and tightness of expanded tube-tubesheet joints. A comparison between the actual reliability factors fr determined from testing the damage strength of the joint and calculated according to Appendix A-4 of the ASME Code and those of Table A-2 is carried out. The results are discussed in light of the restrictions inherent in Table A-2. It is confirmed that some existing values of fr are conservative, while others are less so.

ASME Boiler and Pressure Vessel Code, 1986, Section VIII, Division 1, American Society of Mechanical Engineers, New York, NY.
Jawad, M. H., Clarkind, E. J., and Sukuesller, R. E., 1986, “Evaluation of Tube-to-Tubesheet Junction,” Design and Analysis of Plates and Shells, PVP Special Publication, Vol. 105, ASME, New York, NY, p. 77.
Sang, Z. F., Zhu, Y. Z., and Widera, G. E. O., 1991, “Fatigue Behavior of Tube-to-Tubesheet Expanded Joints,” ASME JOURNAL OF PRESSURE VESSEL TECHNOLOGY, 25th Anniversary Issue, pp. 341–344.
Sang, Z. F., Zhu, Y. Z., and Widera, G. E. O., 1992, “Reliability Factors of Tube-to-Tubesheet Joints,” Proceedings of 7th International Conference on Pressure Vessel Technology, Dusseldorf, Germany, Vol. 1, pp. 554–564.
Scoff, D. A., Wolgemuth, G. A., and Aikin, J. A., 1984, “Hydraulically Expanded Tube-to-Tubesheet Joints,” ASME JOURNAL OF PRESSURE VESSEL TECHNOLOGY, p. 104.
Yokell, S., 1982, “Heat Exchanger Tube-to-Tubesheet Connections,” Chemical Engineering, p. 78.
Yokell, S., 1984, “Extending the Life of Tubular Heat Exchangers,” Chemical Engineering, p. 74.
This content is only available via PDF.
You do not currently have access to this content.